It's my first year of BP and I bought a used LK98 Knight 50 cal. I shot it and zeroed in the scope last week using APP powder for the first time. After about 10 shots or so it started some blow back. Not bad but is this normal. I wasn't swabing between shots, just shooting it. I didn't have time, cause of work, to clean the gun so now, do I shoot it one more time to clear out some fouling and then clean it or what? I know I should have cleaned it asap, but couldn't then and forgot about it a few days later. I'm not used to BP yet so I'm kinda dumb here. LOL. It has the red 209 jackets so I don't know how the blow back got by. Any help would be appreciated.
BBO