According to Nosler Reloading Guide No. 7, “The individual granules of both types of powder are further coated with a variety of chemicals to control burn rate, increase storage life, decrease ...

Trustworthy load data is rather limited for the .257 Ack ... The recipe’s load of 49.0 grains of IMR 4350 fired Nosler 100-grain Ballistic Tips at 3,214 f.p.s. from the Montana Rifle Co.’s ...