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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
264 WM velocities w/140 Bergers
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<blockquote data-quote="rooster721" data-source="post: 724095" data-attributes="member: 40654"><p>Reason I'd like to try that 5-R has more to do with the edges of the rifling being lapped & essentially duller/gentler on the jacketing.. thin jacketed bullets like the Berger namely, have a tendency to tear apart at velocities over (+/-) 3275fps and literally dynomite in flight before reaching the target. I had the 168's over 3300 through my lazz-firebird and was lucky to see 1 shot in 3 get to my paper. Tuned it just under 3200 and it's perfect.. problem went away. And I HAVE talked to others confirming the same issue. The 5-R isn't available in 7mm, for that particular rifle, but in 6.5 it is. I would be curious to see what a longer barrelled 264 could do far as velocities go and VLD's.. In my opinion, I would imagine the gentler 5-R rifling might be te ticket to allowing velocities above 3275 be reached reliably with the Bergers.. 264 is one calibre that could probably do it**</p></blockquote><p></p>
[QUOTE="rooster721, post: 724095, member: 40654"] Reason I'd like to try that 5-R has more to do with the edges of the rifling being lapped & essentially duller/gentler on the jacketing.. thin jacketed bullets like the Berger namely, have a tendency to tear apart at velocities over (+/-) 3275fps and literally dynomite in flight before reaching the target. I had the 168's over 3300 through my lazz-firebird and was lucky to see 1 shot in 3 get to my paper. Tuned it just under 3200 and it's perfect.. problem went away. And I HAVE talked to others confirming the same issue. The 5-R isn't available in 7mm, for that particular rifle, but in 6.5 it is. I would be curious to see what a longer barrelled 264 could do far as velocities go and VLD's.. In my opinion, I would imagine the gentler 5-R rifling might be te ticket to allowing velocities above 3275 be reached reliably with the Bergers.. 264 is one calibre that could probably do it** [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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264 WM velocities w/140 Bergers
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