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<blockquote data-quote="royinidaho" data-source="post: 376229" data-attributes="member: 2011"><p>OK......now ya got my attention.......</p><p></p><p>RE: the Scope base......</p><p></p><p>For 40 years and still going the standard Redfield type base w/the rear windage adjustment screws have been mounted on a 270 Win.</p><p></p><p>Move up to 338 RUM. Same mounts. Maybe 100 shots and the rinky dink windage screws came apart. Can't recall for sure but I think the little "tab" on the ring base let go.</p><p></p><p>Immediately installed a 'key'd' (can't recall the proper terminology) rear base an bought a set of rings to go with. Seems good so far.</p><p></p><p>Next is my 270 AM. Accuracy/repeatability went to pot. 800 rounds. Same 'trusty' Redfield/Leuy one piece base w/windage screws. Took the rifle apart. All screws tight except one windage screw. Tightened it and consistency greatly improved but not to where it was.</p><p></p><p>Further inspection shows a distinct silver ring cut into the scope base 'tab'.</p><p></p><p>I think that the screw is actuall tightening against the base and leaving a few/part thou of rear scope movement.</p><p></p><p>Now......What's the story on that base in the pic...........?</p><p></p><p>One can only hope that 'all' 700s/721s are drilled the same.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /></p></blockquote><p></p>
[QUOTE="royinidaho, post: 376229, member: 2011"] OK......now ya got my attention....... RE: the Scope base...... For 40 years and still going the standard Redfield type base w/the rear windage adjustment screws have been mounted on a 270 Win. Move up to 338 RUM. Same mounts. Maybe 100 shots and the rinky dink windage screws came apart. Can't recall for sure but I think the little "tab" on the ring base let go. Immediately installed a 'key'd' (can't recall the proper terminology) rear base an bought a set of rings to go with. Seems good so far. Next is my 270 AM. Accuracy/repeatability went to pot. 800 rounds. Same 'trusty' Redfield/Leuy one piece base w/windage screws. Took the rifle apart. All screws tight except one windage screw. Tightened it and consistency greatly improved but not to where it was. Further inspection shows a distinct silver ring cut into the scope base 'tab'. I think that the screw is actuall tightening against the base and leaving a few/part thou of rear scope movement. Now......What's the story on that base in the pic...........? One can only hope that 'all' 700s/721s are drilled the same.:rolleyes: [/QUOTE]
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