My apologies to the OP:
The OP may be happy and convinced of the 9mm's effectiveness as a defensive pistol/cartridge, the fact that there are caveats (you have to prove HP ammo feeds reliably over so many hundreds of rounds etc) and challenges (finding a source of affordable "legal" ammo), and the limited practice as a result of the latter, should make one think of another better pistol/cartridge combo. If you want to not have these concerns at all.....just buy a good 1911 (or Glock or WHY) in .45acp.
A quality 1911, even the lowly Norinco, will feed, shoot and eject hardball (roundnose) reliably...well, prove the gun/ammo if you must. My Norkies and even my Colts never had gun related problems with this ammo. Assuming of course the gun is in reasonably good mechanical condition, not too dirty (not more than 400 rounds between cleanings) and somewhat lubed.
FWIW, I got super reliable 9mms (P89 and G17RTF) that have never, ever failed to feed, fire and eject with my own reloaded lead and jhps (well twice the primers did not fire...deep indentation, tried re-firing to no avail, not the pistol's problem).
But my go-to, SHTF pistol are any one of my .45 Norkies. No questions, no doubts, remain in my head. 7 rounds of 230 grain home cast lead round nose at 800 FPS worth of peace of mind. I practice at least once a month with them.
No problem sourcing ammo for practice, pistol proving or serious business.