Let me just add the following information as taken from the Powerbelt website:
Q. Do I need to clean between every shot to maintain accuracy?
A: With sabots, cleaning between every shot is necessary to maintain accuracy---and in many cases just to get the next sabot down the barrel. Why? Because sabots leave a plastic residue in the rifling every time you shoot a round. If not thoroughly cleaned, this residue robs your barrel of accuracy and makes loading a quick follow-up shot very difficult. With PowerBelt™ Bullets, the plastic base only engages the rifling behind the bullet so virtually no residue is left behind. This is because upon ignition the bullet obturates (expands) to engage the rifling. The plastic base follows behind the bullet then drops away after the bullet leaves the muzzle, having done its job of providing a perfect gas seal. Therefore, you can shoot 6 to 8 shots in a row, only cleaning the barrel to remove excess powder fouling.
Also:
Q. Do PowerBelt™ Bullets require any additional lubrication?
A: No. The special design of the bullet eliminates the use of lubes that can harden in the barrel and make follow up shots difficult. Adding lubrication can cause pressures to vary and fouling to increase.
These can be found at
www.powerbeltbullets.com on their FAQ page.
While I am getting dangerously close to an endorsement, I can report that my experiences are exactly as listed above.
Mike