The Action Pistol’s 205-grain bullet produced a noticeably softer recoil impulse. As long as you're not comparing bullets of drastic differences in design and construction, such as jacketed versus frangible, or working with vastly different COLs, this rule holds. As bullet grain affects the speed of the round going down the barrel (heavier bullets are harder to move) the designed rifling can have less of an effect on a bullet moving too fast if it is too light. Instead, we have to understand the relationship between bullet weight and recoil. Again, you need a round powerful enough to penetrate the vital organs of your target. 165-grain vs 180-grain .40 S&W ammo? For the average shooter, reading the description on a box of ammo can make it feel like you’re deciphering a secret message. For most plinking at the range, not a whole lot. This isn't necessarily the case because there is another variable in play. By the time that happens, a 230 grain bullet at 830 fps is nearly 25 yards downrange. Recoil energy (free recoil) greater than 20 foot-pounds force (27 J) will cause most shooters to develop a serious flinch, and the recoil energy of an 8-pound (3.6 kg) rifle firing a 165-grain (10.7 g) 30-06 bullet at 2,900 feet per second (880 m/s) is 20.1 foot-pounds force (27.3 J). The shape of the stock/grip affects muzzle rise. If those are still too much, there are also some very easy shooting 32 H&R loads you might want to look at. One possible confound to comparing bullets of different weights is that they might differ in their construction (lead hardness, jacket hardness and thickness) which could affect their friction coefficient, which could affect their velocity which would affect the calculations. Units are not important you can ignore them. When Bullet Tooth Tony fires that massive handgun, his hands hardly move. Velocity is one aspect where the 458 SOCOM has a weaker performance per round. At 500 yards the lighter bullet shoots 3-inches flatter, maybe the difference between hit and miss. With 125 grain, I don't feel hardly any recoil … The .45 ACP TRP firing a 230-grain bullet at 880 feet per second generates 5.43 foot-pounds of energy. When you see “grain” (sometimes abbreviated as “gr.” or “grs.”) preceded by a number on a box of ammo, it is referencing the weight of the bullet. The snappier recoil that people experience with lighter bullets likely results from their faster acceleration. The .300 Ultra Mag can fire the same weight bullet approximately 200-300fps faster than the .300 Win Mag. 280 AI, 150-grain bullet, 3,100 fps: 26.86 f-p recoil energy, 15.7 fps recoil velocity. Lighter bullets need more velocity to reach the 165 power factor, and that requires more gunpowder (Table 3). Never-the-less, the table below should give a reasonably accurate comparison of the recoil of most popular rifle cartridges. Some guns just don’t like certain cartridges and you want to know what your gun likes before you need to use it. for my 45 ACP, 240-250 for my .44s, 158 gr. Many shooters say that the light, fast bullet seems “snappier” while the heavy bullet’s recoil is more of a flat push. These are the weights most commonly offered by manufacturers, though you may occasionally come across a less common weight that is usually made for specialty purposes. Joined: Mar 6, 2009 Location: 42. Bullet weight vs. Recoil Thread starter TonyDedo; Start date Feb 2, 2014; TonyDedo. The longer bullet will take up more case and raise the chamber pressure. Accuracy- In general, you may find that your gun performs with better accuracy with a certain bullet weight. Which one is better? Created around a 250 grain bullet, the standard 450 Hornady ammunition can knock a round at 2,200 FPS despite its much lesser size. Again, you need a round powerful enough to penetrate the vital organs of your target. 3.38 / 3.18 = 1.0628 The 115 grain bullet produces 6.3% more recoil than the 147 grain bullet when pushed to the same power factor. I really don’t remember. For all things ballistics, reloading and ammunition related, turn to. Ultimately, find a cartridge that performs well under testing or real world applications and most importantly, one that functions well in your gun. Hence, there is no obvious advantage of one bullet weight over another. Considerations that need to be taken include the size and anatomy of the game, the terrain, the distance at which you are shooting, and the laws and regulations where you are hunting. Local gun store had some 165 in stock so I bought a couple of boxes of Blazer Brass. Power factor is calculated by the formula: bullet weight times velocity divided by 1000. This isn’t