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Hunting
Long Range Hunting & Shooting
Is there a way to tighten up velocity, ES, & SD?
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<blockquote data-quote="Deputy819" data-source="post: 1409756" data-attributes="member: 98025"><p>I tried that 10 round test for a 6mm Remy that I'm still currently fighting with and never really could identify a "flat spot". The OCW test, however, showed me a node where 1 grain of powder didnt change vertical POI at 200 yards in the slightest bit even when velocity increased. For me, that test worked. Used an arbitrary COAL of .020 off the lands and was seeing 10-15's in S.D. and E.S. which is not horrible, but not THAT great. Ran the same exact test again with the ONLY change being a .010 increase in COAL and my numbers sky-rocketed into the 40's and 50's. The rifle (and Sierra bullet) didnt like that at all. When searching for good/low numbers I'll usually play with seating depth quite a bit first before switching primers, powders etc....</p></blockquote><p></p>
[QUOTE="Deputy819, post: 1409756, member: 98025"] I tried that 10 round test for a 6mm Remy that I'm still currently fighting with and never really could identify a "flat spot". The OCW test, however, showed me a node where 1 grain of powder didnt change vertical POI at 200 yards in the slightest bit even when velocity increased. For me, that test worked. Used an arbitrary COAL of .020 off the lands and was seeing 10-15's in S.D. and E.S. which is not horrible, but not THAT great. Ran the same exact test again with the ONLY change being a .010 increase in COAL and my numbers sky-rocketed into the 40's and 50's. The rifle (and Sierra bullet) didnt like that at all. When searching for good/low numbers I'll usually play with seating depth quite a bit first before switching primers, powders etc.... [/QUOTE]
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Is there a way to tighten up velocity, ES, & SD?
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