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RN-FMJ or a similar weight. Sep 17, 2017 · Can you shoot bullets too fast to expand when they strike game? Some folks seem to think so. See screenshots, read the latest customer reviews, and compare ratings for Stopping Power Calculator. For some purposes, it is useful to know the energy the bullet will deliver to the target, while other applications, such as bullet stopping or killing power, may benefit from more detailed calculations. The notion of "stopping" in this sense isn't even really precisely stated. A. Does that mean that it is a better man stopper? Not necessarily, although it certainly has more power, dead is dead. Jul 11, 2019 · Stopping Power vs. It is best to use an additional formula to compare penetration. It’s probably closer than that because of the effect being shot sometimes has on people. 22LR is the most popular rimfire caliber. there are a few available as well as bullet molds. 308. Recoil Calculates the free recoil energy and velocity using firearm weight, charge weight, bullet weight and firearm velocity. Find more Physics widgets in Wolfram|Alpha. Bullet Trials Works Replica 500. Calculates based on bullet weight and Meplat or fronal area of the bullet. Calculation of the Relative Incapacitation. Feb 22, 2003 · THE STOPPING POWER OF DIFFERENT HANDGUN CARTRIDGES 2/22/2003 Posted on 02/22/2003 8:34:22 PM PST by 2nd_Amendment_Defender. SASS has a maximum velocity that is taken into account. This is a way of comparing a bullet's ability to "stop" game in a way that is easier to understand. The proprietary construction and massive hollow point provides two times the expansion featuring a 12-segment design. It then falls under the force of gravity and won't exceed terminal velocity. out what it all means and bullet weight is just part of that formula. From the most effective big-game stoppers ever conceived, to the farthest reaches of match-grade performance, Remington makes the centerfire rifle ammunition that delivers like no other. I also must have missed the part where the article concluded anything at all about stopping power…could you point that out? Seriously, you are talking about bullet performance. 38 Super) can be driven to a velocity that will make the PF. A bullet will destroy or damage any tissues which it penetrates, Bullets that might be considered to have stopping power for Use the calculator below to calculate the kinetic energy of a bullet. I do not know anyone willing to stand down range and catch lead from either. are two of the most popular short-action precision cartridges on the market, but which one is better for you? Check out the pros and cons of each here. 5 Oct 20, 2015 · Sectional Density – All Important And Almost Ignored Abe October 20, 2015 Shooting Basics 8 Comments Sectional density affects every area of a bullet’s performance, but too few people know about it. For example the 44 Magnum handgun, which most handgunners consider an acceptable hunting caliber with its standard 240 grain load at 1400 fps with a 0. You also can enter several bullet masses and draw the comparison graphs, just in case if you want to visualize different loads this way. 866 (Constant) × Velocity × (Mass of Bullet ÷ 7000) × √ Diameter If you are like me, your head is starting to hurt. At 50 grains the chamber will be filled to the top. . TKO is Taylor knockout factor, a number used to evaluate stopping Actually, no amount of knockdown power actually knocks anything down. CENTERFIRE RIFLE AMMUNITION. 5 Creedmoor and the . Sep 22, 2014 · Power factor is calculated by the formula: bullet weight times velocity divided by 1000. Sep 08, 2019 · This is a larger bullet with excellent range and stopping power. Many gun people will even use the term interchangeably with “stopping power. Bullets Too Fast for Bears. Using the online Ballistic Resources in conjunction with the Hornady’ Handbook of Cartridge Reloading offers users the most comprehensive examination of ammunition and ballistics ever offered. org that accurately details all aspects of the bullets trajectory the millisecond it leaves the guns barrel. This translates to a simple formula for shooting success: practice, practice, The following category of stopping power models would correspond to those designs that calculate how different bullets' dimensions and This reloading article provides a ballistic calculator that helps you compare different weight bullets, at any velocity, to see which one will hit harder. Bullet caliber sizes are very important because every bullet have different nature when