Not really an ork artillery list but close enough. This is my second list; the first having been scrapped. Critique would be appreciated, as I've yet to play a single game where I had an idea of what I was doing.

Savage Orc Warboss 125p
Martog's best basha 15p
Enchanted Shield 15p
Warboss Umm's best boss 'at 30p
Warboss Imbad's Iron Gnashas
Light Armour 3p

x8 Spear Chukka's w/ orc bullies
320p (40pe)

x2 Giants
410p (205pe)

23 Savage orc bug 'uns w/ add. choppas and full command in 4 ranks of 6
352 (14ppm)

x2 25 Orc boys w/ add. choppas and full command in 5 ranks of 5
410p (205pe (7ppm))

x5 6 wolf riders w/ shorts bows, spears, and musicians

x2 10 wolf riders w/ spears, shields and full command
340p (170pe(14ppm))