5gr for a 200gr 45 should be a good place to start. I think that I was loading 5.2 for cold weather and 5.4 for hot wearther. I will try to look it up tonite if I remember. $50 was about what I was paying in the mid 80s for a 10 pounder. I think it started at 48 and was about 55 when it was discontinued. I really did like it for IPSC competition once I knew it's quirks. Recoil and thus target acquisition was very mild.
Bob