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CamoToe1 12-19-2013 12:23 AM

Bedding material for one piece base
 
Recently ordered a Remington 700 SPS AAC SD in .308 from my lgs. I should have it by early January. I'd like to have my scope, rings and base all ready for when it shows up. The base I chose is a Weaver 20 MOA extended rail and Burris XTR rings. Scope I'm looking at is the 3.5-10x50 vortex viper.

From what I've read most of these weaver rails require bedding under the rear attachment surface. My question is for anyone that has bedded their own base before. There are a lot of instructions online that use JB Weld as the bedding compound. Has anyone tried it? Should I use something else?

Thanks in advance for any tips or suggestions.

CamoToe1 12-22-2013 01:12 AM

4 Attachment(s)
...Hmmm, not a single reply. "Hammer Condoms" got 4 replies, but bedding a sight base 0. LOL!

Well, here's my progress thus far.

Attachment 130305
Materials

Attachment 130306
Definitely some play under the rear of the base. 3 -4 sheets of paper fit under the rear with the front screws torqued down.

Attachment 130307
Daylight under the rear portion of the base.

Attachment 130308
Next I coated the rear mating surface with a release agent. I used two layers of Kiwi shoe polish. I then buffed it off before applying the bedding.

CamoToe1 12-22-2013 01:16 AM

4 Attachment(s)
Attachment 130310
Here I scuffed the rear of the base with 180 grit sandpaper. This will give the JB Weld something to bite to.

Attachment 130311
Mixed equal parts of JB Weld steel epoxy until completely uniform in color.

Attachment 130312
I then applied an even coat of epoxy to the rear of the base.

CamoToe1 12-22-2013 01:22 AM

3 Attachment(s)
Attachment 130314
Here is how it looks after wiping the excess epoxy away with rem oil saturated qtips.

Attachment 130316
Another shot.

Attachment 130317
Gonna let it set up for 4-6 hours and then drill the JB weld out of the rear mounting holes while it's still somewhat soft. It'll then need to cure for another 18-20 hours before I can torque the base down and install the rings.

LIBERTY2 12-22-2013 10:09 AM

Looks like a good solid set up. Now don't forget to lap the rings and you;ll have a properly set up scope.

CamoToe1 12-22-2013 03:07 PM

Bedding material for one piece base
 
2 Attachment(s)
Attachment 130391
After 8 hours I pulled the mounting screws. It took a light tap with a hammer, but broke free easily. The surface is smooth and free of voids.

Attachment 130392
Reinstalled the screws and will let it cure out for another 12-15 hours.

It looks like my Burris XTR low rings are just a hair too low for my old scope's 50mm objective. I may wait to see how my new scope fits before sending these back. I would prefer it to be as close to the bore as possible.

Is ring lapping absolutely necessary?

duddie10 12-22-2013 03:16 PM

Quote:

Originally Posted by CamoToe1 (Post 1464725)
Attachment 130391
After 8 hours I pulled the mounting screws. It took a light tap with a hammer, put broke free easily. The surface is smooth and free of voids.

Attachment 130392
Reinstalled the screws and will let it cure out for another 12-15 hours.

It looks like my Burris XTR low rings are just a hair too low for my old scope's 50mm objective. I may wait to see how my new scope fits before sending these back. I would prefer it to be as close to the bore as possible.

Is ring lapping absolutely necessary?

You lap the rings to make sure each ri g is true to the other one. Its keeps from tweaking your scope tube. And putting to much stress on the scopes internals. It also provides a better point of contact between the rings and the scope. Takes out high spots and any uneven surfaces. I would if your running the viper.

Sent from my SPH-D710 using Firearms Talk mobile app

tomgodd 12-24-2013 02:11 AM

1 Attachment(s)
Great job! I done this very same thing to my Remington model 788 when I installed a EGW mount. No problems so far.

Sent from my ADR6410LRA using Firearms Talk mobile app

CamoToe1 12-25-2013 05:08 AM

1 Attachment(s)
Quote:

Originally Posted by tomgodd (Post 1465843)
Great job! I done this very same thing to my Remington model 788 when I installed a EGW mount. No problems so far.

Sent from my ADR6410LRA using Firearms Talk mobile app


Thanks! Here it is with the scope mounted.Attachment 130674


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