N-133 is the go to powder for short range BR shooters using the 6ppc cartridge, which is almost everyone seriously competing. I have not found it to be my best choice in the .223 rem. While VihtaVuori powder is a bit more expensive than some others, it is not 400.00 per 8 pounds--even at Sinclair............16 pounds, almost..................
http://www.sinclairintl.com/.aspx/si...POWDER___8_LBS