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7mm accuracy problems
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<blockquote data-quote="Fiftydriver" data-source="post: 847871" data-attributes="member: 10"><p>When I started out in this business I got pretty ego bound and through I could make any rifle on the planet shoot into 1/2 moa groups after rebuilding. At that time I had built a couple hundred Rem 700s with only a couple problems which were both barrel related.</p><p> </p><p>I had even rebuilt several Wby MkV receivers and a lot of Savage M110s. All had shot lights out.</p><p> </p><p>Then I had a customer bring in a Wby MkV in 300 Wby that was shooting about 2 moa with anything he put through it. In my relatively inexperienced state of mind, I agreed to do the build and guaranteed a 1/2 moa rifle at the end of the adventure.</p><p> </p><p>I can tell you After rebuilding that rifle with a heavy #7 Lilja, 28" SS, 1-10 twist barrel, McMillan A-5 tactical stock, Holland QD muzzle brake and even did what I could to accurize the receiver which was recut the receiver threads perfect to the axis of the receiver and truing the bolt face on the bolt and lapping the bolt lugs into as near 100% contact as possible. </p><p> </p><p>Still, the best group I got out of the rifle was 1 1/3 moa and I will admit, I put at least $300 in componants through that rifle testing all the best accuracy bullets out there, a half dozen powders and every magnum and standard primer made in the US. Not only that, I tried every brand of brass I could find. NOTHING made a difference. Well I should not say that, some groups were worse. Twist rate was verified, bore was perfectly dimensioned, everything was perfect on the rifle from a mechanical stand point. Played with receiver torque levels, nothing made any difference.</p><p> </p><p>In that case, I gave the customer some cash back simply because I could not get his rifle to shoot to my standards.</p><p> </p><p>In my time doing this, I have seen 5 Wby MkVs that behaved this same way and around 40 that shot just fine to my accuracy standards. For that reason I will not offer an accuracy guarantee on them.</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 847871, member: 10"] When I started out in this business I got pretty ego bound and through I could make any rifle on the planet shoot into 1/2 moa groups after rebuilding. At that time I had built a couple hundred Rem 700s with only a couple problems which were both barrel related. I had even rebuilt several Wby MkV receivers and a lot of Savage M110s. All had shot lights out. Then I had a customer bring in a Wby MkV in 300 Wby that was shooting about 2 moa with anything he put through it. In my relatively inexperienced state of mind, I agreed to do the build and guaranteed a 1/2 moa rifle at the end of the adventure. I can tell you After rebuilding that rifle with a heavy #7 Lilja, 28" SS, 1-10 twist barrel, McMillan A-5 tactical stock, Holland QD muzzle brake and even did what I could to accurize the receiver which was recut the receiver threads perfect to the axis of the receiver and truing the bolt face on the bolt and lapping the bolt lugs into as near 100% contact as possible. Still, the best group I got out of the rifle was 1 1/3 moa and I will admit, I put at least $300 in componants through that rifle testing all the best accuracy bullets out there, a half dozen powders and every magnum and standard primer made in the US. Not only that, I tried every brand of brass I could find. NOTHING made a difference. Well I should not say that, some groups were worse. Twist rate was verified, bore was perfectly dimensioned, everything was perfect on the rifle from a mechanical stand point. Played with receiver torque levels, nothing made any difference. In that case, I gave the customer some cash back simply because I could not get his rifle to shoot to my standards. In my time doing this, I have seen 5 Wby MkVs that behaved this same way and around 40 that shot just fine to my accuracy standards. For that reason I will not offer an accuracy guarantee on them. [/QUOTE]
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