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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
bullet expansion test results
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<blockquote data-quote="yorke-1" data-source="post: 1289187" data-attributes="member: 11960"><p>I tend to agree that the 140s weren't adequately stabilized and that's likely the case with the heavy 338s as well. My last test was done at about 36* and 1400' elevation , so that doesn't help me any. I've also grown to question the how well the polygonal rifling used in the barrel on my 6.5 Grendel stabilizes heavier bullets. We tested the 6.5x338 RUM improved with the 160 Matrix bullets out of a poly rifled barrel and compared them to a more conventional cut rifled barrel and the bullets wouldn't stabilize in the poly rifled barrel, even from a 1-8" twist at 3300 fps. I'm planning on throwing a scope on my 6.5x47 Lapua and using that for the rest of the 6.5mm testing.</p><p></p><p></p><p></p><p>Those are on my list of bullets to try in the 300 Win Mag. I was actually going to switch over to those to replace the 200gr Accubonds that I've been using as my go to hunting bullet for the 300 Win Mag.</p></blockquote><p></p>
[QUOTE="yorke-1, post: 1289187, member: 11960"] I tend to agree that the 140s weren't adequately stabilized and that's likely the case with the heavy 338s as well. My last test was done at about 36* and 1400' elevation , so that doesn't help me any. I've also grown to question the how well the polygonal rifling used in the barrel on my 6.5 Grendel stabilizes heavier bullets. We tested the 6.5x338 RUM improved with the 160 Matrix bullets out of a poly rifled barrel and compared them to a more conventional cut rifled barrel and the bullets wouldn't stabilize in the poly rifled barrel, even from a 1-8" twist at 3300 fps. I'm planning on throwing a scope on my 6.5x47 Lapua and using that for the rest of the 6.5mm testing. Those are on my list of bullets to try in the 300 Win Mag. I was actually going to switch over to those to replace the 200gr Accubonds that I've been using as my go to hunting bullet for the 300 Win Mag. [/QUOTE]
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bullet expansion test results
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