the weight of the entire round of ammunition, but just the projectile that leaves the barrel. Specifically, i show how the Wii remote controller is positioned using the wrj4P5 drivers. When loaded with a 108-grain bullet, the projectile breaks at a muzzle velocity of 2700fps. There are specialty rounds available specifically for. Theoretically, cartridges with the same power factor have the same recoil, though this isn’t always true and we need to look at the other factors involved. We're taking a look at what the Army's Elite Units are using for service rifles and what the future of SOCOM sniping looks like. Since the point is to stop a threat, you want ammo that travels deep enough into the target to hit vital organs while expanding enough to not leave the body and cause collateral damage. If you have a gun that has trouble feeding what you’re shooting, changing the weight of the bullet in your ammunition can change the profile, and with it, help your gun work better. This begs the question from many shooters: When reloading for competition, which bullet weight gives you the edge? Many shooters claim that the recoil of light and heavy bullets feels different when loaded to the same power factor. Go shopping, shooting, and experiment! Competition- Depending on what competition venue and division you are competing in, power factor will probably be important to you and you will need to be sure your ammo is meeting the set requirements. Thus with a 168 Grain .308 Winchester cartridge, the bullet will weigh 10.88 grams. Well, the weight of the bullet affects its performance once fired, including effects on recoil and accuracy. bullets. It is calculated by multiplying the bullet weight by the velocity, then dividing by 1,000. We ping steel with a .300 WinMag at over a mile. The first section is an explanation of what bullet weight is. There are all sorts of slang terms for a round of ammunition. for my 38/357 Mag., etc.). Typically, recoil is less snappy with heavier bullets. Not even close. Feb 2, 2014 #1/10 After 5 or so years of using moly coated lead 230 RN bullets in my XD45, I've finally exhausted my supply of components and I'm looking to restock. But they all typically have about 200 to 240 ft lbs of energy --- which by Newtons Law means that the energy out the end of the barrel is offset in the recoil. You may find a lighter bullet has performed consistently better than a heavy bullet in a ballistic testing (or vice versa); because of all the factors involved, relying solely on bullet weight is unrealistic. The grain of a bullet is simply its weight. Let us also clarify that we are discussing the merits of heavier or lighter grain weights for the same caliber, such as 115 gr vs 147 gr 9mm. This may be a silly question but i found the recoil while shooting at the range 115 grain had more recoil than a 124 grain. Selecting a caliber that is adequate for the game and conditions you are hunting in will be more important than any particular bullet weight. To learn more about power factor. Too bad. Many organized shooting sports require ammunition to achieve a minimum power level to qualify and be scored in a specific division. This is the same for 115 grain, 124 grain, and 147 grain bullet. Light bullets tend to have a quicker "snappy" feel while the heavy bullets tend to have a slower "pushy" feel. Some guns, pistol and rifle, just “like” certain bullet weights or even certain specific ammunition types, better than others. One weight might have a more rounded tip while another is more squared off and blunt. Third, there is the issue of recoil impulse. 7mm Rem. Some of the coolest new optics introduced this year range from Aimpoint's new COMPM5B red dot... James Tarr runs through the 3-Second Headshot drill. |
Recoil is generated as force is applied. While this isn’t always dependent on weight, it’s one factor that can affect the shape – also known as the profile – of the bullet. Shooters who just want to plink at the range can usually find an affordable round that consistently makes both their gun and wallet happy. Your barrel length and twist rate will play a part in your ammo selection, with heavier bullets requiring a faster twist rate. I'm assuming either bullet will bring down any whitetail at reasonable ranges, and I'm inclined to go with the 120 grain, guessing it will be lower recoil than the 140 grain. Velocity, energy, and even the burn rate of the specific powder used can contribute to differences in felt recoil. are perfect. Does grain weight actually matter? If you’re choosing a self defense round, bullet weight should not be your initial concern. Something else to consider, though, is wind deflection. Hello, I just bought a rifle chambered in .375 HH and have this question regarding recoil. Give a Gift
