FYI Remington 20ga scope mount.

[Ranman]

I bought a Mueller for my 870 20ga.  It does not have mounting hole.  I checked local gunsmiths and they wanted $25 per hole to drill and tap, so I tried a B-square from BP that was on sale for $25.  Sat way too high.  Had to take cheek completely off stock.  Talked to Remington, they said a scope mount for a Remington 7400, or 7600 would fit the contour of the 870 20ga.  Warne part # A995M fits perfect.  Ordered a drill and tap set from MidwayUSA, $5.99.  Screws are 8-40.  With the Mueller down on the receiver, cheek weld is fine.  Waiting on drill and tap set, will post pic when complete.  Hope this is helpful.
Randy

[old frank]

Good Luck, Go slow and be careful.

The two Gunsmith's I talked to said $10 per hole, so $25 per hole is pretty high.

I agree if it is a dedicated turkey or deer shotgun, drilling and tapping is probably the best way to go.

[ltprod]

Any luck??

[FullChoke]

I put the same site on the same gun the same way.

Mark carefully and check twice. Use a drill press to keep things square and chuck up the tap in the drill press. Use a good cutting oil and turn/back off the chuck by hand while putting downward pressure with the drill press. Take your time and you will find it is quite doable.

FC