First thing I did was radius the top of the breech block. The factory knife edge catches on the mouth of the loaded round when its open and you drop a round in the channel cut in the breech block. It should be a smooth transition just like water flowing through a funnel. Makes for a quicker follow up shot. IMHO.
Radius a few other sharp edges found on the loading ramp area, may not improve feeding but sure keeps one's fingers from sufferin the odd cut.
Still trying to figure out a quick fix for that poor excuse they call a trigger.
I've got a "Martini Hagen" worked over Ruger #1 Stnls. Laminated stock,45/70 that is a work of art. Great checkering job, fully blueprinted action, incredible trigger, 19" barrel, Firesight front sight along with a NECG rear peep. Weighs in at a mere 6 lbs, 33" OAL. Very practical to pack and pushes out a 350gr bullet at just over 2500fps {ouch}!