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Rifles, Reloading, Optics, Equipment
Gunsmithing
Model 700 chambering issues
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<blockquote data-quote="NesikaChad" data-source="post: 221751" data-attributes="member: 7449"><p>Is this a brand new gun or one you just acquired? I have to assume it is.</p><p></p><p>If this is redundant, I apologize, but lets cover the fundamentals a bit.</p><p></p><p>Strip the bolt of anything that has or is driven by a spring and recheck your headspace with a SAAMI spec go gauge. The bolt should fall into battery with no effort on your part. </p><p></p><p>If it does not do that, then you have a chamber that's tight.</p><p></p><p>There are a couple options, the first is the "right" answer, but all will work.</p><p></p><p>1. Either send the gun back or chase the existing chamber with a finishing chamber reamer of the same cartridge.</p><p></p><p>2. Size all your brass so that they will chamber, which will require bumping the shoulder back a bit and maybe trimming the necks if its really out of whack. </p><p></p><p>3. Taking a cut off the back of the bolt lugs or from the bolt face to loosen things up. Understand that doing this has an effect on the timing of the action and it will reduce the amount of firing pin travel (not protrusion, just travel) Unless we are talking HUGE amounts I wouldn't concern myself with that though.</p><p></p><p>Now, if the gauge does indeed fall on the chamber and the rifle is in proper headspace, then I'd obtain a small quantity of brand new brass and go from there.</p><p></p><p>Good luck.</p></blockquote><p></p>
[QUOTE="NesikaChad, post: 221751, member: 7449"] Is this a brand new gun or one you just acquired? I have to assume it is. If this is redundant, I apologize, but lets cover the fundamentals a bit. Strip the bolt of anything that has or is driven by a spring and recheck your headspace with a SAAMI spec go gauge. The bolt should fall into battery with no effort on your part. If it does not do that, then you have a chamber that's tight. There are a couple options, the first is the "right" answer, but all will work. 1. Either send the gun back or chase the existing chamber with a finishing chamber reamer of the same cartridge. 2. Size all your brass so that they will chamber, which will require bumping the shoulder back a bit and maybe trimming the necks if its really out of whack. 3. Taking a cut off the back of the bolt lugs or from the bolt face to loosen things up. Understand that doing this has an effect on the timing of the action and it will reduce the amount of firing pin travel (not protrusion, just travel) Unless we are talking HUGE amounts I wouldn't concern myself with that though. Now, if the gauge does indeed fall on the chamber and the rifle is in proper headspace, then I'd obtain a small quantity of brand new brass and go from there. Good luck. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Model 700 chambering issues
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