I have used Bertram brass for all of my "odd" size calibers, the larger cases (475 No2 X 3 1/2") have been fired at least 10 times with full loads, and I am just retiring my 45/120 cases after 9 years as the primer pockets are loose, these have been reloaded at least 5 times a year (45 loadings), so I have been more than satisfied with Bertram brass.