Has anyone ever used a cutdown 223 sizing die to finish forming and resizing cases?
Has anyone ever used a cutdown 223 sizing die to finish forming and resizing cases?
Not this specific combination 5.7/223 but I tried it with something else. It was a long time ago and a dismal failure so I don't remember what it was. I do remember it was impossible for me to maintain concentricity between the neck and the body of the case. While It's not impossible to get a useable casing doing it the way you propose, I believe you'll be throwing away a lot more brass than you'll be shooting. I shoot the 5.7 and I know forming and loading dies are expensive. Maybe someone else will have a better solution.
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