My LWH won't group well at all. 2+ inches three shots 100 yds. and inconsistent. Started out with Burris mounts and Signature rings, Trijicon Accupoint. Broke the barrel in very carefully. Put a number of different kinds of factory ammo thru it 120gr 140 gr.. Thought maybe I was struggling with the Accupoint reticle, so I changed to DNZ one piece and Leupold VX3 2.5x8x36. Basically the same results. I've checked scope mount and rings for tightness and torque. I found one of the action screws backing out a little after removing the stock to adjust the trigger pull. I researched torquing the action screws and tried that with no real improvement. Cold barrel was better for sure. Probably 200+ rounds thru the gun. Using a Lead Sled. Part of the inconsistency could be me, but I can shoot my T/C muzzleloader under an inch and my Marlin .30-30 ( with the Trijicon) around an inch with the Sled. Is it ok to use blue thread locker on the action screws?:

Just about ready to give up... Any suggestions would be be appreciated.....