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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm 110gr TTSX keyholing
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<blockquote data-quote="adam32+P" data-source="post: 2901643" data-attributes="member: 117982"><p>So my Dad and cousin went and shot his Rem 700 7rem mag today. They used a mild load of AA-3100 that we use for my sister's rifle (shoots 1/2moa in hers) and it keyholed. The first two shots were fine, the next two keyholed. They were shooting at 25 yards just to get it on paper. Even a super slow twist and a long bullet shouldn't keyhole that quickly. </p><p></p><p>I had them bring the rifle over so I could check it out. Ammo was fine. The barrel measured a 1/10 maybe a 1/10.25. I ran the bullet in the Berger stability calculator and it popped out a 1.96 SG, plenty stable. </p><p></p><p>So I'm really not sure what could be the issue, I thought perhaps they "bounced" the bullet into the target and they both said no.</p><p></p><p>The only other thing I can think of is if the bullets are slightly undersized and not getting enough engraving pressure to stabilize them? </p><p></p><p>Thoughts? Am I missing something obvious???</p></blockquote><p></p>
[QUOTE="adam32+P, post: 2901643, member: 117982"] So my Dad and cousin went and shot his Rem 700 7rem mag today. They used a mild load of AA-3100 that we use for my sister's rifle (shoots 1/2moa in hers) and it keyholed. The first two shots were fine, the next two keyholed. They were shooting at 25 yards just to get it on paper. Even a super slow twist and a long bullet shouldn't keyhole that quickly. I had them bring the rifle over so I could check it out. Ammo was fine. The barrel measured a 1/10 maybe a 1/10.25. I ran the bullet in the Berger stability calculator and it popped out a 1.96 SG, plenty stable. So I'm really not sure what could be the issue, I thought perhaps they "bounced" the bullet into the target and they both said no. The only other thing I can think of is if the bullets are slightly undersized and not getting enough engraving pressure to stabilize them? Thoughts? Am I missing something obvious??? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm 110gr TTSX keyholing
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