I've got a factory 700 rem. VSF 223 that I want to shoot out to 400 yards maybe more at crows and maybe some foxes and coyotes. It always shoot 52 gr sierra's and H335 around a 3/8 inch 5 shot at 100 if I don't mess it up. I have a couple 243's but this gun is just easy to shoot and load but I have never loaded anything heavier than 53's. Thanks for all the shared info.