Effects of Cartridge Over All Length (COAL) and Cartridge Base To Ogive (CBTO) – Part 1
Many shooters are not aware of the dramatic effects that bullet seating depth can have on the pressure and velocity generated by a rifle cartridge. COAL is also a variable that can be used to fine tune accuracy. It's also an important consideration for rifles that need to feed rounds thru a magazine. In this article, we'll explore the various effects of COAL, and what choices a shooter can make to maximize the effectiveness of their hand loads. Sporting Arms and Ammunition Manufacturers' Institute (SAAMI) Most loading manuals (including the Berger Manual), present loading data according to SAAMI (Sporting Arms and Ammunition Manufacturers' Institute) standards. [...]