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Rifles, Reloading, Optics, Equipment
Gunsmithing
removing and reinstalling stock
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<blockquote data-quote="ss7mm" data-source="post: 217037" data-attributes="member: 5"><p>I guess one way to think would be a worse case scenario with a factory gun and a wood stock with no pillars or bedding. It would be possible for the gun to be placed in the stock in one position, removed and because of the sloppy fit/bedding it might then be replaced and tightened down in a slightly different position. This could and would put far different stresses and pressure on the barreled action and stock. This would be one way zero could change.</p><p></p><p>With a bedded rifle what would happen if the recoil lug was bedded tight on the bottom and for whatever reason, something got shaved off the bedding or something got into the bottom of the lug recess. Again, the possibility of different stresses although probably not as much as the above mentioned wooden stock scenario.</p><p></p><p>I have a gun that Kirby built using an A5 stock bedded and pillared and all done right. I can take the barreled action out and replace it and poi at 300 yards won't change 1 click. My buddy has a factory 700 in 308 with the factory wood stock that was bedded by someone that left a little to be desired as far as precise fit goes. This particular gun was bedded in the recoil lug/front ring area of the action only. Pull the barreled action out of that wood stock and replace it and it will change poi at 100 yards by 1" or more. There's no way you could get the pressures and forces the same each time with that gun because the action can rock in the stock because it's only bedded with about 1/4 of what might be considered a propper bedding job.</p><p></p><p>Have two people remove and replace a barreled action with one doing it haphazardly and one using a good torque wrench and the results will probably be different. I've heard people recommend that you place a barreled action into the stock with action screws only slightly tight and bump the butt on the floor to make sure the barreled action is seated firmly to the rear in the stock. In some cases this will make a difference.</p><p></p><p>You could round up 100 normal, one box a year shooters, and have them shoot, remove and replace and shoot again and they may get a different poi every time. Take the average guy on here with a precision long range rig and have him do the same and the results will be far different. Any physical measurement, dimension or property of a rifle that could possibly change when removing and replacing a barreled action has the potential to change poi. If the guns is built right and we do our part with the mechanics of the removal and replacement and the chance of much variation in poi will be eliminated.</p></blockquote><p></p>
[QUOTE="ss7mm, post: 217037, member: 5"] I guess one way to think would be a worse case scenario with a factory gun and a wood stock with no pillars or bedding. It would be possible for the gun to be placed in the stock in one position, removed and because of the sloppy fit/bedding it might then be replaced and tightened down in a slightly different position. This could and would put far different stresses and pressure on the barreled action and stock. This would be one way zero could change. With a bedded rifle what would happen if the recoil lug was bedded tight on the bottom and for whatever reason, something got shaved off the bedding or something got into the bottom of the lug recess. Again, the possibility of different stresses although probably not as much as the above mentioned wooden stock scenario. I have a gun that Kirby built using an A5 stock bedded and pillared and all done right. I can take the barreled action out and replace it and poi at 300 yards won't change 1 click. My buddy has a factory 700 in 308 with the factory wood stock that was bedded by someone that left a little to be desired as far as precise fit goes. This particular gun was bedded in the recoil lug/front ring area of the action only. Pull the barreled action out of that wood stock and replace it and it will change poi at 100 yards by 1" or more. There's no way you could get the pressures and forces the same each time with that gun because the action can rock in the stock because it's only bedded with about 1/4 of what might be considered a propper bedding job. Have two people remove and replace a barreled action with one doing it haphazardly and one using a good torque wrench and the results will probably be different. I've heard people recommend that you place a barreled action into the stock with action screws only slightly tight and bump the butt on the floor to make sure the barreled action is seated firmly to the rear in the stock. In some cases this will make a difference. You could round up 100 normal, one box a year shooters, and have them shoot, remove and replace and shoot again and they may get a different poi every time. Take the average guy on here with a precision long range rig and have him do the same and the results will be far different. Any physical measurement, dimension or property of a rifle that could possibly change when removing and replacing a barreled action has the potential to change poi. If the guns is built right and we do our part with the mechanics of the removal and replacement and the chance of much variation in poi will be eliminated. [/QUOTE]
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removing and reinstalling stock
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