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Long Range Hunting & Shooting
Winchester Model 70 Accuracy Issues - Help Needed
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<blockquote data-quote="MagnumManiac" data-source="post: 1433738" data-attributes="member: 10755"><p>This rifle sounds as if the barrel is not square to the action.</p><p>I had a USRC New Haven Model 70 that was off square so much I had to mill the rear Leupold base to get enough windage adjustment.</p><p>In the end, due to losing adjustment in the scope, I took it off, machined the barrel shoulder square to the bore and squared the action and re-chambered it. Accuracy improved slightly, it was sub MOA with handloads anyway and not particularly fussy with bullets.</p><p>Accuracy improved substantially when I put this rifle into a HS Precision Sporter stock and skim bedded it.</p><p>This was one of my most accurate rifles after all this. I sold it in 2014 and bought a Model 70 EW in the same cal, 338WM. Mine is also a Portuguese Model and I have no issue other than a tighter/shorter throat than I would prefer.</p><p></p><p>Cheers.</p><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1433738, member: 10755"] This rifle sounds as if the barrel is not square to the action. I had a USRC New Haven Model 70 that was off square so much I had to mill the rear Leupold base to get enough windage adjustment. In the end, due to losing adjustment in the scope, I took it off, machined the barrel shoulder square to the bore and squared the action and re-chambered it. Accuracy improved slightly, it was sub MOA with handloads anyway and not particularly fussy with bullets. Accuracy improved substantially when I put this rifle into a HS Precision Sporter stock and skim bedded it. This was one of my most accurate rifles after all this. I sold it in 2014 and bought a Model 70 EW in the same cal, 338WM. Mine is also a Portuguese Model and I have no issue other than a tighter/shorter throat than I would prefer. Cheers. :) [/QUOTE]
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Winchester Model 70 Accuracy Issues - Help Needed
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