Before someone tells you that your Omega will not shoot conicals, I would try some different conicals. All rifles are different. I have a Black Diamond XR that shoots conicals fine. It has the same barrel as the Omega, but a different ignition action. So try the rifle.
Now if you have not purchased a rifle and want an Omega, and want to shoot conicals, I would tell you not to. I think you would have a better chance of a conical shooter with a different brand rifle. The best conical shooters out there IMO are the Whites.. Also the Knight rifles seem to do a pretty good job. As do the NEF and some of the other ones..