I've called this a mirror list because I have 2 units of pretty much everything. There are a bunch of restrictions on what I can and can't change, but rather than list them all here I'll just direct you to
this post on my blog.
Onto the list:
HQ Junior Officer w/ bolt pistol, 1 flamer 1 melta (edit - forgot to show this originally) vet w/ standard
Sentinel w/ autocannon
Elites 6 Veterans Serg w/ bolter, 2 plasma guns
Troops Infantry platoon 1
Junior Officer 1 flamer 1 melta
Infantry squad lascannon
Infantry squad lascannon
Infantry platoon 2
Junior Officer 1 flamer 1 melta
Infantry squad lascannon
Infantry squad lascannon
Fast Attack Hellhound extra armour
Hellhound extra armour
Sentinel w/ autocannon
Heavy Support Leman Russ, heavy bolters all round, extra armour
Leman Russ, heavy bolters all round, extra armour
Heavy weapon platoon
Junior Officer 1 flamer 1 melta
Fire support w/ 3 autocannon
Fire support w/ 3 autocannon
So that's 8 autocannon, 8 heavy bolters, 4 lascannon, 2 battle cannon, 2 inferno cannon, 4 meltaguns, 4 flamers, 2 plasma guns and 17 scoring units.
How would you improve this list?