My Forbes and Colt/NULA both will shoot a variety of bullets to roughly the same point of impact. One rifle was a stock Rem. 700 that still had the speed bump and this 7RM would put 140s-175 grain bullets in the same group at 100. Others were free floated. Seemed the cartridge was the main factor, the 375 H&H is another that can do this on a routine basis. My 300 WM has a bedding block and won't shoot 150s & 180s the same point of impact.