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 19 G4 Gray | Glock 17 G4 FDE | S&W M&P 22 | S&W M&P 45 | S&W M&P 9 | Sig P226 MK25 | Sig P229 Extreme | Sig P227 Carry | Sig P320 F | Sig P320 C | HK45 | HK 45 CT | HK USP 9 | HK USP 45 | HK VP9
Daniel Defense DDM4 V4 | Arsenal SGL 21 | ASA SBR | Savage Mark II FV-SR
Mossberg 590A1 20" SP | Mossberg 500 Cruiser