Biggerhammer,
I am sure there are many bullets that would serve you well.
This is what works for me in my Omega and my Pursuit Pro .50 cal. inlines.......
Bullet is Remington .44 mag JHP 240 gr. .429 diameter with the Hornady #6750 green sabot....charge is 2 50/50 Pyrodex pellets.
I purchased 100 bullets and 100 sabots yesterday.....sabots $6.95/50.....bullets $13.95/100. Total for 100 shots was around $29.00 including 6% PA sales tax. Got these at my local gun shop.