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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
How NOT to lap to much
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<blockquote data-quote="ntsqd" data-source="post: 2242215" data-attributes="member: 93138"><p>When the so-called "alignment bars" that have pointed ends are used to check alignment they can look like the alignment is perfect and be wrong. Worst is that you have no way of knowing that they're giving you a false positive. I do not trust them. If they hadn't come in the first lapping kit that I bought I wouldn't even own any. As it is they reside in the lathe remnants bin to be used as blank material for other projects.</p><p></p><p>The best way that I've found to check ring alignment is to lightly lap them. Read the resulting wear pattern, it will tell you what is going on.</p><p></p><p>Easiest way that I found to not over-lap is to throw away the compound that comes in the Wheeler kit. It is far, far too coarse of a grit. Use Clover brand lapping compound in the 600-800 grit range. It takes a while to remove much material and you'll likely tire of the job before you can go too far, BUT it does the job with the minimum material removal needed and leave a smooth finish.</p><p></p><p>The only instance where I would not toss the Wheeler compound would if I were using the kit to lap the rings just enough to give them some "tooth" for the bedding material to grab onto. Then the coarse grit works in your favor. But only then.</p></blockquote><p></p>
[QUOTE="ntsqd, post: 2242215, member: 93138"] When the so-called "alignment bars" that have pointed ends are used to check alignment they can look like the alignment is perfect and be wrong. Worst is that you have no way of knowing that they're giving you a false positive. I do not trust them. If they hadn't come in the first lapping kit that I bought I wouldn't even own any. As it is they reside in the lathe remnants bin to be used as blank material for other projects. The best way that I've found to check ring alignment is to lightly lap them. Read the resulting wear pattern, it will tell you what is going on. Easiest way that I found to not over-lap is to throw away the compound that comes in the Wheeler kit. It is far, far too coarse of a grit. Use Clover brand lapping compound in the 600-800 grit range. It takes a while to remove much material and you'll likely tire of the job before you can go too far, BUT it does the job with the minimum material removal needed and leave a smooth finish. The only instance where I would not toss the Wheeler compound would if I were using the kit to lap the rings just enough to give them some "tooth" for the bedding material to grab onto. Then the coarse grit works in your favor. But only then. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
How NOT to lap to much
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