I'd tell him to try the ssx then. In my brownings, I've shot jh and many other ported, non-ported and even flush mount chokes without good success in fc 3-2-4, 3-2-5, and 3-1.75-6. Only thing I can guess on the ssx r the port holes r small and few, but then again I shot the factory xfull with the few small port holes and it didn't do well - but that factory extended is much more open at .697. 60-80 pellets with just about every combo. Only fc I've liked is fed hw 7s and that wad is supposed to b more forgiving than the others and that's what I currently shoot with Hastings .660