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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338-378 M700
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<blockquote data-quote="Brent" data-source="post: 21123" data-attributes="member: 99"><p>Well I just talked to my brother, he's having his Rem. 300 RUM rebarreled to 338/378 with a 30", .750" at muzzle Pacnor 1-10 twist. Dave at Nitro Gunwoks says it will take alot of work to feed if the single shot isn't enough for him. The bolt face margin will be about .050" instead of .075". I believe it will use a Sako extractor. </p><p></p><p>I understand he has built the 30/378's with a max length 30" barrel not blocked on the Rem. 700 with no problems.</p><p></p><p>I have a few questions though. </p><p>How much margin on the face is necessary and why?</p><p>Does this margin do anything other than capture the head for feeding and extraction? </p><p>Does the barrel thread diameter leave the chamber walls to thin? </p><p>If so, how much is to thin?</p><p>Thanks for the help. Sorry to prod for another deeper explanation, that just my logical way I guess. <img src="http://images/icons/smile.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Brent, post: 21123, member: 99"] Well I just talked to my brother, he's having his Rem. 300 RUM rebarreled to 338/378 with a 30", .750" at muzzle Pacnor 1-10 twist. Dave at Nitro Gunwoks says it will take alot of work to feed if the single shot isn't enough for him. The bolt face margin will be about .050" instead of .075". I believe it will use a Sako extractor. I understand he has built the 30/378's with a max length 30" barrel not blocked on the Rem. 700 with no problems. I have a few questions though. How much margin on the face is necessary and why? Does this margin do anything other than capture the head for feeding and extraction? Does the barrel thread diameter leave the chamber walls to thin? If so, how much is to thin? Thanks for the help. Sorry to prod for another deeper explanation, that just my logical way I guess. [img]images/icons/smile.gif[/img] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338-378 M700
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