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Hunting
Long Range Hunting & Shooting
For Switch-Barrel Guns, How Do You Maintain Accurate Scope Zero?
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<blockquote data-quote="MagnumManiac" data-source="post: 1446024" data-attributes="member: 10755"><p>Unfortunately, your idiot proof solution is most likely not attainable.</p><p>Having had several switch barrel rifles over the years, none being a Savage with a nut, most being Rem 700's, Win Model 70's & a couple of BAT actions, all with precision machining would change POI between barrels due to barrel harmonics, not all loads or barrels are pointing in the same direction at bullet release.</p><p>As I stated, zeroing one barrel then tracking the other one(s) and noting how far off they are and recording that info, either by log book or noting it on your drop card, is the most accurate method.</p><p>I have played with Sauer switch barrels and even those shot differently between cals, it's just a fact of switch barrel life.</p><p></p><p>All I can advise it to have ALL mating services precisely machined, which essentially is to have the action blue printed and trued.</p><p>My rifles are so precise that I can 'spin on' a barrel and the witness marks align perfectly when the barrel nips up under it's own torque. I have no need to use a barrel vise and wrench, they never get loose throughout a match or when hunting. Holding the action between the knees and tightening by hand is sufficient for my use.</p><p></p><p>Cheers.</p><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1446024, member: 10755"] Unfortunately, your idiot proof solution is most likely not attainable. Having had several switch barrel rifles over the years, none being a Savage with a nut, most being Rem 700’s, Win Model 70’s & a couple of BAT actions, all with precision machining would change POI between barrels due to barrel harmonics, not all loads or barrels are pointing in the same direction at bullet release. As I stated, zeroing one barrel then tracking the other one(s) and noting how far off they are and recording that info, either by log book or noting it on your drop card, is the most accurate method. I have played with Sauer switch barrels and even those shot differently between cals, it’s just a fact of switch barrel life. All I can advise it to have ALL mating services precisely machined, which essentially is to have the action blue printed and trued. My rifles are so precise that I can ‘spin on’ a barrel and the witness marks align perfectly when the barrel nips up under it’s own torque. I have no need to use a barrel vise and wrench, they never get loose throughout a match or when hunting. Holding the action between the knees and tightening by hand is sufficient for my use. Cheers. ;) [/QUOTE]
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For Switch-Barrel Guns, How Do You Maintain Accurate Scope Zero?
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