If you are desperate to get it out, use a fine tip on an oxy-acedalyn torch and heat the head of the screw and the bottom tang. that might soften up some of the glass that contacts the metal and losen the screw. Downside to this is accidently burning the wood and ruining the blued finish on the scrw and tang.

Either that, clamp your marlin in the vise with wooden vise jaws and a rag and get a screw driver that fits the slot PERFECTLY. With enough elbow grease you might be able to free it.

 

Put a soldering iron to the tang screw and try turning the screw every so often.

The conduction on the screw to soldering iron should melt the bedding matierial before wood damage occurs, releasing the bond on the threads.

 

I had the same problem with a stock that had been broken and repaired with epoxy glue. I put a block of wood padded with a wash cloth right under the trigger plate to support it.Then with a tight fitting screw driver in the slot I tapped the screw with a hammer and tried to turn the screw every few taps. It took about ten tries and it came out hard but it did come out. the stock was also stuck, but a few light taps with a rubber mallet and it slid right off.

 

Thanks for the tips, fellas. That all sounds familiar.

I had a 'smith working on it and he tried all of the above. I'll just shoot it like it is and worry about getting it apart if something breaks inside. It shoots pretty good...I just had the itch to put the WWG HT in it.

No big deal really.

 

The soldering iron to the bottom of the tang screw will work often. Another tactic, and it may or may not be too long, is to place the rifle in a freezer for 6-8 hours, then immediately try the screwdriver. Cold will usually make the epoxy rather brittle, and the steel will contract and sometimes break the bond.

Good luck and keep us posted.....