I crimped some last night with my RCBS die just because I wanted to see them and it turned the brass in just a little bit and made them look like factory. I will shoot them this Saturday and determine if I should do it to all of them for my AR or not. I have never had an issue without a cannelure but I like to make sure each round is as good as it can be and I like to tweak things. Gives me something to do on these long cold winter nights when I cannot go fishing.
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