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Hunting
Extreme Long Range Hunting & Shooting (ELR)
The Perfert 338 Lapua Mag Build
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<blockquote data-quote="Dragoon300" data-source="post: 2243953" data-attributes="member: 115285"><p>I had Bartlien make a 31" .338 5R 1:10.35 to 1:9.35 LH gain twist. I had Manson make a custom reamer to my loaded round, a standard .338 Lapua throated to accept 300 grain Berger OTM's seated @ 3.9375" COAL .010" off the lands. I have used these loads for 5 years now in two different barrels for my Desert Tech SRS-A1. Both the 26" factory barrel throated deeper, and the 31" Bartlien give me 1/4 MOA groups. My magazine length is 4" and functions well.</p></blockquote><p></p>
[QUOTE="Dragoon300, post: 2243953, member: 115285"] I had Bartlien make a 31" .338 5R 1:10.35 to 1:9.35 LH gain twist. I had Manson make a custom reamer to my loaded round, a standard .338 Lapua throated to accept 300 grain Berger OTM's seated @ 3.9375" COAL .010" off the lands. I have used these loads for 5 years now in two different barrels for my Desert Tech SRS-A1. Both the 26" factory barrel throated deeper, and the 31" Bartlien give me 1/4 MOA groups. My magazine length is 4" and functions well. [/QUOTE]
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The Perfert 338 Lapua Mag Build
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