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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
22-250 for heavier bullets?
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<blockquote data-quote="goodgrouper" data-source="post: 35673" data-attributes="member: 2852"><p>fiftydriver</p><p> Thanks for clearing that up. I have a Shilen select match barrel that seems to be exceptionally smooth and unusually fast. Maybe the reason we have had somewhat different summaries is because my barrel just happens to be an 8 groove! I don't know if it's good or bad but it does seem to work fine. Another thing that you might find interesting is that it was originally a .22-.284 chambering in 29.5" configuration. I shot 900 rounds through it very carefully when it started blowing up Bergers, and then 100 rounds after that it started blowing up Sierra's. I then cut off the bad parts(3 inches in the throught and 1 inch in the crown)and rechambered for the 22-250 AI. It's accuracy came back and shoots with a vengeance now. I actually got good accuracy at the 3250 fps mark you mentioned, but the standard deviation was around 25 fps and that just won't do for consistent 1000 yard accuracy. And when I talk about accuracy, I say "good" but that is a relative term. I alway got better groups at 400 yards than at 100. Honest. On a stack of Bibles. I think the best group I ever got with it at 100 was 7/8" and best at 600 was 2.5" 3 shot center to center. As for the twist changing further down the barrel, or actually not being a true 8", it could easy be. I have never really checked it, but I have read of such things happening before.</p><p>-goodgrouper</p><p></p><p>[ 09-15-2004: Message edited by: goodgrouper ]</p></blockquote><p></p>
[QUOTE="goodgrouper, post: 35673, member: 2852"] fiftydriver Thanks for clearing that up. I have a Shilen select match barrel that seems to be exceptionally smooth and unusually fast. Maybe the reason we have had somewhat different summaries is because my barrel just happens to be an 8 groove! I don't know if it's good or bad but it does seem to work fine. Another thing that you might find interesting is that it was originally a .22-.284 chambering in 29.5" configuration. I shot 900 rounds through it very carefully when it started blowing up Bergers, and then 100 rounds after that it started blowing up Sierra's. I then cut off the bad parts(3 inches in the throught and 1 inch in the crown)and rechambered for the 22-250 AI. It's accuracy came back and shoots with a vengeance now. I actually got good accuracy at the 3250 fps mark you mentioned, but the standard deviation was around 25 fps and that just won't do for consistent 1000 yard accuracy. And when I talk about accuracy, I say "good" but that is a relative term. I alway got better groups at 400 yards than at 100. Honest. On a stack of Bibles. I think the best group I ever got with it at 100 was 7/8" and best at 600 was 2.5" 3 shot center to center. As for the twist changing further down the barrel, or actually not being a true 8", it could easy be. I have never really checked it, but I have read of such things happening before. -goodgrouper [ 09-15-2004: Message edited by: goodgrouper ] [/QUOTE]
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22-250 for heavier bullets?
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