Gas ram

[Bsa2]

I occasionally take along my crossman stealth np gas ram to the range. Okay it dosent perform like my H57 but its okay. However after about 1 hrs use it tends to go ‘off’. Was wondering if this is a characteristic of gas rams ?

[Shed tuner]

it's worth shooting a grouo on a paper target after it;s "gone off".. you may well find it;s perfectly accurate, but the POI has moved as it's warmed up...