I'm guessing the bolt isn't coming back far enough??? Most of the time the empty casing will still be in the chamber. This is with the same ammo it used to function fine with. Geco, Aguilla, RWS, all standard velocity $6 a box ammo.
I cleaned and lubed everything real good a couple times but that didn't fix the problem.
I'm kinda stumped at what it could be. It's like something is worn and isn't letting the bolt back fully anymore with standard velocity ammo, like it doesn't have enough oomph anymore. It works with high velocity Remington bulk ammo which I would rather not use since