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I shoot a variety of bullets in my Omega or any of my other ML's but an inexpensive bullet you might want to try is a Speer Gold Dot/Deep Curl. I shoot both the .452/250 grain and the .452/300 grain. The 250 is made for the 45 Colt and the 300 is made for the 454 Casual. With either of these two bullets I shoot 110 grains of T7-2f.
The next thing is to find a sabot that will fit down your bore. You will probably need to start with a Harvester 5045CR (Crush Rib).
Semi fixed it.... when I was typing this I had just finished reading a FG post that bothered me....