![]() ![]() This isy second Diana Stormrider Ive gotten from Pyramid air and its light weight and simple design make it a great small game rifle for younger hunters to use. My second question is based on I maybe spinning my wheels, and the information already exist. Muzzle Energy: 20 ft/lbs Measured with 8.18 ammo: Stock: Beech: Grip: Ambi: Color. Did I get it right? It will only work if Muzzle Energy is constant. So if I want a velocity of say 900 fps to generate 20.48 ft/lbs of Muzzle Energy would require a 11.4 grain pellet. Using that formula, and knowing what Velocity and Muzzle Energy are, the equation can be rewritten to solve for weight with: My assumption is Muzzle Velocity remains constant regardless if the projectile is light or heavy. At least get in the ball park +/_ 1 grain. However being an engineer good with math, I think I figured out how to calculate the required weight to minimize trial/error time and expense. OK I know how to slow the pellet down by making it heavier. Ideally I have read and heard optimum velocity is 800 to 900 fps. I understand why as you approach sonic speeds, creates turbulence that bounces the projectile around. After doing some research it has come to my attention 970 FPS is a little too fast and will result in less accuracy. OK I know what all that means and the math behind it. It will be used for hunting small squirrel sized game and smaller. Any I bought him a 22 cal Gamo Whisper Fusion air riffle. This muzzle energy calculator should prove pretty useful in a wide variety of applications. But, a carbon fiber tank that’s pressurized to 4,500 psi will continue to fill a PCP to 3,000 psi many times. ![]() After that you’ll stop at 2,925 psi, then 2,850 psi and so on. Just enter bullet weight and velocity, and this handy foot pounds of energy calculator will return a muzzle energy value, in foot-pounds of energy. You might be able to fill a PCP to 3,000 psi two times from a 3,000 psi scuba tank, and after that the next fill might end at 2,975 psi. If I had my way would have been a 22 LR, but Dad, my Son, wants to wait until he is 15 for a fire arm. A simple, easy to use muzzle energy calculator to find out foot pounds of energy of a projectile. Anyway have bought my 13 year-old grandson his first Air Rifle. The difference does not matter which ever constant is used for the FPE calculation.OK my name is Dereck, I know my way around fire arms, but new to Air Riffles other than my youth days. The constant 450240 or 450436.7 depends on which value you use for the velocity of gravity, 32.16 ft/s/s or 32.17405 ft/s/s. To convert FPE to Joules multiply by 1.3558, Joules x. Easily load a projectile, cock the gun, take aim. ![]() Not only does the Gamo Swarm Fusion 10X Gen3i gas-piston air rifle incorporate the same innovative technology that made its older sibling such a great plinker, pest eliminator and small-game hunter. Texans only, which produces an additional 100 fpe. Gamo’s next-generation Swarm break-barrel repeater has been making headlines since its early-2019 introduction - and for good reason. 45-caliber bullets going up to 1,000 fps and getting 600+ ft-lbs., thanks in part to AirForces updated TX2 valve, available in. Note, PF has little if any meaning for pellet guns and should be ignored. The AirForce Texan is the worlds most powerful production air rifle. PF = Power Factor, pellet weight x FPS divide by 1000 = PF. FPS = Feet Per Second, FPE = Foot Pounds of Energy. ![]()
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