POWDER = 25.5 GRAINS XMP-5744 BULLET   = 405 GRAIN Z-CAST LEAD BULLET PRIMER   = WINCHESTER STANDARD RIFLE PRIMER SPEED     = SOURCE  = ACCURATE NOTE       = I USE THIS ROUND IN A WINCHESTER 86 FOR 200 YARD COMPETITION. THIS SEEMS TO BE A VERY VERSATILE ROUND FOR ALL OCCASION SHOOTING, AND DOESN'T SEEM TO CAUSE EXCESSIVE LEADING OF THE BARREL.  XMP-5744 POWDER IS RELATIVELY NEW AND I HAVE READ ACCOUNTS OF IT CAUSING PROBLEMS (SOME OF THEM DANGEROUS) SO USE IT AT YOUR OWN DISCRETION. I RECOMMEND READING ABOUT 5744 YOURSELF TO MAKE YOUR OWN DECISION. BUT IT WAS SUPPOSEDLY DEVELOPED FOR USE IN BIG BORE OLD BLACK POWDER CARTRIDGES AND I HAVE HAD EXCELLENT LUCK WITH IT SO FAR. YOU CAN USE A FILLER TO PROMOTE IGNITION, BUT I HAVE NOTICED A SLIGHT CHANGE IN BULLET PLACEMENT WHEN USING FILLER. IT'S UP TO YOU TO GET TO KNOW THE ROUND AND DECIDE WHICH WORKS BEST FOR YOU.