I am underway, handloading for my M1icon Carbines for the first time. While sorting by headstamp through my bucket of brass, there were 50 cases of R-P. I don't remember shooting them and the brand didn't make my notes as a preferred factory load. But some comments on this headstamp from another website concerning loading for 40 S&W, which I load, said the following, "R-P brass is prone to thinness and low/poor/non-existent neck tension". Anybody had any experience loading this headstamp for 30 carbine?
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