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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Is my twist rate OK for my 7mm??
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<blockquote data-quote="Ingwe" data-source="post: 754115" data-attributes="member: 35101"><p>I have been obsessing about this all weekend now so I am hoping for your imput!</p><p> </p><p>I am shooting 160gr Accubonds from my 7mm Rem Mag 26" barrel with 1:10 twist. Origionally I tried 160gr Trophy Bonded Tipped Bullets (longer than the Accubonds) however I found that they shot 2" -3" groups at 100yards and the holes in the paper were oval shapped.</p><p> </p><p>I switched over to the 160gr Accubonds and found that my groups were .254 and .356 for 3 shots groups....can't do much better than that...I can't anyway!</p><p> </p><p>So now to my question. I have been reading that the 160 Accubond overall length of 1.410" makes it "marginal" on the Twist Chart for a 1:10 barrel. What I am concerned about it that even though the Accubonds are shooting incredable groups at 100 yards, will the bullets become unstable at longer ranges because the twist is too slow....IS it too slow?? </p><p> </p><p>Maybe I am having a bad night and reading too much into this so I am hoping to get your opinions on my findings.</p><p> </p><p>Thanks!</p><p> </p><p>FRank</p></blockquote><p></p>
[QUOTE="Ingwe, post: 754115, member: 35101"] I have been obsessing about this all weekend now so I am hoping for your imput! I am shooting 160gr Accubonds from my 7mm Rem Mag 26" barrel with 1:10 twist. Origionally I tried 160gr Trophy Bonded Tipped Bullets (longer than the Accubonds) however I found that they shot 2" -3" groups at 100yards and the holes in the paper were oval shapped. I switched over to the 160gr Accubonds and found that my groups were .254 and .356 for 3 shots groups....can't do much better than that...I can't anyway! So now to my question. I have been reading that the 160 Accubond overall length of 1.410" makes it "marginal" on the Twist Chart for a 1:10 barrel. What I am concerned about it that even though the Accubonds are shooting incredable groups at 100 yards, will the bullets become unstable at longer ranges because the twist is too slow....IS it too slow?? Maybe I am having a bad night and reading too much into this so I am hoping to get your opinions on my findings. Thanks! FRank [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Is my twist rate OK for my 7mm??
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