ive used unique, red dot, bullseye and Nc320 (tin star) in .44 , all with good results
if its for gallery at 25m you dont need huge loads, so you should look at what powder is bulkiest but still meters well with whatever powder thrower you are using - if you use one at all.
currently im using testing red dot for a new .357 with good results. it amazes me how low an extreme spread I can get with powder. on recent load tests over only 7 shots ive been getting standard deviation of about 9 fps across a few different powder weights. Im putting it down to the powder thrower and the lee factory crimp die. Im using an old redding powder thrower.