The power belts do have problem, or 3 the fragmenting can be handled by plugging the hollow point, but you still need to shoot them with a fairly low charge.
I personally have not found sabots any problem, the one thing you need to remember is that they come with different petal thickness and that they need to be tight enough to take about 50 pounds of pressure to shove on down after they are started at least that's what I have found gives me really good accuracy. They can be to tight as well as to loose to tight is when you feel like you need to pound it down with something to loose is when you can push it down with one hand.
If there is some one close to you that shoots sabots see if you can get a few from them to try. I do not usually buy the sabots and bullets packaged together because if the sabot do not fit right for my barrel.