Ok, i haven't seen much data floating around on the CFE pistol powder. I have 8lbs of it, hoping to use it to ride out the shortage on my regular powders. I had high hopes for this powder. After chronographing my 40 and 10mm loads, i am very disappointed. This powder is slow burning and does not come close to the published hodgdon velocity. Bullets used: Federal HST pulled 180gr Primers used: CCI small pistol Powder CFE Pistol Cases- mixed headstamp OAL - published min... So on 40S&W, i loaded at 6.2gr start and got a velocity of 958FPS average out of a glock 22 with a lone wolf threaded barrel. i jumped up to the book max after that of 6.5gr and averaged 1048FPS out of the same pistol. I decided to go past the published max since i had no pressure signs at max, and it was diminishing returns... i actually got slower FPS out of higher charges. 6.8gr brought me an average of 1038fps. no pressure signs, but why waste the powder? 10mm Federal HST 180gr Cases - starline once fired powder - CFE Pistol Primers - winchester OAL - published minimum. For my 10mm, i now know why my glock 20 Long slide doesn't eject cases with the 22lb recoil spring... its because this powder causes bunny fart loads. I loaded 7.2gr at minimum OAL. Out of my glock 20 long slide with 6.61" lone wolf barrel WITH a compensator, i got an average of 1106 FPS. very underwhelming. I ran out of primers, but have more coming monday and will reload higher charges and retest. The same 7.2gr load resulted in 1046FPS out of the stock glock 20 setup. Pretty clear that more powder is needed as i believe the longer barrel with this pistol gives a much better advantage with this powder and its burn rate. overall, very disappointed with this powder. I am going to keep developing loads, but this powder should be considered decent for plinking loads. Hopefully because its a slower burning powder, it will benefit more from my 6.6" barrel on the longslide G20. I could live with using only that as i have 2000+ cases that need to be loaded currently. Haven't tried 9mm yet, and no plans to currently. If you have a suggestion for a load you would like to see tested in 10mm or 40s&w, i will be happy to load a handful up and see what they do on my chronograph. i can test in the backyard too, so no waiting until "range day"