MN_COMMANDER
You certainly have some options with different sabots... switching powder probably will not help you load bunch - it would eliminate the need of swabbing but the price of the BH powder might not be acceptable.
If you are using the black sabot that came with the bullet you are probably using an MMP HPH-24. The options that might work for are litsted below:
Harvester 5045SB Short Black sabot - might work - althought it really is about the same thickness
Harvester 5045CR Crush Rib sabot that is definitely thinner
MMP HPH-3p-EZ load a 3 petal Black Sabot that is the thinnest MMP
Hornady Low Drag Red sabot
TC also has an easy glide sabot for the Shock Waves..
Here is a picture of combinations and their measurements...
This chart might help you compare sabot diameters... You are probably going to need something in the .501 area...