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Rifles, Reloading, Optics, Equipment
Reloading
22 creedmoor or 22 250ai
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<blockquote data-quote="VinceMule" data-source="post: 3015934" data-attributes="member: 122164"><p>New Winchester brass is .466 at the web, while Lapua is .469-.470. Depending on whose reamer print you look at, the chamber spec is .470 for the "standard" 22/250 and 243, so you can see where you could end up in trouble with premature pressure issues.</p><p></p><p>The Fix is to order a reamer that is .4713-.4720 in the web for use of Lapua brass, which the reamer makers call a CIP chamber vs SAAMI chamber.</p><p></p><p>Varrmint hunter, obviously your Gun smith got ahead of the problems with Lapua brass and had CIP reamers on hand! Congrats!</p></blockquote><p></p>
[QUOTE="VinceMule, post: 3015934, member: 122164"] New Winchester brass is .466 at the web, while Lapua is .469-.470. Depending on whose reamer print you look at, the chamber spec is .470 for the "standard" 22/250 and 243, so you can see where you could end up in trouble with premature pressure issues. The Fix is to order a reamer that is .4713-.4720 in the web for use of Lapua brass, which the reamer makers call a CIP chamber vs SAAMI chamber. Varrmint hunter, obviously your Gun smith got ahead of the problems with Lapua brass and had CIP reamers on hand! Congrats! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
22 creedmoor or 22 250ai
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