This is my load with the RST hulls Travis, and I agree about 5 reloads is the max.
2 1/2 Cheddite hull, 14gr Green Dot, 3/4 oz. shot., BPI SG 16 Sporting wads, and Cheddite Clerinox 209 primers.
Pressure is less than 5500 psi and a buddy chronographed the load at 1185 fps. The RST 3/4 oz. load is listed at only 1100 fps.
There is incomplete combustion in cold weather - not much of an issue here in the desert