FX In search of 215 ft lb from FX impact M4 .35

[HogKiller]

There is M3/m4 hope for the 250ftlb limit, thanks to Ernest :

His superblock along with his tungsten hammer/hammer spring opens up until 200 psi
How the accuracy will be affected is to be seen.

Accuracy is purely...sort of... a function of not having an excess of air volume, you want enough to get it out of the muzzle and that's it. There is a very sweet spot when the stars align and the birds sing....or die as the case may be.