I have a Rem 511 scoremaster, I'd like to know if I can re-work the trigger mechanism to safely reduce the trigger pull weight. Can anyone provide any guidance?
Yes but you must be very careful as these are only surface hardened in the sear area. if you take too much off the trigger you will cause it to wear really fast.
What you need to do is remove the trigger from the receiver and look at it. noting burs and chips. take a knife hone that is fine grit and lightly stone the areas that need to be cleaned up. your not going to get a 3 oz trigger from this but it will help clean it up a lot. If you can't remove the damage from the trigger you may need to order a new one.
As Captmurdoc30 said, you are not likely to get a good trigger pull from the trigger mechanism on a 511, there are too many pins and levers and the design is not really suitable for a fine trigger.
Ok Let me ask you another question if I can, I completely stripped down the gun to clean it probably after about 50 yrs.Can you tell me if the hole in the trigger/sear assembly was originally elongated?
The Rem511 trigger is a toggle that goes a little over top dead center to interfere with the firing pin sear.
If any material is removed, the toggle goes further from center, and is harder to pull down.
Further, if any material is removed, there may not be much spring pushing up on the toggle because of the slop in the toggle connecting pin. This causes the bolt not to cock.
What does it all mean?
Removing material may make the trigger harder to pull, and the rifle will not always cock.
So I installed spring to push up on the toggle.
It seems I am not the first person to do that.