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Hunting
Long Range Hunting & Shooting
.300 WM Won’t Chamber Factory Ammo
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<blockquote data-quote="entoptics" data-source="post: 2900694" data-attributes="member: 104268"><p>Might be tough to measure, but did you check the base to belt distance?</p><p></p><p>In my experience, virgin 300WM (and all belted mags I've dealt with) is usually WAY short from base to shoulder. They will often be >0.015" short compared to once fired. My 264WM Winchester brass was >0.025" shorter.</p><p></p><p>The belted mags are technically head spaced off the belt. So if the belt is a few thousands too long, that would cause it not to chamber, even if there was miles of clearance at the shoulder. Would also explain why you can't force it to chamber. Smooshing the shoulder down a few thousands with the bolt handle would be a lot easier than smooshing the belt down even a couple of thousandths.</p><p></p><p>Regardless, sounds like bad ammo. I'd be contacting the vendor or manufacturer looking to get my coins back, or at least some replacements.</p></blockquote><p></p>
[QUOTE="entoptics, post: 2900694, member: 104268"] Might be tough to measure, but did you check the base to belt distance? In my experience, virgin 300WM (and all belted mags I've dealt with) is usually WAY short from base to shoulder. They will often be >0.015" short compared to once fired. My 264WM Winchester brass was >0.025" shorter. The belted mags are technically head spaced off the belt. So if the belt is a few thousands too long, that would cause it not to chamber, even if there was miles of clearance at the shoulder. Would also explain why you can't force it to chamber. Smooshing the shoulder down a few thousands with the bolt handle would be a lot easier than smooshing the belt down even a couple of thousandths. Regardless, sounds like bad ammo. I'd be contacting the vendor or manufacturer looking to get my coins back, or at least some replacements. [/QUOTE]
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.300 WM Won’t Chamber Factory Ammo
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