I'm trying to load buckshot according to a recipe in the Lyman 5th edition shotshell manual. I have Winchester compression formed cases in 3", and the load is 12 pellets of 00 inside a Remington SP12 wad. I can't get the shot to stack up 3x3 unless I cut the petals off the wad. I wonder if that is what they intended? Also, I can get the same wad height without petals by stacking BPI BPGS gas seals, does that sound doable? I'm using Hornady 00 buck, and it seems pretty spherical and consistent.