I see the 45-120 mentioned rather often. Why not go with the 450 #2 Nitro Express its pressures are in the 25,000 range and cases though not cheep, (around $5.00 each) last for ever. Some of my cases are going on their 15th loading and are still fine. With them lasting this long the price is not much of a factor One other point about the 450#2 N.E. is that a loaded round is nearly 4.5" long and really high on the cool factor.