Well, since I'm first and they are in a great grouping, I'm going to fire my GL at them...
Target Ork 8
BS 52 + partial aim 10 + Laser Sight 10 = 72 / rolled 52 (shit, that was close!)
It should also hit Orks 2,3,7,9 and maybe 12,13 but I'll wait for a ruling on the last two before I do the damage rolls against them since they're on the other side of where the impact happened.
Ork 2 <slugga boy> T4+A2 / Damage 3d10+5 / rolled 14+5 =19 minus 6 defense = 13 damage / 2 hp left
Ork 3 <Ork boy> T4+A2 / Damage 3d10+5 / rolled 18+5 = 23 minus 6 defense = 17 damage / -2 hp left
Ork 7 <Ork boy> T4+A2 / Damage 3d10+5 / rolled 13+5 = 18 minus 6 defense = 12 damage / 3 hp left
Ork 8 <slugga boy> T4+A2 / Damage 3d10+5 / rolled 17+5 = 22 minus 6 defense = 16 damage / -1 hp left
Ork 9 <Ork boy> T4+A2 / Damage 3d10+5 / rolled 15+5 = 20 minus 6 defense = 14 damage / 1 hp left
Damn they're hard to kill!