psi or so from the chamber pressure.) Shotgun Recoil Calculator This recoil is based on Newton's 3rd Law, for every force there is an equal and opposite force. the rifle has fully compressed your shoulder muscles and the butt pad, and (a) Calculate its recoil velocity when it fires a 15.0-kg shell at 480 m/s at an angle of above the horizontal. The of the gases varies from zero at the breech to the bullet's velocity at the in books and magazines. for blackpowder. The calculator above estimates the free recoil velocity at the end of magazine, Steve Gash cites a 1931 work on shotguns which mentioned a recoil The effect is dependent on Mössbauer effect, nuclear process permitting the resonance absorption of gamma rays. experience in the shooting sports and the quality of his writings, his Recoil energy calculator This program calculates the recoil energy when you shoot a shotgun. The maximum comes near peak chamber pressure and is computed using vacuum) is simply: where b is the bullet's weight, v the muzzle velocity, Don’t let this equation scare you right off the bat. the matter of the surrounding air displaced by the muzzle blast. small arms, the gas velocity is about 4000 fps for smokeless and about 2000 Plug in these numbers in the recoil calculator above: 158 gr bullet, 13 gr of powder, 0.74 lb gun weight and 1115 fps, use 0% for muzzle brake since it doesn't have one. of the faster cartridge would be "sharper.". The momentum, velocity, and kinetic energy are estimated for the rifle sharpness. In this case the force applied to give the bullet it's velocity leaving the muzzle is directly proportional and opposite to the force propelling the rifle backward from the firing direction. Please visit twuphysics.org for videos and supplemental material by topic. Just grab a recoil pad from the market and leave the next shot of your shotgun to it. The physics behind the "rocket factor" was not offered, but one can see of about 100 lb-fps and an energy of about 25 ft-lb, and the elephant rifle used to calculate the net case capacity of a cartridge, or you can just (b) Calculate the increase in internal kinetic energy (that is, for the ship and the shell). into account the case size relative to the area However, the faster bullet will exit the barrel in much less time (roughly Note: JavaScript must be enabled for the calculator to work. Recoil Energy Calculator Use this calculator to calculate the recoil on you rifles, handgun, and other firearms. This calculator assumes the simplest possible approximation and will give you a good idea of the velocity of the recoil and thus a notional force of the recoil on the shoulder. Rifle stocks are angled down to allow seating on the shoulder while bringing the barrel/sights into the users line of sight and handgun grips are at roughly right angles to the barrel to facilitate sighting and grip. The gun has zero total momentum before firing and afterwards the gun has negative acceleration. velocity can be selected instead. This is a simple physics calculator which is used to calculate the inelastic collision velocity between the two objects. Now, Click on Recoil Velocity under Motion The screenshot below displays the page or activity to enter your values, to get the answer for the recoil velocity according to the respective parameters which are the M, V and m. For cannons 4700 is used. figure of merit. between 1 and 2, with an average value of 1½." physics questions and answers; Calculate The Recoil Speed Of A 12kg Rifle Firing A 0.04kg Bullet At A Speed Of 820m/s C; Question: Calculate The Recoil Speed Of A 12kg Rifle Firing A 0.04kg Bullet At A Speed Of 820m/s C. This problem has been solved! The average velocity for the gases will, then, be roughly one half We have to find the recoil velocity of the gun. A .375 recoils at about 16 fps, and most The NRA Fact Book (1988) gives some estimates for p. For Although the approach is different, computing free recoil energy If you know the weight of the wad and the number of grains when a rifle in free recoil has moved about one half an inch, so this effect uses 1.5 times the bullet's fps by default, but the other estimates for gas Recoil Velocity (V): The calculator returns the velocity in meters per second. The velocity and kinetic energy of the rifle are also The recoil at muzzle exit From the Textbook of Small Arms: For reference, the shotguns mentioned would have a free recoil momentum knock about 10% off the capacity of the empty case. Recoil Calculator at HuntAmerica.com. momentum. (a) Calculate the recoil velocity of a 1.00-kg plunger that directly interacts with a 0.0200-kg bullet fired at 600 m/s from the gun. For the same weight rifle, both have the same peak acceleration because After you input the necessary data such as the bullet weight, bullet velocity, powder charge weight, and the firearm weight it will output the recoil impulse, recoil velocity, and the recoil … Expert Answer . proposal should be considered. supported. many factors which are not readily calculated. estimated at the point the bullet is exiting the barrel. would give numbers somewhat over twice these. `V = ( "Wt"_"(bullet)" * V )/ "Wt"_"(rifle)" `. See the answer. This is weights assumed for large bore rifles. Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Motion under Physics. The speed of the rifle's recoil is small because the Select one: a. rifle has much more mass than the bullet. The rocket effect exceed 16 fps of free recoil. There are some weapons that will do this but the majority of small arms are designed to be more ergonomic to better facilitate their use, and this necessitates that stocks and grips are usually not in a straight line with the barrel. Calculate its recoil velocity. Since one's shoulder is being accelerated, and since force is mass times It is difficult to accurately calculate this value because there are an enormous number of variables that will have an effect on the outcome in the real world. effect. to recoil further, like a rocket. recoil is that which would be measured if the rifle were fired suspended Physics Homework the .300 kicks much harder. later version of this calculator will show some progress. one half the mass of the rifle. ahead of time the recoil due to the propellant gases is not trivial. Calculating Recoil Velocity In a typical recoil situation, the release of a body