Most new O/U's will be a little stiff. Be sure to properly lubricate the joints to avoid galling.
I've tried a Cynergy and liked it a lot. Not sure why your gun is "locking up" - do you think the firing pins are sticking in the primers?
I've tried a Cynergy and liked it a lot. Not sure why your gun is "locking up" - do you think the firing pins are sticking in the primers?