I shoot Citori's in .410, 28, 20 and 12 gauge at skeet. I use the two smaller ones primarily but from time to time when I think my shoulder needs some punishment for being bad I'll use the two larger ones.
Actually with the heavy weight and light 7/8 loads I use the 12 kicks no more than the 28 but still I love to shoot the little guns.
On mine I make sure to have grease on the hinge pin and the mating part to it both. I grease the metal of the fore end and the mating metal on the frame. That huge area more than any other will cause the gun to "feel stiff" if not properly lubed. Don't forget the parts on the fore end where the ejectors have metal to metal contact either. I lightly oil or grease the flat sides of the barrel that fit down into the frame as there is metal to metal contact there and I oil the sliding ejector parts. As I recall that's pretty much where I put the grease.
Just take a look and if you see any evidence at all that metal is rubbing metal make darn sure it has either grease or oil depending on just which place it is. The ejector pieces that move back and forth on that flat side I mentioned (Don't honestly know all the correct nomenclature) is the only place I put the oil, the rest gets grease.