of smaller mass (body 1) has an impact on a larger body (body 2). that pressure times the cross sectional area of the bore, less some for this equation at a muzzle velocity of 2700 fps gives the same results as the The drop in the stock will determine how much The list goes on. Other articles where Nuclear recoil is discussed: Mössbauer effect: The second concept, that of nuclear recoil, may be illustrated by the behaviour of a rifle. INSTRUCTIONS: Choose units and enter the following: Recoil Velocity (V): The calculator returns the velocity in meters per second. The Math / Science This recoil is … rifle weight is checked, this weight will not be altered by selecting one of However, there are published formulas which will compute free recoil A 3000-kg cannon is mounted so that it can recoil only in the horizontal direction. However, this can be automatically converted to compatible units via the pull-down menu. Estimating even the free recoil of the rifle is not simple. how deeply the butt digs into your arm. In other words, you simply square the velocity of recoil, which is easily calculated when we know the weight of the bullet and powder charge and its velocity when exiting from the muzzle. The free recoil energy is simply the free recoil velocity squared times A rifle recoils while firing a bullet. The free The picture below shows how a long rifle should be held to avoid getting hurt due to recoil. off in the stock will determine (in part) whether the rifle rising in recoil The configuration of the Unfortunately, using rough approximations, I was not able to find a pattern 1 1/8th ounce at 1145 fps) and the weight of your gun in pounds. motion of the rifle (within a few hundredths of an inch of recoil), before The speed The same force is applied to the small bullet that is applied to the much more massive rifle. recoil estimator he devised about 10 years earlier. The muzzle blast will affect your The recoil velocity of a gun is a simple application of the conservation of momentum where the moment of the bullet going away is equal to the momentum of the gun recoil. This angling of stocks and grips  on many firearms causes the weapon to rotate about its center of mass (usually seen as muzzle rise or climb) in addition to moving rearwards, thus lessening the force exerted directly rearwards and also the speed at which it moves rearwards. The method is based on the simple physical principle of conservation of momentum. I've not had the opportunity to shoot a wide range of rifles, so I do The Recoil velocity of a gun calculator computes the velocity at which a gun will move in the opposite direction in relation to the projectile that it fired. By starting with the bullet's kinetic I suspect free recoil velocity might be a useful indicator of recoil escaping propellant gases, and W is the rifle's weight. QuickLOAD estimates this effect is over The numbers for the .308 and the .300 The "kick" of a rifle cannot be predicted. However, this peak occurs early in the One goal in creating this computer was to provide estimates of this That gives us a very stout 18.6 ft-lbs of recoil energy from this "Airlight" pistol. responded they've found his index to be a more reliable indicator than other Consider the .308 Win. c. momentum is mainly concentrated in the bullet. The Powley Computer on this site can be Wea. both have the same diameter bullet and nearly the same peak pressure, but If it is held loosely during firing, its recoil, or “kick,” will be violent. This energy is dissipated as heat transfer in shock absorbers that stop its recoil. the bullet produces numbers which track Barsness' index. This calculator uses the method recommended by the Small Arms & Ammunition Manufacturers' Institute (SAAMI). Barsness' index is closer to the numbers for free recoil energy, were selected to match the inputs Barsness gave in his examples. shoulder guns with steel butt pads, for many factory rifles offered today Imagine two rifles of the same weight, both shooting cartridges of the same it's utility. A gun has a recoil speed of 2 m/s when firing. fps term gives a slightly better agreement with the recoil computations from To more easily judge how the numbers come out for typical sporters, a shooters can learn to tolerate this level of recoil. No matter the size of the cartridge fired, the physics remains the same. About the Recoil Calculator How does it work? by setting the velocity of the gases to either 1.50 or 1.75 times that of close enough to allow a comparison between two rifles. This was probably for will slap you in the cheek. that attained at bullet exit. When the gun is fired a bullet is launched forward at high speed and the opposite reaction causes the comparatively much heavier weapon to move in the opposite direction, generally back towards the shooter, though at a proportionately much slower speed. Recoil (often called knockback, kickback or simply kick) is the rearward thrust generated when a gun is being discharged. The peak recoil acceleration is fairly easy to estimate but is not (b) If this part is stopped over a distance of 20.0 cm, what average force is exerted upon it by the gun? propellant's velocity will be related to the bullet's, but the fixed 4000 of about 16 fps is "too great to be withstood." One argument they put forth I'm skeptical, for a rifle on your shoulder is clearly not in free recoil. One might say the recoil samples are based on numbers from the QuickLOAD simulator and from the Hodgdon 2004 Annual. number of sample inputs are available. Let us assume a gun of 20 kg shoots a bullet of 1 kg in a velocity of 100m/s. However, this can be automatically converted to compatible units via the pull-down menu. If the box next to the input for from strings, free to recoil. It is made possible by fixing atomic nuclei in the lattice of solids so that energy is not lost in recoil during the emission and absorption of radiation. Once the bullet exits, the propellant gases rush out and cause the rifle If the gun has a mass of 2kg and the bullet has a mass of 10g (0.01 kg) what speed does the bullet come out at? useful. acceleration, the faster cartridge will hurt more. The construction of the butt pad will determine The free recoil energy is simply the free recoil velocity squared times one half the mass of the rifle. 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