What primers have you guys been using that gives the best accuracy. right now i have fed match mags cci mags ww mags. I also have cci, fed and ww standard. Ill probably be testing re17 re19 and h and imr 4350 powders. Kind of wondering if mag primers were needed or if they gave any better accuracy in the short mags. I know each individual gun will have its own mind but thought maybe there was a consensious on this here from the guys with experience.