That Patriot is smoking those 150 pills out pretty quick

(used to be a fellow in Claremore, OK that built a few of the Lazzeroni chambered rifles).

In terms of maximum velocity, it would probably be hard to be the JDJ line of cartridges on the Encore, although other rounds could duplicate their muzzle velocity, or get really close.

My 15" 280AI would do 140 Nosler AB's @ 2750 fps accurately and with IMR4831 would do 2850fps but not accurately. JD's 280JDJ is rated to do 2850FPS with 140's.

Regards,
Rog