It’s still possible to have a “game gun” in Single Stack, Springfield Armory’s Custom Shop puts out one that looks really nice.
https://www.springfield-armory.com/1...c-9mm-handgun/
A heavy frame and big magwell seem to be the go-to choices for such an optimized gun. I’d actually lean towards a .40 or a 10mm, because I can still get 10 round Tripp “System” magazines, and load to either Minor or Major as I saw fit. The 9mm certainly looks nice, and it’s my skills and not my gun or its chambering that are currently tre limiting factor in my abilities.