07-12-2017, 06:00 PM
The 16" data on Hornady's site is in fact a 14.5" AA Grendel with a pinned muzzle device, confirmed by Hornady tech support.
Use .462 G1 BC for your 123gr SST calculations within 600yds.
If you hand load for the 14.5", you can probably get 2450fps easily with CFE223.
You can also load the 129gr ABLR.
As pajasonc stated, 18" Grendel with a 123gr has typically been in the 2457-2511fps range for me using several different factory 120-123gr loads.
You will still get expansion on soft tissue down to 1800fps with the 123gr SST, especially with Grendel twist rates.
![[Image: Vol-2-Excerpt-300x326.jpg]](http://shootersnotes.com/wp-content/uploads/2014/01/Vol-2-Excerpt-300x326.jpg)
Use .462 G1 BC for your 123gr SST calculations within 600yds.
If you hand load for the 14.5", you can probably get 2450fps easily with CFE223.
You can also load the 129gr ABLR.
As pajasonc stated, 18" Grendel with a 123gr has typically been in the 2457-2511fps range for me using several different factory 120-123gr loads.
You will still get expansion on soft tissue down to 1800fps with the 123gr SST, especially with Grendel twist rates.
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
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com