a person fires a bullet then due to its recoil and pressure he will also miss his target but if the will using its own caliber like i am using 9mm then they won’t miss. Thus it incorporates two of the three factors I adopted for my Rifle Cartridge Killing Power Formula, and makes a nod in the direction of the third. Stopping-power and range tables can be calculated for electrons in any user-specified material and for protons and helium ions in 74 materials. Again from the same article: Nov 13, 2017 · 6. It is not Jul 06, 2016 · Dangerous game demands specialized cartridges with lots of stopping power and that are capable of penetrating thick hides. A higher muzzle energy typically means a higher stopping power, but that’s not the only factor. 5-1. The thread on best bear defense firearms reminded me to think of this- Comparing 30-06 to 454 Casull etc. 38" meplat, pushed something around 1350-1400fps, made a permanent wound about 1. StoppingPower. lbs. May 01, 2016 · This connection is made all across the gun world, from gun reviews noting that a bigger round rings steel more loudly than a smaller one, to the Taylor Knock-Out Index which combines momentum with the diameter of the bullet in an attempt to quantify stopping power against big game. ” But is muzzle energy important? Dec 22, 2012 · where: TSP = Thorniley Stopping Power v = velocity of the bullet in feet per second m = mass of the bullet in grains sqrt = square-root function d = diameter of the bullet in inches. The Bullet 350 ES rear disc retails at Rs 1. Momentum is expressed [tex] p = mv [/tex] While both of these quanities are functions of the mass and velocity they have different meanings and differnt uses. Thus, the Power Factor formula leans heavily towards bullet weight. According to the recoil calculator that I found, felt recoil would be The application calculates muzzle energy, TKO, IPSC factor and sectional density of a bullet. Momentum is the "pushing" power of your bullet, higher is better. Combining complete onsite environmental measurements with the precise trajectory solutions of the integrated Hornady 4DOF ® ballistics solver, this rugged all-in-one handheld unit delivers the convenience you want and the accuracy you need for long-range success under any conditions. Because the formula for calculating muzzle energy requires that bullet speed (by far the largest number in the mix) be squared, the power factor is distorted in favor of a smaller, lighter, and faster projectile. Oct 24, 2019 · If you also enter bullet form, the Hatcher Relative Stopping Power value is also available (with the expanded value for hollow/soft point). 3 Stopping Power” by John Taylor to be text book. 429 diameter bullet gets a Taylor KO of 20 (try that above). 25 to 3. 40 vs . In this formula M represents the mass of the bullet, and V represents the velocity of the bullet. No single factor can measure "stopping power". You can calculate variables in the Foot Pound formula with this page. " A comprehensive collection of interactive, online ballistics calculators! Exterior Ballistics, Recoil Calculator, Wound Channel Calculator, Stopping Power What is not readily appreciated is the penetration of bullets in this chart. Get the Handbook Jul 10, 2014 c1admin Calculator, Utility ammo power calculator, ammunition power calculator, ballistic app, ballistic calculator, ballistic coefficient app, ballistics, bullet energy calculator, bullet form factor, bullet momentum calculator, bullet power factor calculator, celeritas one, drag functions, gun recoil, hatcher relative stopping Power Factor Calculator/Graph Builder. if you use the foot/lbs energy calculator (same site) you'll see that that speed and weight gives you 825 foot/lbs of energy just a tad shy of the 900 ft/lbs required (at least in my book) for a clean kill of a deer. Dec 01, 2019 · This is a demonstration of the Effective Firearms’ Stopping Power Calculator For Hunters phone app, which provides up to 6 indicators of bullet performance. Velocity and bullet construction are the predictors. (As an aside, penetration actually tends to decrease with increases in velocity above about 2000 fps if all other factors are the same). The rimfire's primer is built into the rim while the centerfire cartridge has the primer in the center. Sep 18, 2018 · So if you compare the actual 9mm vs 40 S&W vs 45 ACP “stopping power” (incapacitation) numbers, it boils down to a measly 4%. ” Aug 27, 2009 · although these figures are relatively close, muzzle energy alone does not give an accurate portrayal of real world stopping power. (Cartridge, bullet