If your Unique load will put all bullets fired into 1 3/4" @ 25 yds from a machine rest, your good to go. Unique does not measure as well as Bullseye for me. Getting .2gr variation is common. The revolver scores for Bullseye competitions show its not so easy shooting timed and rapid, but fun.
http://www.nrahq.org/compete/natpdf/cp147-11.pdf