Never had enough time on my hands to get into paper patching I just slug and buy molds that are larger depending on the dimensions of a fired case neck and actual bore dimensions. I did a few pp bullets and I noticed how bright my bores got. Apparently shooting pp bullets is like fire lapping your barrel. Now I am usually shooting some rather questionable bores and a dozen pp bullets will really clean up your barrel. I actually tried this on a .303 with .308 bullets, 2 wraps of thin tracing paper, a minimum load and my bore was clean and smooth.
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