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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Can you polish a barrel to make it more accurate ?
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<blockquote data-quote="Bart B" data-source="post: 1803241" data-attributes="member: 5302"><p>I never "broke in" any Hart, Obermeyer, Kreiger or Springfield arsenal 7.62 barrels. All shot very accurate from the first round fired.</p><p></p><p>Most interesting were the several arsenal broach rifled barrels. They all were a bit rough but very uniform. 3078" groove diameters air gauged to verify .0001" max spread. All tested about 3 to 4 inches at 600 yards with handloads using new 7.62 M118 primed cases, IMR4320 powder and Sierra 190 HPMK's in 24" 1:12 twist 4-groove Garand barrels.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1803241, member: 5302"] I never "broke in" any Hart, Obermeyer, Kreiger or Springfield arsenal 7.62 barrels. All shot very accurate from the first round fired. Most interesting were the several arsenal broach rifled barrels. They all were a bit rough but very uniform. 3078" groove diameters air gauged to verify .0001" max spread. All tested about 3 to 4 inches at 600 yards with handloads using new 7.62 M118 primed cases, IMR4320 powder and Sierra 190 HPMK's in 24" 1:12 twist 4-groove Garand barrels. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Can you polish a barrel to make it more accurate ?
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