It is a good powder. I have considered using it for everything, but have not done so. Now with the shortage of all powders I have the option of about 4 different powder I can choose. I always look for these powder when I am shooting at bigger shoots. Have built up a reserve and should get through this next year and hopefully one more year.
Long answer but have been really disgusted with all this shortage mess. If you can get Promo buy it. It has a lot of versitillity from singles to 27yd hdcp.
I havent seen that much variance Ajax. But each keg said be measured . The variance ive seen is plus or minus .1 to .2 grns. Hes using a mec a 28 bushing usually drops around 17.2. Suggested a 29 to get him up to the fps he wants. Hell they are cheap get a 30 as well. The 17.2 using a 28 is all I needed but I shoot 1oz loads.