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338 Norma Review By Ward W. Brien
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<blockquote data-quote="jp67" data-source="post: 505374" data-attributes="member: 5829"><p><a href="http://en.m.wikipedia.org/wiki/Sako_TRG" target="_blank">Sako TRG</a></p><p></p><p>see bottom of page</p><p></p><p>"The Finnish Army found out during a test/trails program and 7 years of actual service that the barrels of their Sako TRG-42's lasted 4000 to 5000 rounds with Lapua Lock Base B408 factory ammunition before showing impermissible accuracy decay. The Finnish Army consistent accuracy requirement for these rifles is ≤ 1 MOA at 1000 m. If this requirement is not met the TRG-42 gets a new .338 Lapua Magnum barrel. This is normal practice for active high performance precision rifle operators who regard barrels as expendable items. The continuous use of very powerful handloads (which results in higher muzzle velocities) resulted in much quicker throat erosion reducing the TRG-42 barrels accuracy life to 1000 to 2000 rounds."</p></blockquote><p></p>
[QUOTE="jp67, post: 505374, member: 5829"] [url=http://en.m.wikipedia.org/wiki/Sako_TRG]Sako TRG[/url] see bottom of page "The Finnish Army found out during a test/trails program and 7 years of actual service that the barrels of their Sako TRG-42's lasted 4000 to 5000 rounds with Lapua Lock Base B408 factory ammunition before showing impermissible accuracy decay. The Finnish Army consistent accuracy requirement for these rifles is ≤ 1 MOA at 1000 m. If this requirement is not met the TRG-42 gets a new .338 Lapua Magnum barrel. This is normal practice for active high performance precision rifle operators who regard barrels as expendable items. The continuous use of very powerful handloads (which results in higher muzzle velocities) resulted in much quicker throat erosion reducing the TRG-42 barrels accuracy life to 1000 to 2000 rounds." [/QUOTE]
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