Remove the stock halfway. Set the gun on a table upside down. With one hand
push down on the forend. With the other hand push down on the stock until
the spring tube bends. Put a small piece of wood between the receiver and
the metal stock plate so when you put the stock back on, the tube doesn't
bend back. Tighten the stock nut and washers. Put the pad back on. You may have
to do this a few times to get the exact drop you want.
When you have the stock just the way you want it, remove the stock and file or sand an angle into the neck of the stock and inlet the the edge to mate with
the receiver at the new angle you have created. Done.
Keep in mind that you will also raise your drop @ comb doing it that way, and if you go overboard (I would think you'd need quite a bit of bend to raise the heel 1/2") and snap the tube off, it will not be cheap to fix. That would also not work on an 870.
You could also look into adding an adjustable comb probably with an aftermarket comb piece to make it fit how you want. There would be less risk of breaking something with this process than with bending stuff that is not intended to be bent.
Thank you for your answers. I have never gotten into Remingtons before and I'm trying to learn. On the 1100, what does the Action Spring Tube screw into? Is it attached directly to the receiver or does it screw into something else that is attached to the receiver? I can see how you would bend that tube and then re-inlet the tenon at the neck. That makes sense. Is there an easy way that the receiver can be re-machined or rethreaded to receive the Action Spring Tube at a slightly different angle?
On the 870, does the Receiver Stud screw directly into the receiver or does it screw into something else that screws into the receiver like a cross pin or something? If the Receiver Stud screws directly into the receiver and there is no adjustability, could the threaded hole be plugged and re-tapped to receive the Stud at a slightly more upright angle?
The 1100 action spring tube is welded to the reciever. I bent mine to make my gun shoot higher and it did work but after several bendings....it broke off and I had Pat Laib weld it back on. I didn't bother to re-inlet the stock and I think that's why it didn't stay bent the way I wanted it to.
I know it COULD break but I've done dozens of them, and know dozens more
done by guys who did the same with their guns, and there was not one case of a
broken spring tube or weld, or problem with the recoil spring itself. We did this because we all shot high stocks for skeet, and while you could get
a trap stock for the 12 gauge, that was the only way to raise the stock
on the small gauges.
If you don't want to inlet the stock, leave the wood shim in and shoot it that