weight in grains, muzzle velocity in feet per second - killing power score at 100 yards. Muzzle Energy will be rounded to the nearest whole number. Explanation of terms Download this app from Microsoft Store for Windows 10 Mobile, Windows Phone 8. Many manufacturer provided velocities may or may not be over/under stated, different based on your gun and your shooting conditions. I was in bear camp where our Canadian guide, a capital fellow, was doing his best to make sure his clients were properly prepared for their hunts. Barnes, the leader in bullet innovation offers hunters the ultimate in accuracy, terminal performance and handloaded precision in a factory loaded round. Dual Bond is engineered using state-of-the-art "bullet within a bullet" technology. But for those who feel physics of Goddard to be a better choice of selection should read the FBI report more closely. >> Relative Penetration Calculator. The ineffective stopping attributed to overpenetration of handgun bullets (to the Regrettably, this formula is as misleading as any kinetic energy figures or STOPPING POWER. The best stopping power is a complex mix of many different factors, including how Developed in the 1950s, this round combines high velocity with large bullet size. 73 lakh Base-spec Bullet 350 will set you back by Rs 1. We use this nifty bullet energy calculator when we chronograph projectiles. All hunting loads and bullets are developed at the Sako ballistics laboratory. Variables: Mass of bullet Mass of Object Air Resistance Velocity Force (F=MA) Bullet Weight Diameter of bullet (If that has any effect or usefulness) The databases ESTAR, PSTAR, and ASTAR calculate stopping-power and range tables for electrons, protons, or helium ions, according to methods described in ICRU Reports 37 and 49. You may add items to the list on the right in order to create a bar graph comparing the different items. G. My conclusion is that Black Powder and Pyrodex are about the same in power in equal volume, but the compressibility of Pyrodex allows for more powder to be put into a limited space. Jun 26, 2018 · Whether it is a 115-grain + P at significant velocity or a 147-grain bullet at lower speeds, a quality and proven 9 mm duty round is out there. This can easily be done with the help of BlueStacks or Andy OS Android emulator. The higher the number the better. 75+ in diameter all the way through the animal. Stopping Power 12 Gauge vs. defensive ammo light bullet vs heavy, fast light bullet or heavy bullet from a 9mm, fast light grain bullet vs. We select bullet shape, diameter and weight delivered at a speed Thorniley Stopping Power = 2. Cartridge and bullet design give it a lot of versatility, and it is also readily available. The Taylor KO factor multiplies bullet weight (measured in grains) by muzzle velocity (measured in feet per second) by bullet diameter (measured in inches) and then divides the product by 7,000, converting the value from grains to pounds and giving a numerical value from 0 to ~150 for normal hunting cartridges. . Recoil Energy, Impulse and Velocity Calculator Jan 25, 2018 · You can now play Stopping Power Calculator for PC on a desktop/laptop running Windows XP, Windows 7, Windows 8, Windows 8. 75-2" permanent wound cavity in the first 6" of penetration but which tapered down Barnes® VOR-TX® is precision ammunition loaded with the deadliest bullets on the planet. 45 ACP, . ii. Both seem to be at the opposite ends of what makes up good stopping power, small and fast vs big and slow. There is plenty of criticism out there that even the 9mm is underpowered and lacks stopping power. Oct 12, 2019 · Basic Bullet Guide: Sizes, Calibers, and Types – Pew Pew Tactical – Jan 31, 2016. Index . Any bullet weight suitable for the commonly-used calibers (. Taylor called it a "power yardstick" for African rifles. 308 Win. Dec 28, 2012 · It uses the bullet mass, velocity, frontal area of the bullet and also a 'form factor' which depends on the type of bullet. 45 ACP HST +P bullet, which dropped a charging hog instantly. III. We thought you might enjoy it as well. Most of them used a 160 gr. Pirate Pistol Put a bunch of hunters together at a favourite watering hole, or around a hunting campfire, and at some point, talk will almost certainly turn to stopping power, killing power, and matters relating to the way a bullet performs on an animal that is on the receiving end. Dec 02, 2012 · The "L" formula apparently multiplies kinetic energy (in ft. I have never liked using muzzle energy figures alone as the sole source of information when comparing cartridge effectiveness or determining suitability for hunting game. What I do know is that heavier bullets mean greater penetration, and penetration is crucial to stopping an attack. Sniper Rifles Military Weapons, Weapons Guns, Guns And Ammo, Revolver, Fire . “Stopping power” has plenty more factors than simple kinetic energy. The app provides the momentum, muzzle/kinetic NEW! Kestrel ® 5700 Ballistics Weather Meter with Hornady ® 4DOF ®. They are You can also use the calculator in your browser. 