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How important is lapping? |
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STWSniper
Optics Apprentice Joined: April/05/2005 Location: Canada Status: Offline Points: 262 |
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Wow, that is a real eye opener. That would mean there are probably a whole lot of scopes out there that might not be mounted as good as they could be. |
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dilligaf
Optics Apprentice Joined: January/17/2005 Location: United States Status: Offline Points: 231 |
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Another good thing to do when installing mounts (prior to lapping the rings) is to bed the base. It very simple to do and doesnt take very long. If the receiver is even a hair uneven it will distort the base and tweak the rings out of alingment bedding the base will help to alleviate this distortion and can result in much less material needing to be removed from the rings.
Edited by dilligaf |
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Roy Finn
MODERATOR Steiner Junkie Joined: April/05/2004 Location: United States Status: Offline Points: 4856 |
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CheapTrick, how many of your rifles have you snt out to Accuracy Gunsmiths/Riflemiths for correction? |
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zaj56
Optics GrassHopper Joined: April/11/2005 Status: Offline Points: 11 |
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dilligaf......what is the proper procedure for bedding the base?(or bases) Thanks
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cheaptrick
MODERATOR Joined: September/27/2004 Location: South Carolina Status: Offline Points: 20844 |
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None. If I can't correct them myself, I sell them.
Are you disputing my earlier post? Edited by cheaptrick |
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If at first you don't secede...try..try again.
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dilligaf
Optics Apprentice Joined: January/17/2005 Location: United States Status: Offline Points: 231 |
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Sorry it took so long to get back to you I've been out of the net for a few days. If your receiver base mount holes are FUBAR take your rifle to a competent gunsmith for repair.
Its pretty easy. You will need: Epoxy a small level Pam non stick spray basic hand tools (As always insure that the weapon is unloaded!!!) mount the rifle in a vise or stand that will hold it securely and allow the rifle to be level and plumb. 1. Thread the base mount screws in and out of the receiver a few times. 2. Mount the base on the receiver and tighten the screws until the are SNUG not tight. Use a feeler gauge to see how off the receiver or base is. Remember to write down the largest gap size. Take the base back off the rifle. 3. Put a liberal coat of WD40, (I use Pam non stick cooking spray), grease or some guys use plastic wrap, (anything that will keep the epoxy fron stiking to the base) on the bottom of the base. 4. Mix the epoxy thick. Apply a liberal coat of epoxy where the base sits DO NOT get it in the screw holes on the receiver. (put some grease on the threads of the base mount screws).Make sure the epoxy is at leaste as high as the measurement you took earlier. 5. Mount the base and snug the screws down, check the base fornt to back, side to side, and corner to corner for it being level, tighten fron to bak screws until it is but do not tighten the screws al the way! Wipe off excess epoxywhen level. 6. Allow expoy to cure and tighten to torque (Badger recomends 21"lbs per screw on its base) or about as tight as yu can get it holding the small end of an allen wrench. 7. Mount and lap rings, mount scope, & zero weapon.
(If you using a 2 piece base its the method is still the same. Its a little more tricky but you can still do it at home. You will need to insure both bases are level and straight use a level, a laser, or anything you have to insure they are good to go before the epoxy is set up)
Edited by dilligaf |
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zaj56
Optics GrassHopper Joined: April/11/2005 Status: Offline Points: 11 |
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Thanks alot...very helpful....I do have a question though. Is the wd40 or Pam applied to the receiver or to the base? I would think that if the epoxy stuck to the rifle and not the base, it would be tough to ever switch bases in the future. Just curious...Thanks again
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dilligaf
Optics Apprentice Joined: January/17/2005 Location: United States Status: Offline Points: 231 |
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I apply the spray the base. On my personal rifles once a base is installed it is never removed (unless it gets broken). I only use Badger Ord bases & have never broken one. The purpose of the epoxy is to get the receiver top level for the base to be mounted on. I prefer the epoxy to adhear to the stronger surface so there will be no chance of it shifting. Never try to bed a base that is bent or distorted it defeats the purpose of the bedding job.
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