I shot my Ruger 22/45 last week and it FTF and FTE numerous times with old Winchester Wildcat ammo. I cleaned the gun per the instruction manual and shot it again yesterday with two year old Remington "Golden Bullet" ammo from a 550 round bonus pack. The first clip FTF about three times and FTE more than that. The second clip was worse than that so I parked it. Several times the slide didn't close all the way. One round FTF through three cyclings, with the appropriate "cook off" time between each cycle. Not pleasant! I have not shot the gun in probably five years and never did shoot it much back then, but I seem to remember some of the same problems, which seems to me the reason I haven't shot it much in the last five years. I am going to try some very fresh CCI ammo this week and see if it functions properly. Any other suggestions? Thanks.