I've had 1 Mark V. It was in 375 H&H and bought it new. The come with a 3 shot target to prove that the shoot 1.5" or less, mine was with Remington 270 gr spire point ammo and just under 3/4" group. Probably the worst group ever from that rifle from a rest! I got 1/2" or smaller with good hand loads. Offhand I got 5/8 the one time I tried! All 100 yard groups. The guns are just incredibly accurate!

A LGS had a used 460 in the early 80's, I looked into ammo. I could but 100 brass, 100 bullets, 100 primers, 2 cans of powder, Weatherby brand dies and shell holder and save a little more than $100 over buying 5 boxes of ammo! But who would shoot that thing 100 times?

Ivan