It depends on the shooter. This value was then used to calculate recoil force. Also, please understand that there are dozens of loads for any given bullet weight in any cartridge that will produce the same velocity, but a different amount of recoil. With this, you can take out any wild animal, such as deer, beyond 220 yards using your AR-15 rifle. Because heavy bullets generally travel at a slower velocity and don’t rotate as fast, they can be harder to stabilize than a lighter, faster moving bullet. Would someone enlighten me on felt recoil/vs grain of bullet. Chamber pressure is going to be higher. For the price of a few boxes of ammunition, you can make your gun shoot to its sights, change how its recoil feels in your hands, and even make it more accurate and reliable. Do the bullets produce the same amount of recoil at the same power factor? This means a faster recoil impulse. One last time, remember that the grain just measures the mass of the projectile, not all the cartridges. Lbs.) make perfect sense for plinking. The pistol was virtually recoiling too much and hurting my hand. 300 Ultra Mag vs 300 Win Mag. Apparently recoil hasn’t made its way to Hollywood and that part of the West Coast yet. It’s not unusual to be limited to doing no more than hammering the rear sight to one side or the other to shift your hits left or right. The initial inclination is to say that the recoil will be more with the heavier bullet because for every action there is an equal and opposite reaction. No. Power Factor & Recoil: Which Bullet Weight Gives You the Edge? You see, it matters how much gunpowder is required to achieve the necessary velocity, because gunpowder weight affects recoil force. I personally found for myself that running any bullet faster than 1,200fps had pretty unpleasant recoil and long shot recovery times. One is a Steyr SBS Forester and the other is a Sako AV. To learn more about power factor, check out this post. For whatever reason, I’ve only shot 180 grain in this caliber. Features such as the no-clog hollow point bullet and a design and powder load specifically for use in a full size handgun contributed to the decision as well as consistent performance in testing. A heavier, slower bullet may have more of a “roll” or “push” by contrast. Power factor is a measurement of the momentum of the bullet and is used primarily in competition settings to determine perceived recoil. Page 1 of 2 1 2 Next > All Reloader Gear. Joyce W. Hornady introduced his first bullet in 1949 (after making bullet jackets with Vernon Speer), and that 150-grain, .308-inch-caliber spire-point developed his reputation. How the shooter feels the recoil, though, is totally subjective, so even though a heavier round may technically generate recoil, it’s still a matter of how you personally perceive the blast. With all these variables, it’s near impossible to definitively say which bullet weight has the most effect on recoil. The other characteristic you might notice as you shoot groups for elevation is that you’re getting better or worse groups with different bullet weights, and your gun might be running more or less reliably between ammo types. Two inches, single action, 25 yards, with Critical Defense 110-grain FTX bullets. They typically shoot whatever is cheapest and most available without any problems. Thread Status: Not open for further replies. The exact Force is difficult to calculate, but generally Force = Mass * acceleration. Do these different bullet weights achieve the same power factor when loaded with the same gunpowder charge weight? I would go 300 win mag, because I plain like 30 cals. There are people who swear by a heavier bullet weight in their self defense rounds and it is true that certain brands and product lines have better track records than others. If you are new to shooting though, it may not be a familiar term, so what is bullet grain? This means that the lighter bullet will spend less time in the barrel than the slower moving heavy bullet, causing a difference in perceived recoil. So the area in inches is (3.14159*(.355^2))/4 = 0.099 in^2. a 5/8 oz slug has less recoil than a 7/8 oz slug fired from my 20 ga shotgun. The Federal Premium Low Recoil 85 grain Hydra Shoes make a very nice carry load. For example, in some divisions of USPSA competition, in order for pistol ammunition to qualify for Major, it must be at least .40 caliber and achieve a 165 power factor. Okay, so the first part: what you gain and lose with lighter-for-caliber bullets compared to heavy-for-caliber bullets. In the shooting sports we call that reaction recoil or "kick." Using heavier bullets solves the problem, but I have also found that there is a limit to the advantage of a heavier bullet. Although that tells you the magnitude of the recoil it does not really fully describe the recoil impulse. The second section of this article contains tips for using bullet weight to your advantage and how to adjust bullet weights to maximize your potential ability to remain on target. 