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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
243 & 1-9.25" barrel twist at long range????
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<blockquote data-quote="CPorter" data-source="post: 93101" data-attributes="member: 4952"><p><strong>Re: 243 & 1-9.25\" barrel twist at long range????</strong></p><p></p><p>The longer bullets require a faster twist rate to shoot really well. These are the 100 grain alloy bullets like the grand slam and the 105 grAmax, 107gr SMK, and 115gr Lapua(?). Hornady recommends a 1:8 twist or faster for the A-max. To get it to shoot out of a 1:9.125 and not precess or tumble you would to to load higher than normal velocities for a .243 or 6mm.</p><p></p><p> I tried them in my Rem 700 and got 1.5 moa out of them but didn't push velocities past recommended loads. The gun &amp; I can shoot .3 moa with lighter bullets.</p><p></p><p>FWIW, the 55-70 grain ballistic tips (70 gr my fav), Vmax and Speer TNT work quite well. I use the 70 gr Noslers out at 500 yards. They also have a 80 gr ballistic tip for varmints but I haven't developed a better load than my 70 gr perform so haven't used them except in testing.</p></blockquote><p></p>
[QUOTE="CPorter, post: 93101, member: 4952"] [b]Re: 243 & 1-9.25\" barrel twist at long range????[/b] The longer bullets require a faster twist rate to shoot really well. These are the 100 grain alloy bullets like the grand slam and the 105 grAmax, 107gr SMK, and 115gr Lapua(?). Hornady recommends a 1:8 twist or faster for the A-max. To get it to shoot out of a 1:9.125 and not precess or tumble you would to to load higher than normal velocities for a .243 or 6mm. I tried them in my Rem 700 and got 1.5 moa out of them but didn't push velocities past recommended loads. The gun & I can shoot .3 moa with lighter bullets. FWIW, the 55-70 grain ballistic tips (70 gr my fav), Vmax and Speer TNT work quite well. I use the 70 gr Noslers out at 500 yards. They also have a 80 gr ballistic tip for varmints but I haven't developed a better load than my 70 gr perform so haven't used them except in testing. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
243 & 1-9.25" barrel twist at long range????
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