For the good of the order... I Have been loading 40's with 10.5 gr. Accurate#9 and a tight crimp. It shoots ok, but leaves some unburned powder. A knowledgeable friend suggested I use magnum primers. I didn't have any, so I swtiched th Bullseye. (I already use bullseye for 9mm and 38 DEWCs.).
The Lee and Speer manuals recommend a start weight of 5 gr. So I started with 5 gr. but kept the tight crimp. The results were very surprising! Those rounds fired like full power loads! I'm thinking the crimp is too tight. Yes?