I have a later model 999, it was nearly mint cond when I bought it, but it had some buildup in the forcing cone, which affected accuracy. It took some effort getting it out, until I did, I had some erratic accuracy and key holing. One day I was able to literally pick this chunk of coagulated lead/copper out using bore brushes, toothpicks wrapped with screen, etc.
Now it really shoots. The DA is typical heavy and stiff like most H&R guns, but a nice clean SA break. I treat it like a SA revolver, never use DA at all (... And I'm really a DA shooter).
Shown with my Taurus 94, my other 9 shooter.