I think you will be happy with the Shockwaves. Either 250's or 200's. My best load to date for my Enocre 209x50 is 130grains of Pyrodex pellets, two 50's and one 30, and a 200grain Shockwave ignited by a Winchester 209 primer. I can consistantly get .5-1.5 groups at 100 yards using a bench and solid rest with sandbags. You really need a good rest to find a load or you will be chasing your tail. Listen to all the good advice here, load each shot consitantly, swab between shots and relax. If you start getting frustrated, take a break and just think about what is going on. Writing down info on each shot is helpful also. Take your time and realize that finding a load for a ML may take days or weeks. Good luck.