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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
ATTN: sr90 velocity loss with 2" shorter barrel
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<blockquote data-quote="Steve Shelp" data-source="post: 21879" data-attributes="member: 22"><p>Sr90,</p><p> It will go up some. I don't know if I can answer how much though. Another shooter from the NC 1000yd club, Bill Shehane has a 338 Yogi on a 45" barrel and he got 3165fps with a 96gr load of R25 and 300gr bullets. His chamber was cut with the same reamer right after mine. After he got done screwing around with about 5 different barrel block setups he finally got it shooting pretty consistant, but then stopped shooting it. So I don't know the real accuracy potential with the higher velocity. He hasn't shot it in over a year or so now.</p><p> Then the question is.... would the best accuracy at the higher velocity node match the best accuracy of the low velocity node? My thinking right now is no, but it's all speculation and nobody has any proof one way or the other. That's why the quest continues for that elusive .000" group. But I did come within 58 thousands of that perfect group this past weekend with my Light Gun class rifle. We're having fun now!! whhaaa hooooo</p><p></p><p>FYI: notice the relatively small velocity increase of that 45" barrel over my old 32". Find and read Dan Lilja article on using extra long barrels and velocity loss. I'm may be going out on a limb here, but there's probably a reason why Darryl's 338/416 barrel is in the high 30" range.</p><p></p><p>Good Luck,</p><p>Steve</p></blockquote><p></p>
[QUOTE="Steve Shelp, post: 21879, member: 22"] Sr90, It will go up some. I don't know if I can answer how much though. Another shooter from the NC 1000yd club, Bill Shehane has a 338 Yogi on a 45" barrel and he got 3165fps with a 96gr load of R25 and 300gr bullets. His chamber was cut with the same reamer right after mine. After he got done screwing around with about 5 different barrel block setups he finally got it shooting pretty consistant, but then stopped shooting it. So I don't know the real accuracy potential with the higher velocity. He hasn't shot it in over a year or so now. Then the question is.... would the best accuracy at the higher velocity node match the best accuracy of the low velocity node? My thinking right now is no, but it's all speculation and nobody has any proof one way or the other. That's why the quest continues for that elusive .000" group. But I did come within 58 thousands of that perfect group this past weekend with my Light Gun class rifle. We're having fun now!! whhaaa hooooo FYI: notice the relatively small velocity increase of that 45" barrel over my old 32". Find and read Dan Lilja article on using extra long barrels and velocity loss. I'm may be going out on a limb here, but there's probably a reason why Darryl's 338/416 barrel is in the high 30" range. Good Luck, Steve [/QUOTE]
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ATTN: sr90 velocity loss with 2" shorter barrel
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