Most often then not, I get a question on the twist rate of AR-15 barrels (AR-10 is a completely different animal, and is not addressed here) and which twist should a client select.
Here's a chart to help you choose. Bottom line, there is no right or wrong answer but matching the right ammo to your barrel twist will help your AR-15 rifle to outperform!
Here's a chart to help you choose. Bottom line, there is no right or wrong answer but matching the right ammo to your barrel twist will help your AR-15 rifle to outperform!