Sometimes you can figure out a good low pressure load for yourself, with help from Tom Armbrust. I came by an 8lb. keg of commercial grade Solo 1000, from a small shell manufacturer, some years ago. I had no way of knowing for sure if the burning characteristics were the same as the Solo 1000 anyone can buy. So, I loaded up a few shells with components I chose, just doing some extrapolating from the charts available, and flew them off the Tom. They turned out to be a pretty darned good low pressure load. Lower pressure than I needed, at about 5100 psi, AIR, which left me plenty of room to ease the charge up to get a bit more pressure, and more cold weather dependability.
Just a reminder that there is no danger in trying new loads, Greg, if you have them tested by Tom before using them yourself.
Best of luck, SRH