* Any grain from 147 to 180 is usable.
* 168 grain is recommended for best accuracy
* Use FMJ, HP, or “ballistic tip” type rounds (Hsoi: i.e. plastic tiped bullets; note that the term "Ballistic Tip" is a registered trademark of Nosler, so it shouldn't be used as a generic term for "plastic tipped" bullets)
* Avoid soft points. The lead can shave and wind up down in the action and jam it up.
* Avoid steel-cased ammo (not necessarily SAAMI spec)
* Avoid Hornady TAP (not sure why this)
* Avoid Cavim ammo as it’s not very accurate and varies in size
For hunting
* Winchester Silver Tip is OK to use (I'm not sure if they differentiate between Winchester Super-X Silvertip and Winchester Supreme Ballistic Silvertip, and/or if it matters. The Silvertip is an aluminum cap whereas the Ballstic Silvertip is a polycarbonate tip. Don't know if it matters, and it probably doesn't.)
* Hornady Ballistic Tip (technically Nosler makes Ballistic Tip, as it's their registered trademark. Are they meaning A-Max or V-Max? I don't know, but you get the idea.)
* Winchester Failsafe (Winchester doesn't make this any more, replacing with the XP3 line.)
* 168 grain for deer
* 175 grain for moose
* Moly coated bullets are OK to use but when you start to use them you must stay with them. You will have to clean the gas port more often. SAI does not recommend. If you do use them, it will gum up fast, and you’ll have to clean often and clean well.
* Tracer and armor piercing ammo is OK, as long as it’s NATO spec.
* Frangible ammo is too light, won’t work.