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Long Range Hunting & Shooting
G1–G7: Nearly had a heart attack!
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<blockquote data-quote="ntsqd" data-source="post: 1650735" data-attributes="member: 93138"><p>I'm using Talley AL mounts on my ULHR project. Since I don't have a good way to measure the action curvature on the rear bridge I have not lapped them to the action. I have lapped the ring bores and with them being black anodized it's pretty clear where they would have made contact with the scope tube and where they wouldn't. I've since read an article on bedding the scope to the rings and that makes sense to do. I'm considering doing the same for the mounts to action fit.</p><p></p><p>As to the probability of moving the bores CL away from the as-machined CL, would you rather have that or a scope being bent by the mounts? I'll take the subtle change in optical CL orientation any day.</p><p></p><p>Carried to the extreme what is really needed is for the ring bores to be honed to final size with something like a Sunnen CK-10 in a fixture that aligns the desired optical CL (0 MOA, 15.3 MOA, etc.) with that of the action that they are attached to. Once honed to size on an action those mounts are forever matched to that action only.</p></blockquote><p></p>
[QUOTE="ntsqd, post: 1650735, member: 93138"] I'm using Talley AL mounts on my ULHR project. Since I don't have a good way to measure the action curvature on the rear bridge I have not lapped them to the action. I have lapped the ring bores and with them being black anodized it's pretty clear where they would have made contact with the scope tube and where they wouldn't. I've since read an article on bedding the scope to the rings and that makes sense to do. I'm considering doing the same for the mounts to action fit. As to the probability of moving the bores CL away from the as-machined CL, would you rather have that or a scope being bent by the mounts? I'll take the subtle change in optical CL orientation any day. Carried to the extreme what is really needed is for the ring bores to be honed to final size with something like a Sunnen CK-10 in a fixture that aligns the desired optical CL (0 MOA, 15.3 MOA, etc.) with that of the action that they are attached to. Once honed to size on an action those mounts are forever matched to that action only. [/QUOTE]
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G1–G7: Nearly had a heart attack!
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