I put the M855 ball ammo I got from PSA in my footlocker and put more M193 ball ammo in my ammo can, along with some 55-grain .223 Remington FMJ to fill the can up. It's 870 rounds if I counted right. Here's a pic of the ammo can but it didn't turn out very well. The picture of my footlocker, on the other hand, turned out much better. It looks almost as attractive as pictures at an online candy store where I shop. On the far right you can see the left edge of the second layer of 5.56x45mm ammo. After I put all my M855 in the bottom and started the second layer, I put all my .223 in according to weight; 77, 75, 64, 62, 60, 55, 53, and 40 grain. No 45 or 50 grain ammo, but some of the 55 grain is Sierra Prairie Enemy. - Prairie Enemy ammunition utilizes our world famous BlitzKing bullets that offer high ballistic coefficients and high velocities. Our 55 grain ammunition utilizes the same 55 grain Blitzking that has terrorized varmints for years. That should work better in fast twist AR barrels than lighter bullets. The upper left corner of the footlocker is all .45 ACP, and the lower left is a little bit of .45 Colt and .410 bore. Next to that is .44 Magnum, then .380 ACP, and .22 WMR, with .22LR behind them, between the .45 ACP and .223 Remington. I can't get all of my rifle, pistol, or rimfire ammo in the footlocker, but I can get most of each in there, not counting what's in the ammo can and cassette tape case. I still have a few cardboard boxes of various ammo, plus 2 boxes full of .357 Max. and a few boxes full of shotgun ammo. Whenever I get around to it, I'll take the cheap .22 ammo out and make room for the Stingers or more centerfire ammo. I should take all the .22 LR out and see what I can fit in in its place.