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Long Range Hunting & Shooting
help with 338-378
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<blockquote data-quote="B23" data-source="post: 697916" data-attributes="member: 13222"><p>I used to have a 338-378 Accumark. Bought it brand new. Had a NF 5.5-22x56 on it. It would shoot MOA as long as you didn't try and push it very hard. Shot mostly 225/250 Accubonds and some Barnes 225 ttsx. If I never shot them much over 3050fps it shot well. If you tried to steam them up for more FPS the groups opened up and it looked like a shotgun pattern.</p><p> </p><p>IMO, the skinny #3 factory barrel is/was the problem. I think you need a lot more meat in the barrel when you're shooting a cannon like the 338-378.</p><p> </p><p>I would go with a straight 338 Lapua and see how it shoots. If you have a love affair with Weatherby I think they chamber 338 Lapua in one of their factory rifles now too.</p></blockquote><p></p>
[QUOTE="B23, post: 697916, member: 13222"] I used to have a 338-378 Accumark. Bought it brand new. Had a NF 5.5-22x56 on it. It would shoot MOA as long as you didn't try and push it very hard. Shot mostly 225/250 Accubonds and some Barnes 225 ttsx. If I never shot them much over 3050fps it shot well. If you tried to steam them up for more FPS the groups opened up and it looked like a shotgun pattern. IMO, the skinny #3 factory barrel is/was the problem. I think you need a lot more meat in the barrel when you're shooting a cannon like the 338-378. I would go with a straight 338 Lapua and see how it shoots. If you have a love affair with Weatherby I think they chamber 338 Lapua in one of their factory rifles now too. [/QUOTE]
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