@Community Member posted:
Our duty ammo is Federal LE223T3 62gr .223, for both our patrol 14.5" and swat 10.5" rifles. It's been an excellent performer in both barrel lengths in multiple OIS events.
That's our duty load as well. I'm guessing I'm trying to reinvent the wheel here and will just stick with one ammo type. I'm thinking this will work in my SPR as well so I need to stop overthinking this.