You can tighten the spring loaded cylinder pin lock that has to be pressed to release the cylinder pin. The ends are screwed together and can be tightened by using the correct sized screwdrivers.
I have never liked the 2nd/3rd generation smokeless powder cylinder locking system, I like the original BP system of a screw thru the front of the frame. It may back out under recoil but in my experience it takes a while.
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"If there be treachery, let there be jehad!"