I am trying to find/develop a load for 12 ga 2 3/4" Remington Gun Club once fired hulls using LBC 43mm wads. I have read that the hulls are similar enough to AAs that the data is also very simiar (subject to verification). So far, I have just used AA clone hulls and am really looking for better grouping control. I see that this thread is pretty old. Any info steering me to reference materials would be greatly appreciated.