Originally Posted by Bobberfishin
My trigger was getting harder to pull & would bind every 3rd or 4th cylinder turn. Wasn't sure if it was the trigger, seemed like the ejector rod wasn't true & causing friction too.
It turned out to be some crud/debris had reached it's way inside the ejector rod (inside the cylinder area)
Had a gunsmith take apart, clean the ejector rod/cylinder & then smooth out any edges surrounding trigger. I figured since he had it apart might as well have the trigger cleaned up too.
See if the cylinder spins freely when open, it may help to find problem
I had the same problem with my GP100. Drizzled some Hoppes down the axis of the cylinder and spun it until it spun easily and then cleaned up the excess. This has not been a common problem and oiling the cylinder axis should not be normal maintenance; oil tends to attract crud.