I’ve used it for a while in 7STW. The last box I opened had a half dozen primer pockets that were a unusually tight. Interestingly, that box resulted in a couple blown primers with a load I’ve been using for years and has never showed signs of pressure. I’m not convinced it was the tight pockets as it was with a new can of IMR 7828 which may have been the culprit. Even the brass which blew primers had no ejector marks. I’ve had nothing but uniform results in in 30-06 and 35 Whelen brass.
Interesting. Was the blown primer load above book max?
