Assault Rifle - 12.7x99mm BMG - USA - Semi Auto - The gunsmiths at VPA Gunworks wondered about the viability of the 50 BMG round as a tactical round.  Clearly the power of the 50 could be exploited, but nobody had up until that point.  In an effort to capture market share, they designed the "Moose", a semi-auto assault rifle based on the 50 BMG cartridge.  The M257-50 actually worked.  Recoil was punishing, but then so was the damage dealt!  The stopping power is phenomenal, but gross over-penetration and massive recoil has stopped this interesting weapon from achieving greater exposure.  (c)C.E. Waters
