Tech Tip: AR-15 Twist Rates

17 Comments

1. blueknight on November 12, 2021 at 12:43 am

   Does barrel length make a difference when it comes to twist?

   
   
   
2. Jim Dees on November 12, 2021 at 12:48 am

   Short and right to the point. Thank you I have learned a lot today.

   
   
   
3. Pauldy 123 on November 12, 2021 at 12:49 am

   does shooting boattail ammo change the optimum twist rate?

   
   
   
4. TheRedCelt on November 12, 2021 at 12:52 am

   where can I get the hat that the guy on the range has?

   
   
   
5. Timur Zavidov on November 12, 2021 at 12:56 am

   Linus Tech Tips
   Brownell Tech Tips
   Both interesting, but very different

   
   
   
6. Chris Bohanon on November 12, 2021 at 12:58 am

   Seems to me you just get a certain grain stick to it zero your rifle to it and everything will be fine I’ve never fired anything except for a 55 grain and it’s always panned out excellent.

   
   
   
7. Pea Fam on November 12, 2021 at 12:58 am

   With the 3 different twist rates, 1:7-1:8-1:9 is there a chart to show the difference in the actual barrel hole size??

   
   
   
8. Justin on November 12, 2021 at 1:15 am

   Overwhelmingly, 5.56/.223 is sold in 55 & 62 grain, so why are most barrels sold in 1:7 twist rate?

   
   
   
9. T Black on November 12, 2021 at 1:18 am

   77 is the biggest that will fit into a magazine so this is still misleading information. The 1-9 is able to shoot the 77 grain. That is why we chose these years back because of it being accurate with all ammo grains. The AR twist chart isn’t needs adjustments in my opinion. . 1-12 twist is a rare twist rate in my opinion too. Maybe in the longer gas systems?

   
   
   
10. LURIFAX on November 12, 2021 at 1:21 am

    Seems that 1 in 8 twist is pretty optimal for shooting 55 grain to 75 grain bullets. 1 in 7 tends to be overkill for 55 grains. I’ve seen good results with 1 in 9 inch twist too for a variety of projectile length.

    
    
    
11. S. Thompson on November 12, 2021 at 1:22 am

    How are twist rate and barrel length related? Do you need a faster twist for a shorter barrel and slower twist for a longer one ?

    
    
    
12. Матвей Малинин on November 12, 2021 at 1:22 am

    Всё равно хлипчеватей Калашмата выглядит, хотя качество зайбатое.

    
    
    
13. Joseph Harris on November 12, 2021 at 1:23 am

    Brownells does not warranty their products sold thru Optics Planet

    
    
    
14. Corpsie on November 12, 2021 at 1:25 am

    The point about SS109, even though it’s 62 gr, being different than steel-free 62 gr seems to be something that is neglected in twist rate discussions in messageboards.

    
    
    
15. Ben S on November 12, 2021 at 1:29 am

    1/10 is also a common rate today

    
    
    
16. jDuffey on November 12, 2021 at 1:34 am

    Great video. I love Brownells

    
    
    
17. S. Thompson on November 12, 2021 at 1:36 am

    Can you please do this video but for AR 10s