Yes I have three lk 93's I have found that because of the one in twenty eight twist and the short 22 inch barrel that it is a waste of time to go over a hundred grains of powder. I have further found if you will stay around 85 to 90 grains along with a good quality bullet your gun will group just fine. I like RS pistol powder or three f in the older plunger guns. I would stay with a 250 grain barns or a 240 grain XTP with a green crush rib sabot from harvester will really perform. I shoot 80 grains of 3F Swiss in my MK-85 and it shoots super tight groups. Good luck shoot straight, often and always shoot a knight