I am new at shotshell reloading, so I am reaching for help. My goal is to shoot the Lee 7/8 slug at 1100 to 1200 fps accurately enough to keep them on a regularly sized piece of paper at 50 yards. Is this possible ? I know what don't work is almost as valuable as what does work, so I will post what I have tried. The first load was Fiocchi target hulls with a Cheddite primer, Claybuster copy of the Federal 12S0 wad,20 grains of Clays, 3 card board disc 5/8" diameter cut from soda 12 pack cartons, and then roll crimped with an old antique roll crimper.Load seemed very inconsistent with shots going high. Out of 5 shots only 3 hit the top of a 24x15 box, 10" above point of aim fired from a Mossberg 500 with 18.5" cylinder bore barrel.
Second load was the same except 17.5 grains of Titewad was used and shells were crimped in a MEC 600 JR.
Third load was 22 grains of International, Nobel Sport primer and Rio hulls. Again both of these loads inconsistent in sound, recoil and accuracy.
I have a bunch of hulls picked of from the local sporting clays range. They are mostly the Fiocchi target, Rio, Estate, Winchester Universal, and Herters Cheddite style plastic base.I have Cheddite and Nobel Sport primers which seem to fit these shells. I have Titewad, Titegroup, International, Universal, Bullseye, Unique, Red Dot,HS-6 andHerco powders