This is not going to be some great sharing of knowledge or anything. Just how I bedded my scope rail.
First I took the scope, rings, and rail off the Handi. Then I cleaned the rail, barrel, and threads with Gun Scrubber. I could not believe all the crud under there.
I roughed up the bottom of RAIL with some 80 grit sandpaper and cleaned it with some Acetone. Next I applied a coat of paste wax (the kind made for floors)to the barrel and let it dry. When it dryed I buffed it lightly with a rag and layed on another coat. When I waxed I made sure that I went well beyond the area of the scope rail. Next I mounted the rail back on the barrel temporary like. Took some masking tape and put it all around where the edge of the rail would be if you were to you at it from above. Then the rail come back off and the rail got another wipe down with acetone.
Next I mixed up some JB Weld Exopy. I put it on the bottom of the rail. I carefully put a small bead on the back part of the rail. Just a thin layer here, staying back from the screw holes. Then I put a big glob on the front part of the rail. after that, I put the rail back on putting some grease on the screws. As the JB started to set up, I took an exacto knife blade and carefully trimed the excess epoxy. Then I pulled off the tape and used some Acetone on a rubber gloved finger to smooth it and give it a nice fillet.
Notice that there is a fine line all the way under the rail.
WDO