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Hunting
Long Range Hunting & Shooting
Win Mod.70 - Ream Chamber to Weatherby Caliber?
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<blockquote data-quote="AZShooter" data-source="post: 994515" data-attributes="member: 5219"><p>I can't see spending the money on rechambering the factory barrel for a bit more performance of perhaps 100 fps. You will have gunsmithing fees, new brass, and dies and maybe some scuffed up cerakote on the barrel when it gets removed. </p><p></p><p></p><p>I looked at the chamber specifications of the 7 Rem mag vs the 7mm Weatherby. It appears the factory barrel will have to be set back to totally clean up the 7 Rem Mag chamber. This means the old extractor slot must be removed and a new one machined. I don't know the exact amount but it appears that the setback will end up being at least 1/2". The gap in the barrel channel will become larger. </p><p></p><p></p><p>Then there is the matter that it isn't shooting that well. If it were me I would have the rifle inspected by a gunsmith or an avid shooter to see if a problem can be found. A borescope inspection of the barrel looking at the throat, lands and grooves and crown would be worthwhile.</p><p></p><p>I think if you are going to the trouble to rechamber it would be best to have a new custom barrel installed and have the rifle gone through at the same time. This would be the time to have the action blueprinted before headspace is established with the new chamber. </p><p></p><p>Time is going to be a factor if you are considering hunting with it this fall. Ordering a barrel and finding a gunsmith to do the work can often take weeks.</p><p></p><p>I am sure others can add to this discussion. Hope I helped some.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 994515, member: 5219"] I can't see spending the money on rechambering the factory barrel for a bit more performance of perhaps 100 fps. You will have gunsmithing fees, new brass, and dies and maybe some scuffed up cerakote on the barrel when it gets removed. I looked at the chamber specifications of the 7 Rem mag vs the 7mm Weatherby. It appears the factory barrel will have to be set back to totally clean up the 7 Rem Mag chamber. This means the old extractor slot must be removed and a new one machined. I don't know the exact amount but it appears that the setback will end up being at least 1/2". The gap in the barrel channel will become larger. Then there is the matter that it isn't shooting that well. If it were me I would have the rifle inspected by a gunsmith or an avid shooter to see if a problem can be found. A borescope inspection of the barrel looking at the throat, lands and grooves and crown would be worthwhile. I think if you are going to the trouble to rechamber it would be best to have a new custom barrel installed and have the rifle gone through at the same time. This would be the time to have the action blueprinted before headspace is established with the new chamber. Time is going to be a factor if you are considering hunting with it this fall. Ordering a barrel and finding a gunsmith to do the work can often take weeks. I am sure others can add to this discussion. Hope I helped some. [/QUOTE]
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Win Mod.70 - Ream Chamber to Weatherby Caliber?
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