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Lake City Army Ammo Plant tried a couple of Winchester ball powders when Winchester was running the plant in the mid 1970's. It's accuracy was not up to snuff and top level service rifle competitors hated it.
'Course even the bolt gun folks never got the accuracy extruded (stick) powder produces either. Match rifle and benchresters use extruded powders for best accuracy.
Use whatever powder you want, but those in the speed range of IMR3031 to IMR4064 has proved excellent for bullets from 150 to 190 grains. Faster ones for light bullets, slower ones for heavy bullets.
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