I have never loaded nor shot a 150cm pneumatic. However, from my experience with 110-115cm airguns I imagine that 300psi = 20-21bar will be somewhat limiting, especially
- if you are not using a sealing system (Mamba, Tovarich, etc)
- if you are using 8mm shafts.
An Italian friend of mine has a 130cm Sten. If I remember correctly, he had it pumped at around
28bar = 406psi and, equally important, he had the physique to load it!
Cheers, ulysses
