As i remember Pinnacle was not really a bad powder. It was very consistent. It was very close to BP/Pryro in power and I do remember shooting it from a 1/48 Renegade with a 300 grain XTP.
Another thing that comes to mind... It was far better than Clean Shot and/or Clear Shot that I had at the time.
This just my opinion... but up until this time anything made by APP would come in last plast as compared to other products on the market.