30-30 has a Taylor KO number of 17 given the heavier bullet and its larger diameter. Wagner of the Effective Firearms Stopping Power Calculator — Smartphone determine what factors influence human incapacitation by handgun bullets. If you also enter bullet form, the Hatcher Relative Stopping Power value is also available (with the expanded value for hollow/soft point). A comprehensive collection of interactive, online ballistics calculators! Exterior Ballistics, Recoil Calculator, Wound Channel Calculator, Stopping Power Calculators (mutiple), Round Ball Weight Calculator, Powder Calculators, and more! A one-stop resource for your technical ballistic data needs. But I will tell you about the factors that determine stopping power. Output shows whether or not the division is made (green/red) and by how much in percent. 5 grams and leaves the muzzle at about 800 mph for muzzle energy of 467 joules, or about twice as much as a well hit hockey puck. 11 Jul 2019 Plus, check out our free & easy to use muzzle energy calculator. Muzzle energy is simply the energy of a projectile measured at the moment it exits the muzzle of a gun, which is when it is going fastest. net also provides excellent information on self defense, concealed carry, firearms performance, law enforcement challenges, and more. Mar 1, 2019 - Explore tkeserich's board "Stopping Power. Jan 16, 2013 · So back to the question at hand about determining stopping power. However, sometimes the statistics don’t always translate into real-world actuality. But, heavier bullets have an advantage. heavy slower bullet, heavier bullet vs lighter bullet 9mm, heavy slow bullet or light fast bullet, light ammo vs heavey, light and fast or heavy and slow for self defense ammo, light fast vs heavy slow bullet, light versus heavy 9mm A Revolutionary 12-Segment Bullet Design Built for Maximum Stopping Power Winchester Dual Bond is engineered using state-of-the-art "bullet within a bullet" technology. Sep 08, 2019 · As we mentioned in the previous section, there is a lot that goes into stopping power. That comes from a combination of bullet shape, construction, and weight along with velocity. How thick does it need to be for a specific application? It depends because the product you need depends on the weapon power being resisted, material type and level or grade but it can range anywhere from 0. Like I said, I’d only give larger bullets a TINY edge. The bullet loses energy after it leaves the muzzle and its velocity bleeds off due to the aerodyna For example, a 14. This was the combination that gave the . Using muzzle velocity The effect a bullet has upon impact may be defined in several ways, depending on how the information is used. John Talyor was an extremely experienced African hunter. So which are the best dangerous game cartridges of all time? Dangerous game—those two words pique my curiosity like a kitten at the sight of a laser-pointer. Bullet Feeders and Accessories; Power Factor Calculator. 9 gram bullet at 219 meters per second yields a power factor of 165,214. The gases from the blast could blow the screen Jun 20, 2017 · The first AR-15s and M-16s had a 1:14 twist, which provided the original 55-grain bullet, the XM193, with good accuracy and effective stopping power. 38 Special or . 45: Which Chambering Has More Stopping Power? Modern bullet technology has improved many calibers. 223 its reputation for “exploding. 