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Tennessee Gun Owners Forums
Rifles
7.62mm
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<blockquote data-quote="jlanecr500" data-source="post: 5024245" data-attributes="member: 16430"><p>Pressure rating: The 7.62x51 SAMMI spec is 50,000 CUP or 58 000 psi max.</p><p>The 308 SAMMI spec is 62 000 psi max. </p><p>No big deal.</p><p></p><p>Chamber length or headspace:</p><p>The 7.62x51 chamber headspace spec is .005" longer than the 308 spec. This is to accommodate ammo made in many different countries in battle rifles. </p><p>The bottom line is: If it chambers in your gun ( bolt fully closes into battery position) then it is ok to use. </p><p>Period.</p></blockquote><p></p>
[QUOTE="jlanecr500, post: 5024245, member: 16430"] Pressure rating: The 7.62x51 SAMMI spec is 50,000 CUP or 58 000 psi max. The 308 SAMMI spec is 62 000 psi max. No big deal. Chamber length or headspace: The 7.62x51 chamber headspace spec is .005" longer than the 308 spec. This is to accommodate ammo made in many different countries in battle rifles. The bottom line is: If it chambers in your gun ( bolt fully closes into battery position) then it is ok to use. Period. [/QUOTE]
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Tennessee Gun Owners Forums
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7.62mm
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