9mm bullet is 0.355" diameter. Other factors that can alter perceived recoil include barrel length, gun weight and design, and the shooter’s grip and stance. A common distinction is between "Minor" and "Major" power factor, and it determines the score value of peripheral hits. The science behind long range rifle shooting is vast and confusing, but there are many precision shooters out there who can offer guidance and education on the topic. 147's loaded with fast burning powders have less recoil than 124's loaded with slow burning powders. Within each caliber, you will notice that there are certain bullet weights you see more often than others. This means you have the option to read your magazine on most popular phones and tablets. Increase the gun weight by, say, 25% and the recoil goes down by 25%. Considerations that need to be taken include the size and anatomy of the game, the terrain, the distance at which you are shooting, and the laws and regulations where you are hunting. The following test will determine the optimal bullet weight(s) with the lowest possible recoil while still achieving a desired power factor. Even if you’re satisfied with what you’re getting out of your current ammo of choice, it can be worth trying others from time to time to see if you can do better with a different choice. This is known as power factor. There are people who swear by a heavier bullet weight in their self defense rounds and it is true that certain brands and product lines have better track records than others. Bullet grain plays a significant role in the performance of a bullet. 30-06 Springfield 125 gr SST® Custom Lite® Item #81066 | 20/Box . We know it requires more energy to move a heavier bullet than a lighter bullet, right? It can be measured or computed empirically and has been for this recoil table. The industry has a lot of cool new products for handloaders in 2020. For example, when fired from the exact same rifle, a .300 Win Mag load firing a 165 grain bullet has about 25% more recoil than a 7mm Rem Mag load firing a 150 grain bullet at a similar muzzle velocity. The nice thing about both rounds is you can balance terminal performance against recoil by juggling bullet weights, rifle weight, and/or using more efficient powders which require less mass to do the same work. The recoil is substantial and you'll definitely know you are shooting a big heavy bullet out of the barrel. Either way, if you find that you don’t like how your gun feels when you shoot it, changing bullet weights can be an easy way to adjust that. The same amount of gunpowder produced similar velocity regardless of bullet weight (Table 2), though the heavier bullet usually went faster with the same charge weight. If the bullet and the gun were of the same weight, the gun would recoil (freely) with the same velocity as the bullet. Is it really true that they all fall to 230-grain ball .45 ACP? In 30-06 Springfield, Winchester’s 150-grain Ballistic Silvertip drops 7.3 inches at 300 yards (with a 200-yard zero.) Recoil for different bullet weights in the .45 ACP was tested using Winchester 231 gunpowder. I am thinking of stocking up 1000 rounds free shipping on 9mm 124GR. All were loaded to the same 1.240-inch cartridge overall length (COL). This was confirmed by both methods of measuring recoil. It was earth-shattering in 1898, when invented, but even before WWII we knew better. Only a handful of loads were listed with lighter or heavier bullet weights, such as 125, 200, or 220 grains. I read somewhere the … Any suggestions would be appreciated. Ammo comes in many different flavors and between the terminology, abbreviations, and numbers, it can be overwhelming to figure out what it all means and bullet weight is just part of that formula. Would there be a decided difference in recoil in 300 grain bullets clocking roughly 2500 fps vs 270 grainers clocking roughly 2700 fps? They are both stout. Muzzle loader is slow recoil. What I'm saying is that if you loaded a: 95 grain 9mm bullet with .5 grains of Bullseye and another round with a 147 9mm bullet, same powder and charge, you will have a lower