1, Windows 10 and MacOS/OS X. It depends on the materials of both the projectile and the target, the biological structure of the target, and a host of other of things. Oct 24, 2019 · Enter the caliber and you can also display the Taylor Knock Out Factor (TKOF) and the Thorniley Stopping Power indices. Precision-crafted of the finest components – perfected for your favorite pursuits. (Apparently great minds think alike!) Nov 03, 2019 · This is a demonstration of the Effective Firearms’ Stopping Power Calculator phone app, which provides up to 7 indicators of bullet performance. ). Unlike the Taylor KO factor and Thorniley Stopping Power formula which only consider the diameter of the bullet in their calculations, the Hatcher formula uses the bullet cross-sectional area in its calculation. I am talking about STOPPING POWER. To get a better idea of real world stopping power try the thornily stopping power calculator. The Ultimate All-In-One Power Rating Utility and Ballistic Calculator! Commercial-grade ballistic calculator A powerful, commercial-grade ballistics calculator enables any ammo's power rating to be evaluated at any distance. I have research into stopping power fomulas. energy figures, etc. It is easy to find a round that will meet the needs of your patrol division and tactical team. With firearms, it's often very difficult to hold the muzzle of the gun next to the start screen of a chronograph. Get the free "Particle stopping power calculator " widget for your website, blog, Wordpress, Blogger, or iGoogle. Momentum and "Stopping Power" There is another branch of armchair ballistics which favors the use of momentum as a raw measure of "stopping power". 44 Magnum bullet moving at 1,000 fps less than the . You put in bullet weight (in grains) and speed ( in feet per second ) and click for Foot Pounds of Energy delivered at muzzle. The best three formulas are in my opinion Hatchers RSP Taylor's TKO and Thorniley used on this site. 23 Jul 2018 “knockdown power” ~ momentum (mv), of which a bullet has very little . The Calculator. Without actually doing the research, I am confident that more than 95% of all bad guys have bone. The list that follows is intended to suggest the relative killing power of various hunting cartridges and loads at 100 yards when those cartridges are used appropriately. My college algebra class was a long time ago, so I am so glad that there is the Effective Firearms Stopping Power Calculator. 223 Remington (60 grain at 3000 fps) - 6. Sometimes the heavier bullet is so much slower, it's not more, but less. A common distinction is between "Minor" and "Major" power factor, and it determines the score value of peripheral hits. 2. Jun 27, 2017 · Bullet resistant glass is actually layered material that offers the visibility of glass with enough strength to stop a bullet. Taylor KO Factor, a method for comparing the relative stopping power of big game Factor formula is strongly weighted towards heavy, large diameter bullets. I need a function cause variables will be changing nothing is a set one. Enter a muzzle velocity (feet per second) and bullet weight (grains) and it can display the bullet momentum and muzzle (kinetic) energy. $\begingroup$ Stopping power is a complex issue and not something you can just calculate from ballistic first principles. Power factor requirements are determined by which division one competes in, and might be caliber specific. Power Factor Calculator Power Factors Required By Major Shooting Organizations . The 6. Effect of Accuracy and Aim Point on Stopping Power . Calculator that builds a graph by calculated bullet power factor using the bullet mass and the velocity. Bullet Kinetic Energy Calculator. A bullet blasting all the way through a target body vs. In cases with a reasonably high launch angle, drag will dominate, so the bullet will land with a terminal velocity defined by its shape alone, because the bullet will have lost nearly all its horizontal speed due to drag. Muzzle Energy is useful in comparing cartridges, calculating recoil, and stopping power. RIFLES over 2850fps back up so bullet speed is BELOW 2850fps at target. Use the calculator below to calculate the kinetic energy of a bullet. Muzzle energy is often used to rate the lethality of certain loads. Power Factor. Kinetic Energy where RSP = Relative Stopping Power Index, M = Momentum of the bullet in foot pounds, A = Area of the bullet in square inches, F = Form factor derived from his observations with some additions for later bullet types. See: Man survives 9mm head shot – Firearm Blog. "Bullet" is the weight (in grains) and StoppingPower. Ballistic Resources. “The Hatcher Formula is an attempt to mathematically evaluate the approximate effectiveness of pistol ammunition at incapacitating a person. net is the definitive source for ammunition stopping power or performance information. from and determine thickness needed with energy calculator and key below. Oct 31, 2014 · It excluded shots that hit bone. Jul 21, 2017 · They searched for a larger caliber, which is the easiest way to increase stopping power. Comparison Ballistics By the Inch (Velocities of All Handgun Ammo) Cruffler's Online Muzzle Energy Calculator Ammo Stopping Power/Other Specs for all calibers 30 Mar 2018 This guide explains what bullet weight is and why it matters. 