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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger 215 gr 300 WM load.
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<blockquote data-quote="dstancu" data-source="post: 2947846" data-attributes="member: 9273"><p>It is probably the twist rate: if your rifle is 1:11, or possibly even 1:10, the bullet is too long to be stabilized. I had this problem trying to load ELDX 212gr in my Tikka T3x 300 wm super varmint, which had a 1:11 twist rate, and could not tighten the group no matter what I did in my reloads. The rifle shot the factory Precision Hunter (that uses ELDX 210). I wrote to Hornady, and they told me that 1:11 is not fast enough for 212gr. Then, I ordered a barrel from IBI with 1:9, and all my problems dissapeared. Heck, I was able to load the Berger EoL 145gr, and managed to make that load very accurate 1 MOA to up to 800m (I don't have a longer distance to shoot).</p><p>Berger has a very good twist rate stability calculator online, quite easy to use.</p></blockquote><p></p>
[QUOTE="dstancu, post: 2947846, member: 9273"] It is probably the twist rate: if your rifle is 1:11, or possibly even 1:10, the bullet is too long to be stabilized. I had this problem trying to load ELDX 212gr in my Tikka T3x 300 wm super varmint, which had a 1:11 twist rate, and could not tighten the group no matter what I did in my reloads. The rifle shot the factory Precision Hunter (that uses ELDX 210). I wrote to Hornady, and they told me that 1:11 is not fast enough for 212gr. Then, I ordered a barrel from IBI with 1:9, and all my problems dissapeared. Heck, I was able to load the Berger EoL 145gr, and managed to make that load very accurate 1 MOA to up to 800m (I don't have a longer distance to shoot). Berger has a very good twist rate stability calculator online, quite easy to use. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger 215 gr 300 WM load.
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