That's a classic, beautiful, hardball gun!!

Yes, it will almost surely do better with softball match ammo, probably closer to 1 1/2" or so..........................but, unfortunately, REALLY good 45 match ammo is hard to come by these days. (The target says it was with FC Match hardball, though)

Best softball gun, that I ever had (I built), with a heavy rib, would do 1 5/8" with 10 shots with the old Winchester Super Match.

Never had a hardball gun get under much 2".

MM