I use hammer spurs from Mike Bellm, They are made of aluminum and have no effect on the operation of the rifle. I went to laminated forearm and stock , Pillared bedded the forearm so no part of the barrels nor frame contact the wood. I replaced hinge pins with 1X poins fron Bellm, Made a world of difference in barrel to frame match up .
Did my own trigger job with springs and instruction from Mike Bellm. (
www.bellmtcs.com)
My barrels will shoot under 3/4" for 5 shots all day long, if I do my part!