I use winchester WSR (small rifle), have had no problems with many different powders. I have had problems with CCI, both the mag and reg.
I have used unique with good results from 9 to 15 grains in my 454, pushing a 250 grain bullet, when I get above 11 grains of unique I switched to a jacketed bullet (XTP).
my favorite target load is 11 grains of Herco, fills the case well and has excelent accuracy at about 950 fps.