Thread: The Maths of Recoil

so a for example..150grn projectie going at 2500fps
we have many options to do it...
given same weight of rifle theoretically recoil SHOULD be the same.

the rocket gas effect.......now add in barrel length to equation a 30'' barrel which poked that 150grn projectile at 2500fps will have less blast than a 14'' barrel doing the same.....reguardless of amount of powder used BECAUSE it will be completely burnt before projectile exits.

Ive heard this same argument countless times with shotguns.....folks saying a 20ga recoils less than 12ga or vice versa...if both have 1 1/4oz payload and both weight 7lb..... if velocity is same so will be the recoil.
the ONLY other factor is amount of squeeze payload has when entering barrel.

biggest difference with top example is the noise will be further from ears so will seem less violent. longer barrels are definitely quieter, perceived recoil will be less even if measured felt recoil isnt.