I would agree that the win AA wads don't provide a good seal. They are mostly just taking up space and my real seal is being created by the ox-yoke wad. They are cut for use in brass hulls so are very snug in the cheddite hull. I think I will try a hard card wad with two ox-yokes on top this next go and see what happens.

In regards to beeswax the stuff I am getting is hard as h$ll when dry and really adheres to the plastic hulls. During this springs bear hunt I packed the same six for three weeks. They endured rain snow and mud and got no special treatment from me. I shot them off this weekend as I won't be using that load any longer. We hunt Blacks from stands and max shot would have been 25 yards so was ok with regulation for that hunt. I have tried the roll crimps and see no reason at this point to go back. Accuracy was poor, pressures appeared to be slightly higher and it's a slow process compared to waxing. I also believe the wax helps to lubricate ball. I must admit though that in 100 degree weather things may start to soften and cause problems. I'll work on that.

I follow another forum that has a dedicated shotgun slug casting section. Case head measurements are generally accepted there as a tool for monitoring loads. You will see a .003"' jump with calipers long before your eyes or other senses tell you something is wrong.