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Message: <blockquote data-quote="swampratt" data-source="post: 3739770" data-attributes="member: 15054">I will add this  when i did my brass fail testing shooting at 100 yards i did not trim my cases until the case got into the rifle throat.This was .030 or .035" past max trim length.My accuracy never changed all were under 1" groups at 100 yards and powder was not weighed on a scale.Case neck surface impurities made more difference than length.Cases were only hand cleaned and necks brushed out with spinning nylon bore brush.If you are adding a crimp then case length becomes important.I do not crimp.</blockquote>