Bringsteen
Member
I am curious about using progressive powders in pistols, i.e., powders that have a slower burn rate when they are ignited than when they are about to be fully burned. The advantage of progressive powder is that the max pressure occurs after the projectile has "gotten up to speed," so you can get higher velocity within a given maximum pressure. Progressive powders are available in slower rifle grades (such as the Vihtavuori 500 series) but they don't seem to be available in faster pistol grades from any company. Am I wrong? Does anyone have experience using progressive powders?