As an LEO we almost never trained with duty ammo.
Too expensive and no gain after establishing duty ammo ran well.

Reminds me of a Glock armorers course I took. Chuck said the best lube for firearms was what ever someone else paid for.

I think you are over thinking the ammo.
Do you shoot IPSC, IDPA? Have you been to Thunder Ranch?
If no to the above, more training is more important than your practice flavor.

Emory