Just wondering how much of a difference or how much hotter the CCI 450 primers are over the 400`s? I`ve been reading of guys running 30+ grains of Varget with the 450`s (in 6BR`s) and having better luck with there velocity spreads. I`ve already run into pressure signs at 30 with the 400`s. Im really wanting to try the 450`s & would like to know how much i should realisticly expect to drop on the powder charge (of course drop lower and working back up).