Also for other real considerations of a cartridge more than GRUG WANT POWER or zoom zoom want better follow up shot. 303 had a very aggressive taper to the case, compared to 3006 and 8mm mauser, this is one of the reasons brits kept with 303 despite being rimmed was more reliable in machine guns because heavy taper offers much better primary extraction, especially when the chamber gets hot and dirty. And then as a negative point, 303 was loaded with cordite which wore the throat of all their guns compared to other powders. <|endoftext|> 