when you are holding the gun on its side, left side DOWN< place the cylinder so it "lays" in the window ,against the far left ( downward side) and sometimes if you slightly turn the cylinder left or right and hear a "click" then , the pin can be pushed in from the front, yes at times you need to wiggle the cylinder slightly at the same time so it all 'aligns' and the pin goes into the center of the cylinder, DO NOT force the pin in , the slight wiggle and the holes will all align, and pin enter freely.......practice and yes helps if there is a bit of gun oil on the pin to help smooth things out...it is far easier to actually do or to show than to type it out in words.........but I been doing this since the late 1950s.......... 8) :roll: :wink:
the real trick is with the "shouldered" pin on the Blackhawks, so you do NOT turn the curve away from the bottom of the barrel and "bind" the pin against the barrel, jamming it in place, scratching the barrel ........