MK 262. which is a 77 grain SMK.
I keep a couple of mags of armor piercing on hand is needed, and the mags are individually marked as such.
Frankly almost anything that is not FMJ and that cycles reliably in your rifle will work fine. I would absolutely be 100% happy if all I had was 55 grain jacketed soft point hunting type ammo. If it will reliably drop deer, then it will work fine for most purposes.
I have used Federal Tactical 62 grain trophy bonded bear claw that was an issued round before and in shooting animals up to the size of deer, it was hard to see any difference between what it was doing in terms of terminal performance, and 55 grain soft point. The 62 grain bonded ammo was better for shooting through auto glass, doors etc but other than that it was hard to tell one from another when looking at the terminal effects on an animal.
Just stay away from the FMJ on one end, and super explosive varmint stuff on the other, and you will be fine.
