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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What twist?
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<blockquote data-quote="Prairie" data-source="post: 2254933" data-attributes="member: 48583"><p>An experience I had puzzled me for a long time until I did some hands-on research. I had loaded up some Barnes 50 grain Varmint Grenade bullets for a couple of 14:1 twist 22-250's I have. Went to the range and they key-holed that target at 100 yds. Yet, when I loaded up some Hornady 50 grain V Max's, they shot a ragged hole at 100 yds. Well, I was gnawing at my tongue and scratchin' at my desk top trying to figure that one out until I found out that the Barnes bullets were longer than the Hornady's to make up for the lighter weight of the all-copper bullets. Also I found that they would not stable out of my 14:1 twist .220 Swift. I pulled all the Varmint Grenade bullets, loaded them up for my 8:1 twist barrel in my AR-15 and they shot sub zero groups at 100 yards. Problem solved. Findings: longer bullet requires faster twist. shorter/lighter bullet requires slower twist. Also found that shooting light and shorter bullet at a faster twist rate and higher velocity tended to come apart. This is probably know by a lot of shooters but just my experience finding out for myself.</p></blockquote><p></p>
[QUOTE="Prairie, post: 2254933, member: 48583"] An experience I had puzzled me for a long time until I did some hands-on research. I had loaded up some Barnes 50 grain Varmint Grenade bullets for a couple of 14:1 twist 22-250's I have. Went to the range and they key-holed that target at 100 yds. Yet, when I loaded up some Hornady 50 grain V Max's, they shot a ragged hole at 100 yds. Well, I was gnawing at my tongue and scratchin' at my desk top trying to figure that one out until I found out that the Barnes bullets were longer than the Hornady's to make up for the lighter weight of the all-copper bullets. Also I found that they would not stable out of my 14:1 twist .220 Swift. I pulled all the Varmint Grenade bullets, loaded them up for my 8:1 twist barrel in my AR-15 and they shot sub zero groups at 100 yards. Problem solved. Findings: longer bullet requires faster twist. shorter/lighter bullet requires slower twist. Also found that shooting light and shorter bullet at a faster twist rate and higher velocity tended to come apart. This is probably know by a lot of shooters but just my experience finding out for myself. [/QUOTE]
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What twist?
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