Supporters Airsoft-Ed Posted May 3, 2012 Supporters Posted May 3, 2012 I was talking to my mate just now about a game we went to recently and we got onto a debate about fps. Lets say for arguments sake, a gun shoots at 500 fps using .20g BBs. If I were a sniper I wouldn't want to use .20g BBs, I'd probably use something like a .36, or for the sake of easier maths, let's say a .40. Surely, if you double the BB weight, it ought to half the fps? So a .40g BB fired from the same gun, should leave the muzzle at 250fps or there abouts. But, the AF-UK app says it'll be doing 350ish fps. How does that work?
AF-UK Founding Member Deva Posted May 3, 2012 AF-UK Founding Member Posted May 3, 2012 This is when I'm going to wish I had commented my code. It's basically the kinetic equations for motion and energy etc. It is definitely right I'm pretty sure it is because f=m/a and if you have more mass, you have a higher force, so you have more energy hence a *higher* FPS than just halving.
Supporters Airsoft-Ed Posted May 3, 2012 Author Supporters Posted May 3, 2012 Makes sense I guess. It did seem weird to think that a high power sniper would be shooting slower than a regular pistol when using heavy ammo.
Supporters M_P Posted May 3, 2012 Supporters Posted May 3, 2012 Also a 0.4g bb at 350 fps still has almost double the kinetic energy of a 0.2g at 500fps so despite the mass, itll still go surprisingly fast (wont put figures as its not interesting )
joshcowin Posted May 3, 2012 Posted May 3, 2012 The thing i do know is that a 0.40g hurts more than a 0.20g shooting at 500fps
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