Graeme,
I only own 3 Co2 pistols (well will do when the next one arrives)
They are a CP99 and can be cocked manually by pulling the slide back.
Must admit, its accuracy is better like that
And my Crosman 375 can also be cocked manually.
My Gammo R77 (when it arives I should think is similar).
Can we enter using these?
Tony