Ran a test this afternoon with the Ultra SE.
Filled to 220bar and got 90+ shots off and the gauge still reading 50+ bar.
Grouping between 0.5 and 0.75 inches, obviously accuracy suffered with the higher shot counts.
Refilled to 200bar, fired off the first 10 shots and then took the next 40 and achieved the same grouping 0.5 to 0.75 inches, considering the blustery wind and my poor technique, these numbers did not seem too bad?
Would welcome any views out there?