40 S&W, 9 mm, . 1, Windows Phone 8. If you are expecting me to tell you which brand and which bullet caliber and type to use for the best or most reliable stopping power, you are going to be disappointed. Jul 19, 2017 · “Stopping power” is an archaic concept that doesn’t conform to the real-world physics of shooting someone. In order to determine the kinetic energy, you must know the velocity of the bullet and the weight of the bullet in grains. At the same time a 240 grain bullet . Muzzle energy is the amount of energy a bullet carries right out of the barrel. A review by Scott W. You can see if heavier bullets for game really have more knock-down power. 28 lakh All prices ex-showroom Delhi The Bullet A Revolutionary 12-Segment Bullet Design Built for Maximum Stopping Power Winchester Dual Bond is engineered using state-of-the-art "bullet within a bullet" technology. Stopping power is the ability of a bullet to penetrate material or an object. a bullet stopping in a body, are two very different critters. The truth is neither spear nor bullet energy works the way we think. Power Factor Calculates the power factor and checks divisions for IDPA, IPSC, TSA, USPSA and SASS. Sep 16, 2017 · Yes, the power of a bullets is measured by bullet muzzle (kinetic) energy which equals the mass of the bullet times 1/2 the muzzle velocity squared. 12 Oct 2019 Hatcher came to realize, however, that this formula was flawed, as the factor Table 3. Divisions for TSA, IDPA, IPSC, USPSA and SASS are displayed. Australia & New Zealand will offer limited quantities of Red & Green EFI 500cc models. Cost: Especially when purchased in bulk, 9mm ammunition can be significantly less expensive. Chuck Hawks explains The Rifle Cartridge Killing Power Formula and These factors are velocity, energy, bullet weight, sectional density (SD) and bullet 1 May 2016 Momentum = Stopping Power combines momentum with the diameter of the bullet in an attempt to quantify stopping power against big game. Especially when it comes to discussing handgun rounds and self-defense. Which one do you think has better stopping power. 14 Relative stopping power (RSP) of various bullets. hear are my conclusions. 32 lakh Bullet 500 rear disc is priced at Rs 1. Formula. 308 vs. Sep 03, 2015 · A 215gr WFN bullet with a . An evaluation of the effectiveness B. A great tool for comparing the potential penetration of one bullet to another. Dec 09, 2003 · Kinetic Energy is expressed as [tex] KE = \frac 1 2 mv^2 [/tex] note that the velocity is squared. 5 Creedmoor Ammunition. I have always liked the bigbore guns in both handgun and rifles. As soon as the bullet hit anything denser than air, it immediately started to tumble and fragment. Handgun Calibers Comparison. Inspired by Johnny Brittain’s champion Bullet and the Royal Enfield Factory Team’s tremendous success at the International Six Days’ Trials, the Bullet Trials Works Replica is a homage to a motorcycling legend. Considering all of that, though, kinetic energy can be a good indicator of the potential for cavitation when coupled with the proper bullet. The weight and velocity of a bullet can theoretically stay the same, but if diameter is broadened then relative stopping power is quantifiably more effective. The Effective Firearms Guide to Stopping Power calculates up to six (6) indices of bullet performance. Thornily Relative Stopping Power Calculator; Calculates based on bullet weight and Meplat or fronal area of the bullet" Thornily Stopping Power Calculator Jan 01, 2003 · Although kinetic energy figures are handy keys, they are not a valid reflection of stopping power. The "Taylor Knock Out Index" was developed by John Taylor. Oct 06, 2011 · The 10mm is a high velocity round that fires a 40 cal bullet at very high speeds. Gun publications and avid shooters can run on endlessly about the energy of certain cartridges and even specific brands of cartridges. The app provides the momentum, muzzle The term handgun “stopping power” generally relates various opinions about the ability of handguns to create ballistic wounds sufficient to incapacitate a target. Rimfires are extremely cheap (few cents each) and the. Note the size of this Federal 230-grain, . Jan 23, 2013 · Taking it a step up, the 9mm bullet weighs about 7. >> Thornily Relative Stopping Power Chuck Hawks shares important information about handgun stopping power in this handy condensed version of his popular chart. 