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Rifles, Reloading, Optics, Equipment
Reloading
Winshester model 70 ...243
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<blockquote data-quote="Bart B" data-source="post: 619498" data-attributes="member: 5302"><p>Winchester factory barrels are know to usually be a bit on the big side in groove diameter. SAAMI spec's 'em at .243.</p><p></p><p>If you can slug the barrel then measure its groove diameter, get bullets that are a few ten-thousandths larger. If your groove measures .2438, you will probably get best accuracy with those at .2440 or bigger.</p></blockquote><p></p>
[QUOTE="Bart B, post: 619498, member: 5302"] Winchester factory barrels are know to usually be a bit on the big side in groove diameter. SAAMI spec's 'em at .243. If you can slug the barrel then measure its groove diameter, get bullets that are a few ten-thousandths larger. If your groove measures .2438, you will probably get best accuracy with those at .2440 or bigger. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Winshester model 70 ...243
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