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Rifles, Reloading, Optics, Equipment
Gunsmithing
Magnum action vs. Standard Long Action Differences
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<blockquote data-quote="IdahoCTD" data-source="post: 1126210" data-attributes="member: 13110"><p>The gap between the feed rails in the back of a Remington ultra mag action is about .567". I'd have to measure the front again but it seems like it was .080 to .100" wider at the front. I just went .014" wider at the front and the back on both sides. A standard magnum is around .540". I just opened a standard (originally a .243) short action to feed a 6.5saum with a Wyatt box so the numbers are still somewhat fresh. The feed ramp needed quite a bit of work to feed the fat little saum cases correctly too. I have run standard magnum cases in ultra mag actions for years without issues but a ultra mag case won't even fit between the feed rails of a standard magnum action. The ultra mags are .550 at the base of the case and standard magnum feed rails are around .540".</p></blockquote><p></p>
[QUOTE="IdahoCTD, post: 1126210, member: 13110"] The gap between the feed rails in the back of a Remington ultra mag action is about .567". I'd have to measure the front again but it seems like it was .080 to .100" wider at the front. I just went .014" wider at the front and the back on both sides. A standard magnum is around .540". I just opened a standard (originally a .243) short action to feed a 6.5saum with a Wyatt box so the numbers are still somewhat fresh. The feed ramp needed quite a bit of work to feed the fat little saum cases correctly too. I have run standard magnum cases in ultra mag actions for years without issues but a ultra mag case won't even fit between the feed rails of a standard magnum action. The ultra mags are .550 at the base of the case and standard magnum feed rails are around .540". [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Magnum action vs. Standard Long Action Differences
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