Re: 257 wby bad on brass?
1. I've never blown a primer with mine in firing probably 250 rounds.
2. Norma brass is what I use in a 257 Weatherby, a 300 Weatherby, a 375 H&H Magnum and a 378 Weatherby Magnum. I've not found it to be soft and, as a matter of fact, in a test done for...