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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
22 GT; anyone with experience care to share thier experiences, general load & ballistic info. I’m considering a build.
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<blockquote data-quote="highdrum" data-source="post: 2459461" data-attributes="member: 13732"><p>I shoot a 22gt in prs. 90atips at 3100 with 35.8gr H4350, shoots very well. Barrel is a 26" hawkhill 7tw 219 bore. I ran up to 3250 w/o psi signs. Just had quarter moa of vertical dispersion at distance from 3080-3115fps so I run it in there. I know there are guys running 3k+ fps from 18-20" barrels with the 90 atips w/ rl26. George was originally building these with 6.7tw 218 bore bartleins. That's too much twist and the tight bore makes it even worse. 22creed pops bullets in 7tw 218 bore, 219 helps. Pick just enough twist to stabilize the heaviest bullet you plan to shoot at your lowest possible DA. I recommend always going 219 bore in 22 and 237 bore in 6mm. Less jacket pressure and deformity to prevent damage to it going down the pipe. This is even more important once round count gets up and throat gets some fire cracking.</p></blockquote><p></p>
[QUOTE="highdrum, post: 2459461, member: 13732"] I shoot a 22gt in prs. 90atips at 3100 with 35.8gr H4350, shoots very well. Barrel is a 26" hawkhill 7tw 219 bore. I ran up to 3250 w/o psi signs. Just had quarter moa of vertical dispersion at distance from 3080-3115fps so I run it in there. I know there are guys running 3k+ fps from 18-20" barrels with the 90 atips w/ rl26. George was originally building these with 6.7tw 218 bore bartleins. That's too much twist and the tight bore makes it even worse. 22creed pops bullets in 7tw 218 bore, 219 helps. Pick just enough twist to stabilize the heaviest bullet you plan to shoot at your lowest possible DA. I recommend always going 219 bore in 22 and 237 bore in 6mm. Less jacket pressure and deformity to prevent damage to it going down the pipe. This is even more important once round count gets up and throat gets some fire cracking. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
22 GT; anyone with experience care to share thier experiences, general load & ballistic info. I’m considering a build.
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