.308 win with swift A-frames?

[Darryle]

I wonder how those would do in an 18" barreled rifle?

Trying to find muzzle velocity of that load.

 

[sable tireur]

Ravenrock reports:

"I shot one across my chronograph and it gave 2565fps at 15ft from a 22 inch Rem 788."

Norma's website is the same.