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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
custom rifle showing funky groups,.....HELP GUYS!!!!
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<blockquote data-quote="JustC" data-source="post: 27197" data-attributes="member: 817"><p>My 700 action has been trued, my lugs are lapped, I had a sako extractor installed due to the bolt thrust from the 300RUM with 220-240gr pills. The barrel is a 30" pacnor 1:10 finished at 1" and then a Vais break. The trigger is set at 8oz with a consistent break, the stock is an HS Precision (I wanted to shoot it before the MBR was due to arrive) and the recoil lug is hardened stainless at 2x factory thickness. The mounts and rings are Talley with 8x40 screws. the scope is a brand new NXS 8-32x56. All through break-in and even now, it will shoot anything from 169gr lapua to 200gr matchking and even partitions into one hole with varying powder measures,.....BUT the groups are erratic <img src="http://images/icons/mad.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> </p><p></p><p>It shoots,..lets say in one place, then the next bullet will place 3/4" away, then the next one or two bullets will cut the first hole. I can't find a correspondence in the cases,...and they have been benchrest prepped, by a benchrest competitor. </p><p></p><p>What do I check for, or what do I tell the gunsmith to look for? He stated he doesn't think it needs a barrel pad,......but I am thinking it does. The long heavy barrel will sink fairly easily into the barrel channel if given some pressure (not much) I know being that heavy, it probably isn't jumping enough to hit the channel, but I am wondering if it is somehow,.....harmonicaly challenged due to it's weight hanging from the receiver.</p><p></p><p>Please pick your brains gentlemen,..I am starting to become diseartened and really upset with it's performance for amount invested. I have only fired 40rnds, but the one hole groups shows me it is not the loads,...it is having some randomly occuring issue.</p></blockquote><p></p>
[QUOTE="JustC, post: 27197, member: 817"] My 700 action has been trued, my lugs are lapped, I had a sako extractor installed due to the bolt thrust from the 300RUM with 220-240gr pills. The barrel is a 30" pacnor 1:10 finished at 1" and then a Vais break. The trigger is set at 8oz with a consistent break, the stock is an HS Precision (I wanted to shoot it before the MBR was due to arrive) and the recoil lug is hardened stainless at 2x factory thickness. The mounts and rings are Talley with 8x40 screws. the scope is a brand new NXS 8-32x56. All through break-in and even now, it will shoot anything from 169gr lapua to 200gr matchking and even partitions into one hole with varying powder measures,.....BUT the groups are erratic [img]images/icons/mad.gif[/img] It shoots,..lets say in one place, then the next bullet will place 3/4" away, then the next one or two bullets will cut the first hole. I can't find a correspondence in the cases,...and they have been benchrest prepped, by a benchrest competitor. What do I check for, or what do I tell the gunsmith to look for? He stated he doesn't think it needs a barrel pad,......but I am thinking it does. The long heavy barrel will sink fairly easily into the barrel channel if given some pressure (not much) I know being that heavy, it probably isn't jumping enough to hit the channel, but I am wondering if it is somehow,.....harmonicaly challenged due to it's weight hanging from the receiver. Please pick your brains gentlemen,..I am starting to become diseartened and really upset with it's performance for amount invested. I have only fired 40rnds, but the one hole groups shows me it is not the loads,...it is having some randomly occuring issue. [/QUOTE]
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custom rifle showing funky groups,.....HELP GUYS!!!!
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