I've looked quite a few places for what these letters stand for ...

Yeah, I know - Blind Magazine and Hinged Floorplate ... but what words are being substituted?

Also ... is it possible to modify - use a BDL barreled action in an ADL stock?

TIA

TBC

ADL stands for: (A)the (D)blind (L)magazine variety, and BDL stands for (B)hinged (D)floorplate (L)equipped variety. What was the other question? "Also ... is it possible to modify - use a BDL barreled action in an ADL stock?" Yes you can. I hope that helps...


Malm

Is it possible to tell if an action with floorplate metal was originally an ADL or BDL?

Birth controller, if you convert to ADL stock you will have to change the magazine box. The ADL is Longer and usually will hols an extra round on the 06 based cartridge. Good luck.

There would be now way of telling whether the rifle had been one or the other, if all of the components necessary were switched over.

The adl mag box has a 2.5deg. taper that runs front to back, which makes it a little taller in profile than the bdl, which does not have any taper at all.
The lack of taper in the mag box on an BDL is due to the fact that the factory bottom metal has the taper in it. Our bottom metal utilizes a straight connecting rail between the hinge and the trigger guard, hence we use the ADL mag box.
The other reason that we use this system is due to the fact that the ADL box allows the use of a small screw that will attach the mag box to the receiver. By doing this, you maintain a constant gap between the bottom metal and the mag box, if inletted properly. Sometimes it's necessary to grind off the bottom of the mag box on a belt sander to make sure that the mag box is not bottoming out on the bottom metal when your action screws are fully torqued into place.

The whole taper issue is the relative taper between the bottom of the stockline and the boreline. On Remingtons, it's 2.5deg., on Winchesters, it's 3.5deg.