Hello,
I recently bought some new Winchester brass and after about 5-6 loadings I have split about 20 % of the cases already. These are not the small splits that occurred with the previous S&B brass at about 10-15 loadings, but splits down the side of 1/8" or more.
I have loaded previous mixed brass, including Winchester, and do not recall having this problem. In fact, I recall feeling Winchester was one of the more durable cases.
I load a moderate 200 LSWC, 4.8 gr of WST and have not changed the "bell" or final crimp, if that makes a difference! I load on a SDB with factory settings, recently rebuilt.
Is Winchester not durable or perhaps I just bought a bad batch?
I "read" that other people get 20-30 loadings on good brass. If that's true then what brands do they use and/ or maybe I am "working" the brass too much by belling and crimping?
Thanks for your input.