Did it have a muzzle brake? It is supposed to generate near STW or better velocities.
The only ones I've seen had soda straws for barrels, which I strongly suspect would heat wuickly and die fast because of the volume of powder going through it.
The only ones I've seen had soda straws for barrels, which I strongly suspect would heat wuickly and die fast because of the volume of powder going through it.