I may be the only person in America that has had good results with Bertram Brass. I use it in my 450/400 3 1/4 and in my 450 No2. I have some 450 No2 Bertram brass that has been loaded between 15 and 20 times, and is still going strong. I have one set of 20 cases that I am keeping exact numbers on, seven times so far, still looks brand new. I have no complaints. However Norma brass for my 9.3x74R will seperate on the third firing. Several others have reported the same problems in their 9.3's. If is was not for Burce Bertram we would not have brass for many different calibres.