Always begin loading at the ‘Start Load.’".This parameter is determined by various dimensions such asĢ) freebore-lead dimensions of the barrel,ģ) ogive or profile of the projectile andĤ) position of cannelure or crimp groove. The individual reloader is free to adjust this dimension to suit their particular firearm-component-weapon combination. It is important to note that the SAAMI “COL” values are for the firearms and ammunition manufacturers industry and must be seen as a guideline only. "SPECIAL NOTE ON CARTRIDGE OVERALL LENGTH “COL” There is no single COL for a given bullet weight or for a given gun. ![]() ![]() COL (Cartridge Overall Length) varies with the bullet used.
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