I had some winchester nickle plated brass that was stamped 280 remington, but the case dimensions were identicle to 270 winchester! I reloaded them with 160 grain bullets to fire form my brass.
I fired two of those cases and the primers nearly fell out! I made a post of this a little more than a year ago. Never trust a bag of brass to be perfect! Check and recheck for anomallies.
The brass shoulder location was noticeably off spec! I simply necked the cases up to 308, and then neck sized them until they chambered with a slight crush fit. They are proper 280 rem brass now.
I fired two of those cases and the primers nearly fell out! I made a post of this a little more than a year ago. Never trust a bag of brass to be perfect! Check and recheck for anomallies.
The brass shoulder location was noticeably off spec! I simply necked the cases up to 308, and then neck sized them until they chambered with a slight crush fit. They are proper 280 rem brass now.
