First of all, the Omega manual says not to use smokeless, but I see lots of folks are using BH209, so I guess it's safe.
BH 209 is a BP substitute, not a smokeless powder.
I was just shooting BH 209 yesterday with the wind in my face. Believe me, it still smokes and has a not unpleasant smell. As a matter of fact it took a few seconds for the smoke to clear before I could see the target through my scope to see the hit.
