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Need help on barrel for a rifle project
#4
For east Texas, I would lean on 16”.

There isn’t a significant performance and effective range difference between 14.5” 16”, and 18”.

We did a table on barrel length and performance based on the 123gr SST expansion threshold in the Grendel Handbooks that breaks it all down, with a velocity range for each barrel length.

10.5” 260yds
14.5” 350-400yds
16” 400-420yds
18” 410-440yds
20” 450-490yds
24” 500-520yds

Will you be shooting suppressed? If so, I would look at 13.9”-14.7” with a pinned and welded brake attack muzzle device for the suppressor to bring it to 16”, that way you can have a short, compact fire stick without dealing with unconstitutional NFA horse crap.
NRA Basic, Pistol, Rifle, Shotgun, RSO

CCW, CQM, DM, Long Range Rifle Instructor

6.5 Grendel Reloading Handbooks & chamber brushes can be found here:

www.AR15buildbox.com
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Need help on barrel for a rifle project - by LRRPF52 - 11-25-2022, 05:29 PM

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