So .600 ne can or cant be built on a shotgun action?!
Seems here it can.......
It can, and I did. 577 2.75" NE, regulated to 750 grain bullet at 1950 FPS for 6400 FPE. Weight is 13.3 lbs, 14.74" pull, box lock, greener cross bolt, 24" Pac-nor barrels.