If you listen to that Hornady podcast/interview with the engineers that developed 6mm ARC, they mentioned that they started out with 12 and longer 6.5 Grendel barrels for the DoD customers.
The "DoD entities were facing the problem of insurgents and combatants who would sit outside of their 5.56 NATO carbine engagement distances, so they started using more SR-25s and 7.62 NATO rifles to solve that problem, but it gave them all sorts of other problems weve talked about for years, namely weight, limited ammo, CQB restrictions/overpressure in the house, lack of maneuverability, etc.
They set up a number of different shooting scenarios to mimic real-world distances and problems, but gave them various length 6.5 Grendel AR-15s instead.
After working through all these field and urban shooting scenarios, they asked all the personnel what they would choose to carry, the SR-25/7.62 NATO weapons, or 6.5 Grendel AR-15s.
Without exception, all the guys said they would pick the 6.5 Grendels, 12-18, depending on what they were doing.
Hornady felt they could improve it with some tweaks, and necked it down to 6mm, which had already been done since Grendel brass was made available in the mid 2000s (6mm AR).
That reduced weight even more, reduced muzzle climb, flattened the trajectory, maintained a nice limited wind drift, and maintained supersonic reach out to considerable distances.
That was the whole impetus behind 6mm ARC.
[video=youtube_share;GtZUxn2Je-8]https://youtu.be/GtZUxn2Je-8[/video]
The "DoD entities were facing the problem of insurgents and combatants who would sit outside of their 5.56 NATO carbine engagement distances, so they started using more SR-25s and 7.62 NATO rifles to solve that problem, but it gave them all sorts of other problems weve talked about for years, namely weight, limited ammo, CQB restrictions/overpressure in the house, lack of maneuverability, etc.
They set up a number of different shooting scenarios to mimic real-world distances and problems, but gave them various length 6.5 Grendel AR-15s instead.
After working through all these field and urban shooting scenarios, they asked all the personnel what they would choose to carry, the SR-25/7.62 NATO weapons, or 6.5 Grendel AR-15s.
Without exception, all the guys said they would pick the 6.5 Grendels, 12-18, depending on what they were doing.
Hornady felt they could improve it with some tweaks, and necked it down to 6mm, which had already been done since Grendel brass was made available in the mid 2000s (6mm AR).
That reduced weight even more, reduced muzzle climb, flattened the trajectory, maintained a nice limited wind drift, and maintained supersonic reach out to considerable distances.
That was the whole impetus behind 6mm ARC.
[video=youtube_share;GtZUxn2Je-8]https://youtu.be/GtZUxn2Je-8[/video]
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