I am guessing you can't use sabots to hunt with where you live because the Omega really is a sabot rifle. I shoot the 370g maxiball out of my Encore with fair results and I bet if you keep the charge under 100g the 320g REAL may just work in the Omega.

I say what the heck order a batch and see if they work Even if they don't you at least had a good reason to go out shooting and have some fun.