Tightgroup is a cheap and fast powder, works excellect, however burns very dirty.
My vote goes to Vihtavuori n320
I find for the $7 more per 1000 rounds it is the cleanest burning and most accurate powder for 9mm you can buy... as an example you don't even 'need' to clean the brass if you didn't want to vs blacken'd brass with Tightgroup, it's worth it for me not to have a filthy gun and potential stoppage during competition if you neglected to clean your gun prior.
5.3 grains of unique. I like unique because it is almost impossible to overfill or double charge
That load with a 124gr SWC always worked well in my Glock & CZ.5.3 grains of unique. I like unique because it is almost impossible to overfill or double charge



























