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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
max effective barrel length for .243?
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<blockquote data-quote="gebhardt02" data-source="post: 767131" data-attributes="member: 12695"><p>I have two .243 Win rifles with Bartlein barrels, both 8 twist. Rifle 1 with Lapua brass, BR-2 primer, H4350, and Berger 105 VLDs is getting 3030 fps from a 22" barrel measured from the front of the lug. The other is 21" from the front of the lug and is running the 105 AMAX with similar powder charge. Haven't chrono'd this load yet but I expect it to be around 3K also. Rifle 1 has slight pressure sign in high temps, no problems with temps less than 70. I'm going to back down the powder charge by .2 grain and see how accuracy and velocity are affected, but again don't expect much change. The 243 is fine with a 22" barrel. Longer than that will get you higher velocity though if you need it.</p><p> </p><p>Geb</p></blockquote><p></p>
[QUOTE="gebhardt02, post: 767131, member: 12695"] I have two .243 Win rifles with Bartlein barrels, both 8 twist. Rifle 1 with Lapua brass, BR-2 primer, H4350, and Berger 105 VLDs is getting 3030 fps from a 22" barrel measured from the front of the lug. The other is 21" from the front of the lug and is running the 105 AMAX with similar powder charge. Haven't chrono'd this load yet but I expect it to be around 3K also. Rifle 1 has slight pressure sign in high temps, no problems with temps less than 70. I'm going to back down the powder charge by .2 grain and see how accuracy and velocity are affected, but again don't expect much change. The 243 is fine with a 22" barrel. Longer than that will get you higher velocity though if you need it. Geb [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
max effective barrel length for .243?
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