If an accurate load can be worked up, both of them will do the job. Powerbelts do not like lots of powder behind them. At least I find that true in my three inlines. Keep the charge around 100 grains that they are very accurate.

Sabots in the Omega (like the Black Diamond XR I own) can be pushed a little harder. The thing you need to remember is instead of pushing a full .50 caliber projectile, you have reduced that to a .45 or even .44 caliber projectile. Depending on the bullet design, I have found it influences the long range abilities of the bullet. I have not had a chance to actually hunt with powerbelts or sabots. I have only seen the results from some of the performance tests I have conducted with the two.

Also from the posts I have read, powerbelts seem to be real effective in knock down according to one poster and the next is not happy. It seems some of the hollow point designs do not get complete pass through and therefore they lack in a blood trail should the animal run off. The same is true in some of the posts I have read on different sabots.

I suggest you get some Thompson Center 250 grain Shockwaves and shoot them at 100-120 grain of FFg propellants. Conduct your own tests to see how well they act for you. Do the same with some 295 & 348 powerbelts and shoot them around 100 grains. Accuracy is the main objective with any projectile. What good is a bullet that expands to twice its size if it can not be shot accurately....

Good luck with your rifle.