I have been following the posts on the forum on the Lee mold, and finally purchased one. I am having problems getting it to shoot well. My slug gun is an Ithica 37 with a rifled barrel with a .727 groove diameter. I am not after maximum velocity, as the light weight of this gun, the recoil is brutal. 1300 fps range is good, as shots on deer here are seldom over 50-60 yards. What is the accuracy potential of this slug? I moved up my testing to 25 yards, and am lucky to get a 5 shot 4 inch group, often 3 shots touching with 2 fliers, often keyholes. I have 3 kinds of suitable wads on hand. AA red, AA white, and PC 1oz purple. I also have a box of 20ga 1/2" fiber wads on hand for spacer use. I don't know how they stack up vs the nitro cards for this application. The powders I have used so far, have been 40gr of Blue Dot, 30gr of WSF and 22gr of Red Dot. I have tried 3 different ways, cutting the petals down, adding the 20ga filler wad underneath the slug in an unaltered wad, and just shooting the slug alone in an unaltered shotcup. The only time the petals did not get shredded was using the AA white wad, with the 1/2" filler wad under the slug. My Lee slug casts at .685 diameter and weighs 455 gr. I did notice that the petal thickness is .025 on the AA white wad, .030 on the AA red and .028 on the PC purple wad. Possibly the petal thickness is a factor. Even using the AA white wad, the total diameter is .025 + .025 + .685 = .735, making things a tight fit. Here are a few other things I noticed. There is no key drive mark on the wads with the filler wad. All other wads have the mark, and occasionally wads were recovered on the other side of the target in the dirt, leading me to believe some wads never seperated from the slug. I have been using AA hulls in my tests. Any info would be appreciated.