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Hello, have a question about shoulder bumping, this is for my 6.5 cm. I bought new hornady brass, this brass band new and full sized, the shoulder is 1.580 ish. After shooting a few rounds to get my fire formed measurements, so I could bump the shoulder the recommended .001-.003. My fire formed brass is around 1.625 to 1.630. Playing around with the new brass at 1.580 and bumping the fire formed brass. The brand new brass sized at 1.580 shot way better ground than doing a bump. My question is if I size that shoulder from 1.630 down to 1.580 is that too much, and am I overworking the brass going down that far. Thanks.