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Posted: 9/23/2023 1:30:42 PM EST
[#1]
Yes, 1/9 is fine for 95% of the .223/5.56 ammo out there, including 55/62 gr. It is actually more versatile than 1/7 which was designed with M855 in mind.
1/8 is also fine with M193 or M855 (55gr/62gr). |
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Posted: 9/23/2023 1:31:03 PM EST
[#2]
double tap
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Posted: 9/23/2023 1:35:18 PM EST
[#3]
Quote HistoryQuoted: Yes, 1/9 is fine for 95% of the .223/5.56 ammo out there, including 55/62 gr. It is actually more versatile than 1/7 which was designed with M855 in mind. 1/8 is also fine with M193 or M855 (55gr/62gr). ^this - really more bullet length but a 20" 1/9 will likely accommodate 95.2% of bullets you'd want to use. |
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Posted: 9/23/2023 1:54:30 PM EST
[#4]
Owning both 1/7 & 1/9 I agree with the posters above…
1/9 will serve you perfectly fine.. I’d say it’s slightly more accurate than 1/7 with cheaper non match ammo. Don’t overthink it and enjoy your AR ETA: no problem shooting heavier ammo up to 75gr |
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Posted: 9/23/2023 4:58:06 PM EST
[#5]
I'll echo what others have said. 1-9 twist is fine for 55 and 62 grain ammo. It might even shoot the heavier bullets fine too, you will have to try it.
The main reason for the 1-7 twist was not for the m855 62Gr ammo. The 1-7 was required to properly stabilize the longer M856 tracers rounds in certain environments. |
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Posted: 9/23/2023 7:06:57 PM EST
[#6]
It'll be fine with those loads.
Its too bad Old Bushmaster Weaponry couldn't adapt with the times. |
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Posted: 9/23/2023 8:41:23 PM EST
[#7]
Quote HistoryQuoted: Yes, 1/9 is fine for 95% of the .223/5.56 ammo out there, including 55/62 gr. It is actually more versatile than 1/7 which was designed with M855 in mind. 1/8 is also fine with M193 or M855 (55gr/62gr). M856 tracer you mean… |
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