I will be ordering a Super-Tac in the next couple of days. Just a little flip floppy on the caliber. At the present I am leaning heavily towards the 10mm. I already reload this caliber for three other pistols in my collection so chambered. However, I am also curious about the 9x23 cartridge and it might be fun to play with. My favorite shoppe carries 9x23 ammo, but only premium stuff whereas they have a decent (not great) selection of 10. Any feedback will be greatly appreciated.