TheJSB Exact King Heavy MkII 6.35mm is the heaviest shot in this caliber, designed for shooters using ultra-high energy FAC rifles.
TheJSB Exact King Heavy MkII has a narrower cup, so it fits all charging ports. The shotgun has a rounded round head, with a weight suitable for most FAC carbines on the market. The shotgun's heavy weight provides an extremely stable flight path for carbines with an energy of 50-70 J.
Approximate comparison of discharge velocity:
- vo=145 m/s for standard 16-17 J energy carbines,
- vo=250 m/s for FAC windguns with energy of 50 J
- vo=295 m/s for FAC windcheaters with 70 J energy.