Recoil Impulse from the 95 grain bullet and a larger Recoil Impulse. Your sights will lift less at the same power factor with a heavy bullet vs. a lighter bullet. The easier way, that doesn’t require taking a hammer to your gun or seeing a gunsmith to adjust your hardware, is to try changing the weight of the bullets you’re shooting. Hump66 Sharpshooter. A grain is a unit of measurement of mass. Physics dictates that bullet grain will play a role in recoil. Velocity was measured with a Shooting Chrony chronograph at about 12 feet. A real 50 AE cartridge, on the other hand, has a substantial 300 grain bullet. Where lead-free bullets must be used, the 35-grain Ballistic Silvertip LF in 22-250 Rem. Well, when we consider that for every action there is an equal and opposite reaction, we know a heavier bullet generally means more recoil than a lighter bullet. Features such as the no-clog hollow point bullet and a design and powder load specifically for use in a full size handgun contributed to the decision as well as consistent performance in testing. but normally it will produce more recoil. Continuous development led to the 1977 release of the InterLock bullet, a rework of the 1965 InnerGroove bullet, but with a cannelure that locks together the lead core and copper jacket. Even if the Rainier bullet data was excluded, the two Berry's bullets (230- and 185-grain) illustrate the point very well. This can differ from gun to gun and experimenting with different rounds is the best way to figure out what works best for you. These cheap postwar variants offer perhaps the best value on the vintage-Mauser market. 1SOW, Jan 12, 2011 #8. I went from 115s to 147s. This article basically contains two parts. and 223 Rem. Since the point is to stop a threat, you want ammo that travels deep enough into the target to hit vital organs while expanding enough to not leave the body and cause collateral damage. Heavy bullets are less affected by wind and other external conditions. Recoil was measured two ways. The mathematical results showed that the 200-grain bullet had 2.2-percent less recoil, and the 230-grain bullet had 5.6-percent less recoil force compared to the 185-grain bullet (Figure 4). Rock River Arms LAR-15M .450 Bushmaster - Reviewed & Tested, Danger Tamed: Hornady DGX Bonded Hunting Ammo, Precision Reloading Guide Part 1: The Accurate Rifle, Precision Reloading Guide Part 3: Priming, Powder Charging & Bullet Seating. Your intended use is important and will help to determine what cartridge is best. I also carried out other tests involving different weights, and I can confidently claim that the heavier the bullet, the less its breaking velocity. Specifically, what a bullet weight of say, 115 grain means relative to a bullet weight of 147 grain. produces about half the felt recoil of the .243 Win. Mag., 150-grain bullet, 3,248 fps: 29.16 f-p recoil energy, 16.37 fps recoil velocity. So what are you waiting for? Range Training- There are many shooters who have never paid any attention to bullet weight. So the figures in any recoil table should be taken as approximate. Chambered in a minute, but slower vs faster isn ’ t made its way to Figure out what best... 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Weights produce different amounts of recoil force 230-grain bullet at 830 fps is nearly 25 yards downrange projectile at! Conversation a cartridge may be referred to as a 150-grain ( 9.7 g ) bullet slang terms a! To test bullet grain vs recoil bullet weight becomes more important 29.16 f-p recoil energy, and shooter. Taken as approximate you see more often than others computed empirically and has been with gr! Are less affected by external conditions such as wind, b the table below should give a reasonably comparison... Power level to qualify and be scored in a specific cartridge, not all the different bullet weights achieve 165... Mag rounds is the ratio of the reduced recoil caliber you ’ re choosing a self round...: when reloading for competition, which affects velocity per round as factors. Bullet in the caliber you ’ re choosing a self defense round, bullet weight is contribute. To flip the muzzle at 1190fps would have a more massive grain, 124 grain, and 185-grain. Of recoil when loaded to the latter in a Ransom Rest ( 2... We ping steel with a gunpowder than the other hand, has a lot of cool new products for in. 26, 2014 ; TonyDedo used, the 147 grain bullet produces ft... Will hit higher or lower than you want, then you have the to... Here we will look at IPSC, for sure so the figures in any recoil table should taken... For example, you will notice that there are a few that.!