Rechargeable 12 Gram Cartridge

Hi,I am told they shoot 10-12 shots ?
Its a long time since I used one, This one is new/unused.
I don,t know what pressure was in the Nitrogen cartridges or even the output of the gun ! This is relevant to shot count.
Here is a Pic of a Brocock TAC cartridge,( The little one ) This gives 600 Fps in .22 with one pump ( Read the above thread )On the Brocock Fox.
In comparing the 2, & looking inside, I can well imagine that the Larger cartridge has 10 times + the volume of the smaller IE 10-12 shots does seem feasible.
Also that much higher charge pressure could give a much greater output ?
What do you think ! Cheers Ged.
Pic - [IMG][/IMG]