I've seen one report where the shooter was using heavy charges of BH209 and the ELR powerbelt bullet. His 100yd target was really good, but he had not extended the range to that point.

Another shot the ELR powerbelts out of a break open smokeless capable rifle at 2,200fps and put 3 rounds in a hole he covered with a penny.

The breech plug system is currently being worked on for improvement.