30-06 New Topic Reply to Topic If you consider the difficulty of doing all of this and putting a single bullet on a fast Jun 05, 2014 · When it comes to penetration in any type of material, energy is not a predictor. Mar 21, 2017 · 9mm vs . I presume the 1425 fps is at the muzzle. It’s a great medium to large game rifle and can be used for just about any large game animal in the world, barring a few. 52. A heavy outer jacket is mechanically bonded to the inner bullet, protecting it during deep driving penetration, which provides maximum trauma. Muzzle Energy. Please share, like, and tweet this page and others to show your support. Analysis of the effect of a bullet, size of the wound or damage to ballistic media is what really matters. Quoting energy works well for comparing different loads, but it does not mean anything. The Knock Down Factor – How To Calculate the Stopping Power of Your Gun Enter the weight of your bullet and the velocity of the round below to calculate the energy and power factor of the round. " As the name implies, we are looking for the ONE SHOT stop. Thornily Relative Stopping Power Calculator; Calculates based on bullet weight and Meplat or fronal area of the bullet" Thornily Stopping Power Calculator Bullet energy, also known as muzzle energy, is a measure of energy a bullet has as it leaves a gun. 1. Students of physics will note that because the IDPA power factor formula calls for a simple product of mass and velocity ( P = M x V ), the IDPA power factor is a representation of momentum, rather than kinetic energy ( E = M x V 2 / 2 ). Lighter bullets must travel faster than heavier bullets to reach the same power factor and therefore require self defense – you want to stop (in this case, kill) your living target. Jan 03, 2013 · I am trying to calculate the impact force or stopping power (not sure what to call it) or a bullet on an object. To me, the word “caliber” as it pertains to firearms is a label — not just a measurement of a bullet or a bore’s dimensions — but a way to identify the intrinsic qualities of a cartridge that makes it unique. Calculate Power Factor from muzzle velocity, bullet diameter and bullet weight. It’s one of many factors that effect both stopping power and recoil. Another Beartooth Exlusive found only here! Generates the relative penetration index for any given bullet. The pyrodex will compress enough to allow the seating of the ball. Thanks for using the external ballistic calculator from GunData. His formula is supposed to indicate how much bullet weight/caliber/velocity and thus energy is Energy on Target Terminal ballistics is in many cases, the least considered The bullet's design, as well as its impact velocity, plays a huge role in how Severely interrupting or stopping the flow of oxygenated blood to the brain by Gain a deep knowledge of ballistic science and access our improved ballistic calculator. A higher muzzle energy typically means a higher stopping power, but that's not the only factor. General Julian Hatcher, a noted forensic pathologist, in the early 1900’s developed a good formula to determine the theoretical stopping power of a firearm cartridge. It's often assumed that heavier bullets produce more recoil than lighter bullets. One of the complaints was the lack of stopping power. It is not surface contact of a projectile one should be calculating but rather 12” deep into a specific target. Dec 10, 2009 · "Follow-up shots" have nothing to do with "one shot stopping power. The Proprietary construction and massive hollow point provides two times the expansion featuring a 12-segment design. Enter the first two variables, then press calculate. And while the kinetic energy carried by a round is in no way the end all method of determining stopping power, it does influence the amount of damage that a bullet will cause. ) x sectional density x bullet diameter (in inches). 7. A ~200gr XTP (not 100% sure of the weight of the top of my head) pushed at a similar velocity made a 1. While all seven values are available via the Internet, obtaining them would require visiting multiple web sites, which can be awkward while standing in a store evaluating ammunition options on the shelf. The Effective Firearms Stopping Power Calculator can assist you in selecting the ammo that will give you the most "stopping power. We assume the projectile error in calculation; most do not HAVE this stopping power. There are a plethora of options when it comes to the . F. His formula was based on killing This can also be know as a bullet energy calculator. while the 45 fires a big 45 caliber bullet at a slow speed but still hits very hard. Click Here to open in small window. bullet stopping power calculator