Sector -
AA#7 is a wrong powder for your application. It is far too slow for 45ACP in 4" barrel. Being high-density powder, any kind of a safe load will fill that big 45 case incompletely, resulting in erratic ignition.
I use #7 for 38 Stupor, and medium-fast loads in 357.
If you are fond of Accurate powders, their #2 is perfect for a 45. It is low-density, cheap and clean. I was very pleased with #2 driving 185 SWCs.
Still, W231 is my 1st choice for 45ACP.
LT
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