ctdonath
Member
Considering that subsonic ammo maxes out around 1000fps, any thoughts on how to efficiently maximize energy with that limit? .50BMG bullets are somewhere around 650 grains, and I don't know of anything practically heavier (larger caliber has legal issues). Thing is, the .50BMG case is way too big. Is there a combination of heavy bullet and small case that optimizes for about 1000fps?