good sale on Green tip XM855 5.56/ $149.99/ 420 rounds plus stripper clip's
http://www.targetsportsusa.com/p-301...ammmo-can.aspx
lil chart I found on THR
Ammo Velocity Energy
40gr Fiocchi Hornady V-Max, 3353fps 999
Fiochhi 50gr V-max 2.250", 2923fps 949
Hornady 55gr V-max 2.238", 2875fps 1010
Federal 55gr FMJ BP223BL 2.193", 2980fps 1085
Federal 55gr XM193F, Brown Box, 3141fps 1205
Federal American Eagle 55gr FMJ Tactical XM193c, 3158fps 1218
Wolf 55gr FMJ 2.245", 2882fps 1015
Winchester White Box 55gr FMJ Q3131, 3096fps 1171
55gr PMC Bronze FMJ Ammo (PMC223A) 2.245", 2760fps 931
55gr Fiocchi FMJ Ammo (223A) 2.218", 2826fps 976
55gr Fiocchi Pointed Soft Point Ammo (223B) 2.185" 2834fps 981
55gr DRS FMJ Ammo (DRS223FMJ) 2.240", 3219fps 1266
55gr DRS Soft Point Ammo (DRS223SP) 2.225", 3222fps 1268
62gr Prvi Partizan SS109 XM855 2.240", 2990fps 1231
62gr American Tactical Imports SS-109 Penetrator (ATI556SS109) 2.240", 2990fps 1231
62gr Lithuanian Military SS109 Penetrator (GGGSS109) 2.253" 2997fps 1237
62gr Fiocchi FMJ BT Ammo (223C) 2.240", 2653fps 969
62gr Silver Bear JSP, 2903fps, 1029