This is a fine ball type powder that is "ideal" as in "nearly perfect" for light bullets in 300 Blackout if you want SUPERSONIC loads
I highly recommend this powder for supersonic, light loads.  This site does not touch on this topic, but looking at gel testing for decades...I can easily say that the 300 BLK 110 polymer Tip supersonic bullet going over 1600 FPS is "better" than ANYTHING in 5.56 in terms of gel block testing,  Superb load.  Superb.
These shots below, are ALL with Adams Arms piston kit for 300 blk.