I've run thousands of rounds of both 193 and 855 through my V2. It performs beautifully with it all and can easily do sub-MOA groups.
The only ammo I've had any issues with in my DD is Wolf. This is because DD doesn't over gas their rifles. A lot of manufacturers use larger gas tubes to function with lower quality ammo. I found Wolf causes my V2 to short stroke a few times per mag.
With anything else it runs 100% perfectly.
Enjoy the gun. It's a hell of a nice weapon.
Glock 43 | Glock 26 G4 | Glock 19 G4 BFG | Glock 17 G4 FDE | Glock 30S | S&W M&P 22 | HK USP 9 | HK USP 45 (Tan) | HK P2000 | HK P30L | HK VP9 | Walther PPQ 9
Daniel Defense DDM4 V4 | Arsenal SGL 21 | ASA Side-Charger SBR | Savage Mark II FV-SR
Mossberg 590A1 20" SP | Mossberg 500 Cruiser