Mine is a 300 bo. The mag works well. The problem I have is it doesn't like to go bang every time I want it to. Took the bolt apart and cleaned/adjusted internals. Used softer primers. Now I think I figure out that if the bolt handle isn't pressed down all the way, and I mean every last mm, it gives me a light strike. Problem is it don't like to stay down all the way when carrying it in the woods.
