This is actually more like Part 3 (b). I’m going to go over some incidental improvements that I’ve added to the rifle in the course of accurizing. First, the Ruger BX-Trigger:

Not expensive nor super top of the line, but it decreased trigger pull from 3.5 lbs to 2.5 lbs, a nice pull weight for accuracy. Also, notice the red pin. That is a neoprene-like substance that replaces the aluminum recoil stop in the back of the receiver. It is a more forgiving material that absorbs some of the recoil of the bolt flying back in the receiver. See installed below:

Next, haven’t you always been told to clean the barrel from the chamber to the muzzle and not the other way around? Starting at the muzzle can damage the crown and affect the gas pattern and bullet exit and thus, accuracy. So how do you do it on the Ruger without removing the barrel from the receiver? There is an answer in the form of a jig:



Above, reverse order because I am still a WordPress newb and/or impatient.
Other upgrades:

Did I mention that I want a new barrel? That will have to wait until Part 5.😢