Loose packed Federal branded Lake City M855 ammo. This is in stock with
free shipping. $0.33/round for 300 rounds delivered.
Federal Lake City M855 5.56 x 45 mm 62 Grain Steel Core - 300 Rounds: http://www.glensoutdoors.com/Federal-M855-5-56-x-45-mm-62-Grain
They also have Federal Lake City M193: http://www.glensoutdoors.com/Federal-XM193-5-56-x-45mm-55-Grain
for $152.95 w/free shipping in a 500 round case of 20 round boxes. That's
less than $0.31/round delivered.
Located in Montana, so no sales tax anywhere.
First-timer, be gentle.