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AR 15 1:9 twist Ammo
- Thread starter Dan31
- Start date
JackieNeil
Moderator
The 1:7 twist barrels shoot the higher grain better. The 1:9 twist can shoot the lighter grains
A 1:9 twist should be able to shoot anything at least from 50 gr - 68 gr. Some can shoot the 75 gr OK.
It depends on how much you want to spend and how densely populated is your area. A basic round for SD would be a 64 gr soft point like the Winchester Super-X Power Point, or Federal Power Shock. Or there is the Hornady 60 gr TAP polymer tip. These would be better for more populated areas, if you are going to use the rifle.
A premium load would be the Corbon DPX or Black Hills with 62 gr Barnes Triple Shock X, which would be superb all around SD round, especially where your neighbors are not too close as it would penetrate better than most. A much more affordable alternative for this role would be the Federal Vital Shock with 60 gr. Nosler Partition SP, or Federal Fusion 62 gr bonded SP, or Remington Premium CorLokt Bonded 62 gr.
All of these are available at Midway, as well as other online or store front shops.
It depends on how much you want to spend and how densely populated is your area. A basic round for SD would be a 64 gr soft point like the Winchester Super-X Power Point, or Federal Power Shock. Or there is the Hornady 60 gr TAP polymer tip. These would be better for more populated areas, if you are going to use the rifle.
A premium load would be the Corbon DPX or Black Hills with 62 gr Barnes Triple Shock X, which would be superb all around SD round, especially where your neighbors are not too close as it would penetrate better than most. A much more affordable alternative for this role would be the Federal Vital Shock with 60 gr. Nosler Partition SP, or Federal Fusion 62 gr bonded SP, or Remington Premium CorLokt Bonded 62 gr.
All of these are available at Midway, as well as other online or store front shops.
thesheepdog
New member
I shoot 75 OTM's in my 1:9 and they're accurate at 100 yards.
1:12 shoot < 55 grns
1:9 shoots < 68 grns
1:7 shoots < 90 grns
You can shoot lighter bullets out of a faster twist better then you can shoot heavier bullets out of a slow twist.
Pretty much any twist & any bullet will shoot to 100 yards. Its when you move to 300 + where you see the the difference.
The Army shoots 223s (5.56 for nit-pickers) in 55-77 grns (80-90 in competition) but they use 1:7s so it dosn't matter to them.
1:9 shoots < 68 grns
1:7 shoots < 90 grns
You can shoot lighter bullets out of a faster twist better then you can shoot heavier bullets out of a slow twist.
Pretty much any twist & any bullet will shoot to 100 yards. Its when you move to 300 + where you see the the difference.
The Army shoots 223s (5.56 for nit-pickers) in 55-77 grns (80-90 in competition) but they use 1:7s so it dosn't matter to them.
zombieslayer
New member
My minis both have 1:9 barrels and they LOVE 62gr 5.56's. So did my AR's with the same twist.M855's are my load of choice...
deadcoyote
New member
I agonized over twist rate in my own build. I ultimately found its alot of what your rifle likes as well. I went 1:7 and it shoots 69 grain better than 55, 62, and 75 by the same manufacturer. Just experiment with a bunch of types and find what your rifle likes.
Bamashooter
New member
i reload 60, 65, and 69 grain sierra for my 1/9 twist ruger and it shoots them all very well. i have shot some 75gr. and it seemed to shoot those just as good as it did everything else. my most accurate load is the 69gr with IMR-4895 powder. honestly i have never shot anything under 55gr. out of my rifle. im a big fan of heavy for caliber bullets.