Bad news , even among specimens of the exact same models of guns they may have a different preference for brands of ammo .
Now more bad news , at todays ammo prices you will be spending a bunch of money to find out which one your gun likes the best .
Considering it is a Service model weapon and not suppose to be a tack driving target gun I would find a load that it groups in the 2-3 1/2 inch mark at 25 yards and be happy with that .
It will be more than accurate enough for the guns intended role as a personal defensive style gun .
