The 5.7x28 is a very neat little round and not as costly as one would think. They seem to be very accurate given the FiveseveN (what FN calls the pistol) is accurate to 100 yards with open sights. The actual groups sizes were surprising. The round is very fast for it's size. I know several people that have it in T/C handguns and love it. It should do well for what you want and a box of 50 rounds runs $20, not bad.