Sidearms High Scores (Cart) 1,176,100 - Punch
817,500 - Ninja Spirit
434,000 - Nat
Now here's a shooter I haven't taken the time to master... I can get to level 5 or 6 on the first credit then I usually have to continue. Here was my high score when I lost all my points and had to continue.
I don't know much about the CD version and if it changes anything gameplay wise, but I'll create a second list for people playing that version.
Either way, I shouldn't be too tough to beat.