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Lap or not to lap? |
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Mike VS
Optics GrassHopper Joined: December/15/2008 Location: PA. Status: Offline Points: 29 |
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Posted: March/09/2009 at 18:56 |
I'm using the Leupold quick release mounts and rings on my .300 WM. I noticed the rings have grooves in them. Should I still lap the rings if they have grooves?
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Relentless Pursuit
Optics Apprentice Joined: March/09/2009 Status: Offline Points: 61 |
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If concentric,leave things be. If not,do whatcha gotta do...............
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John Barsness
Optics Optimist Joined: January/27/2009 Status: Offline Points: 785 |
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Get a pair of Brownells alignment cylinders to check them out. These are 1" or 30mm aluminum cylinders with cones at one end. When you put them in the rings, the points of the cones indicate whether the rings are aligned.
Also, don't tighten them down a lot. Most rings are meant to be tightened to 15-20 inch-pounds of torque. If you don't have a torque screwdriver, this is as much as can be applied with the standard tiny Torx wrenches provided with most mounts these days, or using a screwdriver with only the thumb and first two fingers of your hand, with your hand ABOVE the screwdrive handle. Unless, of course, you are the Incredible Hulk.
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www.technika.nu
Optics Journeyman Joined: August/02/2005 Location: Sweden Status: Offline Points: 611 |
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Mostly actions are not true on the top, and consequently the rings are pointing in different directions. When you start lap rings and see how uneven the the rings are, you are wondering how much your other scopes are.......
Some factories are using belt sanders for final forming and finnishing of the actions.
So on one rifle the front ring is pointing forward, and on the other one it's pointing backwards.
Technika Edited by www.technika.nu - March/10/2009 at 01:43 |
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Urimaginaryfrnd
MODERATOR Resident Redneck Joined: June/20/2005 Location: Iowa Status: Offline Points: 14964 |
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Sure but dont over do it.
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"Always do the right thing, just because it is the right thing to do". Bobby Paul Doherty Texas Ranger |
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Relentless Pursuit
Optics Apprentice Joined: March/09/2009 Status: Offline Points: 61 |
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I like my stuff tight,as wondering POI do not interest me................
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Mike VS
Optics GrassHopper Joined: December/15/2008 Location: PA. Status: Offline Points: 29 |
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Hey guys thanks for the input. I put the rings on and then used the alignment cylinders and it was dead on to my surprise. John, you mention tightened to 15-20 inch-pounds. Do you also use a thread sealant like loctite?
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Clark
Optics Apprentice Joined: February/13/2004 Location: Near Seattle Status: Offline Points: 124 |
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I like loktite in the mount to receiver threads but the threads sometimes have oil.
The rear scope mount is easy to clean for the loktite to bond, the front 6-48 threads lead right to the 1-12 barrel threads. If the barrel is pulled to clean the front mount threads, clean the threads, put the barrel back on, and then install the mount with loktite. I like to put glass under the mounts so that there will be no scope bing and NO LAPPING. So: Pull the barrel clean the scope mount threads Put on the barrel [with an action wrench that would otherwise run into the mount] Glass the mounts while co planar and parrallel to the bore, so any center adjusted scope will be on the paper. When the glass hardens, Loktite the mount. |
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John Barsness
Optics Optimist Joined: January/27/2009 Status: Offline Points: 785 |
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In general I only use Loctite on base screws. There's no reason to use it on ring screws or inside the rings most of the time. In fact with rings that are aligned correctly, with screws tightened to 15-20 inch-pounds, I have had not had normal scopes slip even on .416's. By "normal," I mean up to 15 ounces or so.
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sholling
Optics Professional Joined: May/24/2008 Location: Hemet CA Status: Offline Points: 944 |
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Unless I'm using Burris Signature rings I always lap them. With the exception of those and DedNutz I have yet to see a set that didn't benefit from at least a bit of lapping.
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NRA, SAF, & CRPA life member
Member Madison Society & Revolutionary War Veteran Association (Project Appleseed) Old age and treachery will always overcome youth and skill. ;) |
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rifle looney
Optics Master Joined: November/21/2008 Status: Offline Points: 2553 |
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Lap dance I'm up for that......oooooohhhh wrong thread sorry disregard......
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3_tens
Optics Jedi Master Joined: January/08/2007 Location: Oklahoma Status: Offline Points: 7853 |
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James you are hanging with ED to much.
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Folks ain't got a sense of humor no more. They don't laugh they just get sore.
Need to follow the rules. Just hard to determine which set of rules to follow Now the rules have changed again. |
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rifle looney
Optics Master Joined: November/21/2008 Status: Offline Points: 2553 |
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sorry
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