Airforce Sabot rounds

I too shoot sabots in a modern muzzleloader with no issues at all. My .50 cal with Sabots shoot Hornaday XTP pistol bullets very nicely. Brother got a mold as the pistol bullets get expensive. Given the sabots stand up to fire without plastic fouling, I would think air would be no issues. I'm looking for files to 3D print the darn things, they are pricey for what they are.
 
Instead of a plastic sabot you can also try paper patching. There are many people using it even with smokeless centre fire rifles of different calibres and that is what was used before plastic sabots became popular. The plastic is just the easy and lazy alternative of paper patching.
Very interesting! I've actually never heard of that, but I'm going to do a little research! Thanks