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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
1 in 12" twist in 300 Ultramag
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<blockquote data-quote="Rodbolt" data-source="post: 143751" data-attributes="member: 7787"><p><strong>1 in 12\" twist in 300 Ultramag</strong></p><p></p><p>I purchased a 1999 Montana barreled action off Gunbroker in 300UM and bedded it in Accurate Innovations stock. After working up my best loads with the 200 AB (RL-25 @ 3225fps) accuracy was not what I expected at 100 yards (just over an inch) but it I'm getting decent (~ 2", several under) groups at 330 yards which I used to sight in for an elk hunt last fall. I've not shot it at long range but ended up using my .338 WM for the hunt. </p><p></p><p>I measured the twist with a tight fitting patch and was surprised it showed 1 turn in 12.3" !! I have little interest in a lighter bullet but most barrel makers show a 1 in 10" is needed for 200 grain bullets. I appreciate any input or ideas on this.</p></blockquote><p></p>
[QUOTE="Rodbolt, post: 143751, member: 7787"] [b]1 in 12\" twist in 300 Ultramag[/b] I purchased a 1999 Montana barreled action off Gunbroker in 300UM and bedded it in Accurate Innovations stock. After working up my best loads with the 200 AB (RL-25 @ 3225fps) accuracy was not what I expected at 100 yards (just over an inch) but it I'm getting decent (~ 2", several under) groups at 330 yards which I used to sight in for an elk hunt last fall. I've not shot it at long range but ended up using my .338 WM for the hunt. I measured the twist with a tight fitting patch and was surprised it showed 1 turn in 12.3" !! I have little interest in a lighter bullet but most barrel makers show a 1 in 10" is needed for 200 grain bullets. I appreciate any input or ideas on this. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
1 in 12" twist in 300 Ultramag
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