I hunted with the 2506 for 6 or 7 years in the 1970s and it was a spectacular killer. Readers should note that the H4831 that Milek refers to was the old surplus powder that was slower burning than todays H4831..I found that even the 120 speer was a bit soft a 2506 velocities and eventually went to the 115 gr nosler partition which worked perfectly.