100gr of Pyro and a SST/Shockwave is a very slow load. By the time it reaches 200yards its a dud. Your Omega is perfectly capable of igniting Blackhorn209 without any modifications. The same volumetric equivalent of BH209 will be nearly 200fps faster. Thats still a bit slow for 200 yard expansion reliability though using that bullet. Run the numbers, i think you will see even the Barnes TEZ is losing quite a bit of speed by the time it reaches 200 yards. Under 1200fps and its a crap shoot on whether its going to expand as designed. Barnes lists that bullet as having a .195 BC. IF you started at 1900fps its down to 1262fps at sea level. You wont get anywhere near 1900 fps from 100gr of Pyrodex.

The best cheap combo i can think of is the Speer 300gr DeepCurl, Black CrushRib and around 105-110gr of BH209. Ron has captured a few at various ranges with this load and it shines for this application.
http://www.rchs61.org/P1000740.JPG