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How to Pair Barrel Twist Rates with Bullets
by Keith Wood
When the U.S. military first adopted the M16 rifle in the 1960s, the M193 cartridge and its 55-grain bullet was standard. The earliest issued variations of Eugene Stoner’s “Black Rifle” came with relatively slow rifling twist rates of 1-in-14 inches. Shortly thereafter, nearly all M16s and M16A1s were being issued with faster 1-in-12-inch twist barrels.
In more modern times, bullets for military and civilian use have migrated to longer, heavier designs and twist rates have been altered to stay in-sync with this progression. With so many bullets and twist rates available these days, keeping track of which ammunition is compatible with your barrel can be overwhelming.
Read more: How to Pair Barrel Twist Rates with Bullets | Guns & Ammo
by Keith Wood
When the U.S. military first adopted the M16 rifle in the 1960s, the M193 cartridge and its 55-grain bullet was standard. The earliest issued variations of Eugene Stoner’s “Black Rifle” came with relatively slow rifling twist rates of 1-in-14 inches. Shortly thereafter, nearly all M16s and M16A1s were being issued with faster 1-in-12-inch twist barrels.
In more modern times, bullets for military and civilian use have migrated to longer, heavier designs and twist rates have been altered to stay in-sync with this progression. With so many bullets and twist rates available these days, keeping track of which ammunition is compatible with your barrel can be overwhelming.
Read more: How to Pair Barrel Twist Rates with Bullets | Guns & Ammo
