Back starting in 1973, I used mine (on a ZKK602 in .358 Norma, then .385H&H) for 3-postions shooting, right up until I build a .308 match rifle specifically for that event. I really liked the pop-up peep. I also used cast bullets in both barrels for competition.
-------------------- Daryl
"a gun without hammers is like a Spaniel without ears" King George V