just had a play with a scorpion .22 multi.... dropping 2bar per shot , is this normal?
Also had the mag indexing problem...intermittent indexing plus "slipping" for 2/3 shots.
I'd have thought that 1 bar per shot was more like it, especially in .22.
The ox is slow, but the earth is patient.
How many shots are you getting from a fill and what do you normally fill to?
The older type mags need a service from time to time, it is a DIY job, there is a helpful video on YouTube done by carbonrocket