this group is from my 458 win mag built on a 1917 action, 26" barrel, leupold 2-7 varII, and ammo was a hornady 500gr soft point with 70gr of varget at 100 yards. just gotta love this rifle. the lower group is 3 consecutive shots, measure about 3/8". the top hole is a shot while adjusting the scope. the small hole on the right is from my son's 30-06. I am just proud of this rifle.