I have had two Omega's. Both were accurate rifles. But like yours, both were very finicky. The best load was 120 grains of 3F BP with the TC 250 grain bullet.
I got rid of both rifles. You could hammer the second shot down one rifle. But in the other rifle the second load WOULD NOT go down.
Way too finicky for me-so they had to go.
And both trigggers were atrocious. No way I was going to try to work on the triggers myself. Too complicated.
Good rifle, good value, too finicky. But it is a one shot wonder for accuracy. Which after all is really all that is imporant with an MZ?? Tom.