A compact variable (2-7) would be a perfect fit for the shorter-stocked Omega. When starting with pellets, don't forget to include the 30-grainers for better load adjustments...ie.... one 50 / one 30 for 80 grains... three 30s for 90 grains .... two 30s / one 50 for 110 grains... etc.

A T/C Shockwave should not be difficult to load like it's sister (Hornady SST). I suggest you buy a couple of bullet varieties. One is the 250 Shockwave and the other is either the 240 grain T/C Mag Sabot Express or the 240 grain T/C Cheapshot.