I want to buy a decent pile of ammo for my AR. I have some of the Ulynavosk (sp?) that is steel case from Cheaper than dirt and it works fine. Penetrates a 1/4" steel plate like nothing, and tumbles through trees with breeze (due to the steel jacket I presume). I really like the stuff, as it DOES tumble. However, I realize there may be better choices. What do you think of these two out of a 16" barrel with a 1/9 twist? 62 gr m855 with steel penetrator from PMC X-Tac http://www.palmettostatearmory.com/1101.php Federal XM193BK http://www.palmettostatearmory.com/1298.php Wanna kill these ads? We can help!