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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bedding problem?
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<blockquote data-quote="Coyboy" data-source="post: 538224" data-attributes="member: 3733"><p>first thing on any a-bolt is check to see that the front action screw is not bottoming out on the barrel thread tennon, unlike a remy or savage the a-bolts front screw goes into the front reciever ring under the barrel tennon. contact here is bad.</p><p></p><p>same goes for the front scope base screw.</p><p></p><p>If your good in those two spots it is time to experiment a little, two things to try.</p><p></p><p>1****Cut up a buisness card and stick it under the front reciever ring between the action and the stock. What this will do when tightened up is cause your barrel to point up slightly in the fore-end thus having the effect of more free float.</p><p></p><p>Shoot the gun this way. look for a NOTICABLE change in group shape and size.</p><p></p><p>If it changes greatly from your verticle string then yes you could correct the issue with bedding and free float.</p><p></p><p>2**** stack up buisness cards under the barrel in the tip of the forend to increase the woods upward pressure on the barrel. Look for a noticable difference in your groups. If this causes them to shrink you can make a permanant shim in the fore-end with epoxy.</p><p></p><p>Really what your looking for is groups that print a round pattern rather than a string, once you get a round pattern then it is time to try and shrink that pattern.</p><p></p><p>If your gun is in fact walking bullets increasingly up to the top right and each shot goes further high right I would shoot about 15-20 in a row and see what happens when they hit the point that they no longer go high and right. They may get real loose and squirly or stop and start hitting a similar spot. If they continue for any lenght of time I would say barrel stress.</p><p></p><p>Have you tried multiple loads in the gun and they all do simmilar stringing?</p><p></p><p>another way to check the barrel stress is to shoot a 5 shot group letting the barrel cool for 20 minutes between each shot. If the same load that strings now stays relativly centered it could be stress in the barrel. I had a friend with a barrel that walked in the same manner as yours is in the above targets. he sent it off to cyrogenically treat and it did help to bring the stringing under control</p></blockquote><p></p>
[QUOTE="Coyboy, post: 538224, member: 3733"] first thing on any a-bolt is check to see that the front action screw is not bottoming out on the barrel thread tennon, unlike a remy or savage the a-bolts front screw goes into the front reciever ring under the barrel tennon. contact here is bad. same goes for the front scope base screw. If your good in those two spots it is time to experiment a little, two things to try. 1****Cut up a buisness card and stick it under the front reciever ring between the action and the stock. What this will do when tightened up is cause your barrel to point up slightly in the fore-end thus having the effect of more free float. Shoot the gun this way. look for a NOTICABLE change in group shape and size. If it changes greatly from your verticle string then yes you could correct the issue with bedding and free float. 2**** stack up buisness cards under the barrel in the tip of the forend to increase the woods upward pressure on the barrel. Look for a noticable difference in your groups. If this causes them to shrink you can make a permanant shim in the fore-end with epoxy. Really what your looking for is groups that print a round pattern rather than a string, once you get a round pattern then it is time to try and shrink that pattern. If your gun is in fact walking bullets increasingly up to the top right and each shot goes further high right I would shoot about 15-20 in a row and see what happens when they hit the point that they no longer go high and right. They may get real loose and squirly or stop and start hitting a similar spot. If they continue for any lenght of time I would say barrel stress. Have you tried multiple loads in the gun and they all do simmilar stringing? another way to check the barrel stress is to shoot a 5 shot group letting the barrel cool for 20 minutes between each shot. If the same load that strings now stays relativly centered it could be stress in the barrel. I had a friend with a barrel that walked in the same manner as yours is in the above targets. he sent it off to cyrogenically treat and it did help to bring the stringing under control [/QUOTE]
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