I have Trigger Shoes on both & had them set at 1 1/2 lbs plus I had installed on both the extra strong fast spring in the bolt, I believe the man who did it was /is named David -- don't recall his last name-- was doing that for lots of years. He was a Shooting Champion, wow did that make a difference in super fast lock time !! As you can tell, I like the M- 77's & everything about them. You are correct-- the trigger pull is a problem quite often, I think the factory setting was 3 1/2 lbs, way too heavy for my liking anyway.
That was many years ago getting those triggers & lock times set better. They are both precision killers & sniper types for me & that .243 is still a tack driver & is my go to rifle on varmints & deer & antelope. Anything bigger I go to the .284 & 140 gr Noslers. ? Jerry Gold. ?