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Long Range Hunting & Shooting
Barrel break in accuracy
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<blockquote data-quote="cabelasken" data-source="post: 2460205" data-attributes="member: 117774"><p>I had a shilen match frozen barrel installed on my 300 wsm about 15 years ago. After break in and attempted tuning, the best group I could print was 1 1/4". I took it back for an inspection that turned up nothing wrong. After about 150 rounds downrange, I noticed a slight improvement - 1" groups. By the time I got to 250 rounds, the 5 shot groups became 1/2" and have stayed there since. No changes to my loads were made at all. I have no explanation other than maybe a flaw existed near the muzzle that needed an extended break in. That said, Hart makes exceptional barrels and perhaps it just needs a little load tuning to help it along. I do know that a perfectly concentric barrel and chamber will make load development a lot simpler.</p></blockquote><p></p>
[QUOTE="cabelasken, post: 2460205, member: 117774"] I had a shilen match frozen barrel installed on my 300 wsm about 15 years ago. After break in and attempted tuning, the best group I could print was 1 1/4". I took it back for an inspection that turned up nothing wrong. After about 150 rounds downrange, I noticed a slight improvement - 1" groups. By the time I got to 250 rounds, the 5 shot groups became 1/2" and have stayed there since. No changes to my loads were made at all. I have no explanation other than maybe a flaw existed near the muzzle that needed an extended break in. That said, Hart makes exceptional barrels and perhaps it just needs a little load tuning to help it along. I do know that a perfectly concentric barrel and chamber will make load development a lot simpler. [/QUOTE]
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Barrel break in accuracy
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