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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
New ar-15
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<blockquote data-quote="budlight" data-source="post: 1068124" data-attributes="member: 2939"><p>It is math. As velocity goes up the less barrel twist required. Look it up. Going from 16 inch to 20 inch is about 200 fps. going from 16 to 24 inch is @350 fps In general terms that I have verified on extensive chrono time. So if you have a short 16 go for the 1:8 or 1:7.</p><p></p><p></p><p>I also have a 1:7 20 inch and it shines with 75 -80 gr. match bullets, but not as well as my match grade 24 inch 1:9.</p><p></p><p>So once you go up in barrel length forget the junk fast twist. Especially when you go to reloading near the 3300 fps bulk cheap 55 gr. I'm not bench rest shooting for a dime size hole in competition at 200 yards at @ 20 cents per bullet. I shoot the $82.50 per 1000.</p></blockquote><p></p>
[QUOTE="budlight, post: 1068124, member: 2939"] It is math. As velocity goes up the less barrel twist required. Look it up. Going from 16 inch to 20 inch is about 200 fps. going from 16 to 24 inch is @350 fps In general terms that I have verified on extensive chrono time. So if you have a short 16 go for the 1:8 or 1:7. I also have a 1:7 20 inch and it shines with 75 -80 gr. match bullets, but not as well as my match grade 24 inch 1:9. So once you go up in barrel length forget the junk fast twist. Especially when you go to reloading near the 3300 fps bulk cheap 55 gr. I'm not bench rest shooting for a dime size hole in competition at 200 yards at @ 20 cents per bullet. I shoot the $82.50 per 1000. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
New ar-15
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