Thought I would share: 29 degree day, five shot string, 10 feet from the chronograph, COL=1.02, Weidner's 122 grain Conical Lead Bullet, heavy crimp, mixed brass, Wolf Small Primers: 3.50 Solo1000 ==> 1025 Average FPS ==> 125 Power Factor 3.65 Solo1000 ==> 1044 Average FPS ==> 127 Power Factor As cold as it was today, I feel comfortable with the 3.5 load for USPSA Minor Power Factor. I have 3, 9mm's that I shoot a lot. The Sig P-226 has the slowest results. So I use it as my baseline. My G-17 Storm Lake barrel typically gives another 100 FPS than the Sig. My G-19 Lone Wolf barrel gives about 10 more FPS than the Sig.