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Long Range Hunting & Shooting
How many of you lap your scope rings?
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<blockquote data-quote="Pdvdh" data-source="post: 287824" data-attributes="member: 4191"><p>Only way I know of to find out how good a fit you have on any of your rifles with the scope base and lower ring halves installed would be to start the lapping process with a lapping bar and then look at the lower ring surface and see what % of contact is being made by the lapping bar. </p><p></p><p>I mounted scopes for many years without any lapping and I'm still alive. I know of no way to quantify how much lapping helps maintain scope consistency, or how much a lack of lapping hurts consistent performance. I'm convinced a lapped, full-contact fit is best. How bad of a fit you can get away with before you might start to see some inconsistencies? I couldn't pretend to know, and don't see how anyone could say. I know it takes so little time to lap, that I prefer not to risk this potential source of problems. But I'd still mount a scope and hunt with it if I had no way of lapping the scope rings in. At this point I'm pretty much set up to lap the rings and there's little reason not to. </p><p></p><p>A health analagy could be cancer or the flu. How does one ever know <strong>exactly</strong> what caused them? Or what combination of causes? Since I started lapping scope rings, I'm finding that most of them are off at least a little, and it generally doesn't take too much lapping to obtain 75% contact. I have had one set that was off quite a bit. I use Seekin's aluminum scope rings. I've never lapped a set of steel scope rings yet. I imagine steel would likely take a little more time and effort than my 7075 grade of aluminum.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 287824, member: 4191"] Only way I know of to find out how good a fit you have on any of your rifles with the scope base and lower ring halves installed would be to start the lapping process with a lapping bar and then look at the lower ring surface and see what % of contact is being made by the lapping bar. I mounted scopes for many years without any lapping and I'm still alive. I know of no way to quantify how much lapping helps maintain scope consistency, or how much a lack of lapping hurts consistent performance. I'm convinced a lapped, full-contact fit is best. How bad of a fit you can get away with before you might start to see some inconsistencies? I couldn't pretend to know, and don't see how anyone could say. I know it takes so little time to lap, that I prefer not to risk this potential source of problems. But I'd still mount a scope and hunt with it if I had no way of lapping the scope rings in. At this point I'm pretty much set up to lap the rings and there's little reason not to. A health analagy could be cancer or the flu. How does one ever know [B]exactly[/B] what caused them? Or what combination of causes? Since I started lapping scope rings, I'm finding that most of them are off at least a little, and it generally doesn't take too much lapping to obtain 75% contact. I have had one set that was off quite a bit. I use Seekin's aluminum scope rings. I've never lapped a set of steel scope rings yet. I imagine steel would likely take a little more time and effort than my 7075 grade of aluminum. [/QUOTE]
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How many of you lap your scope rings?
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