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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Potential downsides to fast twist barrel?
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<blockquote data-quote="Jon Bischof" data-source="post: 1840409" data-attributes="member: 879"><p>This is both fascinating and terrifying at the same time...sorta like when you drink too much coffee and you are filled with equal parts joy and rage.</p><p></p><p>I tried Berger 156 grain in my new Sauer 6.5 CM, thinking that might be a great bullet for the farther shots I may take on deer. First three all keyholed the target, impacting sideways. Anyway, the Twist on this rifle is 1:8.66" Yeah, that is the first time I've see that too. After reading this thread, it makes a lot more sense to me now. Sauer didn't engineer this sporter weight rifle to be a long range tool. After shooting every bullet weight from 125 to 156, it seems they chose this Twist Rate to do best with 129-140 grain bullets. I does OK with 142 Accubond LR and 143 ELD-X, but it is fantastic with 129-140 grain bullets. So, I guess that's what I will use for hunting this Fall. But I have not had any truly long range shot opportunities yet where I hunt anyway, so my shots will be under 400, most likely.</p><p></p><p>I noticed that their 6.5 PRC rifle has a 1:8" twist, so they are thinking folks will want to shoot longer heavier bullets in it.</p></blockquote><p></p>
[QUOTE="Jon Bischof, post: 1840409, member: 879"] This is both fascinating and terrifying at the same time...sorta like when you drink too much coffee and you are filled with equal parts joy and rage. I tried Berger 156 grain in my new Sauer 6.5 CM, thinking that might be a great bullet for the farther shots I may take on deer. First three all keyholed the target, impacting sideways. Anyway, the Twist on this rifle is 1:8.66" Yeah, that is the first time I've see that too. After reading this thread, it makes a lot more sense to me now. Sauer didn't engineer this sporter weight rifle to be a long range tool. After shooting every bullet weight from 125 to 156, it seems they chose this Twist Rate to do best with 129-140 grain bullets. I does OK with 142 Accubond LR and 143 ELD-X, but it is fantastic with 129-140 grain bullets. So, I guess that's what I will use for hunting this Fall. But I have not had any truly long range shot opportunities yet where I hunt anyway, so my shots will be under 400, most likely. I noticed that their 6.5 PRC rifle has a 1:8" twist, so they are thinking folks will want to shoot longer heavier bullets in it. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Potential downsides to fast twist barrel?
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