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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Do you lap the whole ring or just bottom half only
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<blockquote data-quote="gslinger" data-source="post: 2384118" data-attributes="member: 47393"><p>Son in law just bought a new tikka lightwieght in 7mm rem mag.</p><p>He bought a vortex pst 4-16x50 gen 2.He got Tally 1 piece base and ring set.</p><p>When I checked with alignment pins,they were way off.</p><p>He set up lapping bar and put the top half of the rings back on.</p><p>I said I think that's wrong.You should only lap the bottom half of rings.</p><p>We checked on you tube and all the video's showed them lapping with the top half on.</p><p>The way I understood it, was the top half has screws and a hole, The hole is bigger than the screw and makes it loose and it will self center the scope on the bottom half of the ring.</p><p>The top half does't need to be lapped. It has play in it. If you lap the top half too much. The rings may become to loose and there will be no gap between the rings to lock the scope in the rings, before the rings line up.</p><p>If the bottom half of the rings are not lined up, It's the top half that centers the scope and puts stress on the scope tube.</p><p></p><p>The rings are made to fit the scope tube perfectly. They will be 30mm rings on 30mm tube.</p><p>If you lap only the bottom.It will not be a 30mm anymore.</p><p>The top half will still be 30mm and fit the scope tube like a glove.It will still center the scope tube to the bottom of the enlarged ring.</p><p>If the bottom halfs are lined up. Then the top half locks the scope in tight, with lots of contact and no stress on the tube. Because</p><p>the top half is untouched and still 30mm.</p><p></p><p>We decided to lap only the bottom.</p><p>We reversed the alignment bars and put a scope ring on one bar and tightened them to specs.</p><p>The ring wouldn't pass from one bar to the other.</p><p>We lapped the bottom And set it up again. This time the ring passed with some force .Lapped again and this time the ring passed with a small bump. We lapped again and the ring passed easily'</p><p>Tighten rings to spec,and there was still a good gap between rings</p><p></p><p>Do you lap the whole ring or just the bottom half</p></blockquote><p></p>
[QUOTE="gslinger, post: 2384118, member: 47393"] Son in law just bought a new tikka lightwieght in 7mm rem mag. He bought a vortex pst 4-16x50 gen 2.He got Tally 1 piece base and ring set. When I checked with alignment pins,they were way off. He set up lapping bar and put the top half of the rings back on. I said I think that's wrong.You should only lap the bottom half of rings. We checked on you tube and all the video's showed them lapping with the top half on. The way I understood it, was the top half has screws and a hole, The hole is bigger than the screw and makes it loose and it will self center the scope on the bottom half of the ring. The top half does't need to be lapped. It has play in it. If you lap the top half too much. The rings may become to loose and there will be no gap between the rings to lock the scope in the rings, before the rings line up. If the bottom half of the rings are not lined up, It's the top half that centers the scope and puts stress on the scope tube. The rings are made to fit the scope tube perfectly. They will be 30mm rings on 30mm tube. If you lap only the bottom.It will not be a 30mm anymore. The top half will still be 30mm and fit the scope tube like a glove.It will still center the scope tube to the bottom of the enlarged ring. If the bottom halfs are lined up. Then the top half locks the scope in tight, with lots of contact and no stress on the tube. Because the top half is untouched and still 30mm. We decided to lap only the bottom. We reversed the alignment bars and put a scope ring on one bar and tightened them to specs. The ring wouldn't pass from one bar to the other. We lapped the bottom And set it up again. This time the ring passed with some force .Lapped again and this time the ring passed with a small bump. We lapped again and the ring passed easily' Tighten rings to spec,and there was still a good gap between rings Do you lap the whole ring or just the bottom half [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Do you lap the whole ring or just bottom half only
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