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Rifles, Reloading, Optics, Equipment
Reloading
Case head squaring
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<blockquote data-quote="daveosok" data-source="post: 59852"><p>Has anyone thought of this?</p><p></p><p>When you lock your bolt down the sear has a small spring underneath forcing the sear upwards to catch the firing pin. This force even if it is ever so slight in a stock Remington rifle will push the bolt upwards and because of the slop in the action cause the bolt to seat at an angular plane off from the centerline of the action. This will cause the bolt face to be out. If your squaring case heads and your bolt is out of square (by no means through blueprinting) wouldnt this negate the purpose of squaring case heads?</p><p>What I did on one remington was to tig weld a small bead completely around the bolt at the rear where it would have the greatest contact area in the action and cylindrically ground this weld bead down to fit in the action to take up the slop. The front doesnt receive this weld bead as the counterbore in the barrel aligns the bolt. I slightly taper the front of the bolt boss about 1.5 degrees and the counterbore in the barrel is slightly tapered to a 1.5 degrees this algins the bolt to the barrel.</p><p>I saw no great improvement by doing this although I now know that the bolt is centered to the bore of the barrel. Much more work was done to the action like cylindrically grinding the outside so that the bolt race way/ bore was concentric to the od. </p><p>The violent action accompanined with the firing of any weapon the stresses involved play havoc on the material strength and consequently bend and twist the metal so you will still be out of square at the exact moment of firing.</p><p>I will give this a shot in the above mentioned action and see if there is any difference.</p><p>This idea requires testing because I do suspect it holds some sort of advantage as it is no doubt another step to reloading which is already time consuming.</p><p>For the fellas that shoot 1000 yard comps do they square there case heads?</p><p>Its really ironic though when you think about it everything we go through to eek out the very last bit of accuracy only to see guys show up with a bone stock factory rifles with Black Hills ammo shooting groups suggesting they do everything we do but you know they dont and Ive seen this a time or two. Says something for an "exercise in futility" doesnt it /ubbthreads/images/graemlins/grin.gif makes you wonder if what your doing actually makes any sense. Course it does as the industry for handloading wouldnt make any money nor would gunsmiths with prominant names be talked about.</p></blockquote><p></p>
[QUOTE="daveosok, post: 59852"] Has anyone thought of this? When you lock your bolt down the sear has a small spring underneath forcing the sear upwards to catch the firing pin. This force even if it is ever so slight in a stock Remington rifle will push the bolt upwards and because of the slop in the action cause the bolt to seat at an angular plane off from the centerline of the action. This will cause the bolt face to be out. If your squaring case heads and your bolt is out of square (by no means through blueprinting) wouldnt this negate the purpose of squaring case heads? What I did on one remington was to tig weld a small bead completely around the bolt at the rear where it would have the greatest contact area in the action and cylindrically ground this weld bead down to fit in the action to take up the slop. The front doesnt receive this weld bead as the counterbore in the barrel aligns the bolt. I slightly taper the front of the bolt boss about 1.5 degrees and the counterbore in the barrel is slightly tapered to a 1.5 degrees this algins the bolt to the barrel. I saw no great improvement by doing this although I now know that the bolt is centered to the bore of the barrel. Much more work was done to the action like cylindrically grinding the outside so that the bolt race way/ bore was concentric to the od. The violent action accompanined with the firing of any weapon the stresses involved play havoc on the material strength and consequently bend and twist the metal so you will still be out of square at the exact moment of firing. I will give this a shot in the above mentioned action and see if there is any difference. This idea requires testing because I do suspect it holds some sort of advantage as it is no doubt another step to reloading which is already time consuming. For the fellas that shoot 1000 yard comps do they square there case heads? Its really ironic though when you think about it everything we go through to eek out the very last bit of accuracy only to see guys show up with a bone stock factory rifles with Black Hills ammo shooting groups suggesting they do everything we do but you know they dont and Ive seen this a time or two. Says something for an "exercise in futility" doesnt it [img]/ubbthreads/images/graemlins/grin.gif[/img] makes you wonder if what your doing actually makes any sense. Course it does as the industry for handloading wouldnt make any money nor would gunsmiths with prominant names be talked about. [/QUOTE]
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