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Rifles, Reloading, Optics, Equipment
Reloading
300win mag 215 berger help
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<blockquote data-quote="barefooter56" data-source="post: 1344211" data-attributes="member: 85389"><p>Even a cold /fouled barrel MAY need a few rounds down it before you start your testing. Personally I do not let the barrel get to "stone cold" between shots. I usually do all my test group one right after another , (BUT I do not chamber the round until my sights are back on the target between shots). Then let the rifle get to where I can touch the barrel and not burn my fingers before shooting the next test group. I usually use 3 shot groups for testing until I get to the chronograph stage after my load is worked up. Then I will go with 10 shot group to get a more accurate SD (standard deviation) number. How did your second test group "open up" ? Horizontal, vertical, angular?</p></blockquote><p></p>
[QUOTE="barefooter56, post: 1344211, member: 85389"] Even a cold /fouled barrel MAY need a few rounds down it before you start your testing. Personally I do not let the barrel get to "stone cold" between shots. I usually do all my test group one right after another , (BUT I do not chamber the round until my sights are back on the target between shots). Then let the rifle get to where I can touch the barrel and not burn my fingers before shooting the next test group. I usually use 3 shot groups for testing until I get to the chronograph stage after my load is worked up. Then I will go with 10 shot group to get a more accurate SD (standard deviation) number. How did your second test group "open up" ? Horizontal, vertical, angular? [/QUOTE]
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Reloading
300win mag 215 berger help
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