owner info on a wolverine b hi-lite .177

I have a wolverine B hilite in .22. My dad has a wolverine C in .177 that is only a few months old. His has the 300cc air tube. I can post a pic of his shot count if you would like.....should give you an idea of how many more shots you would get with the 480cc carbon fiber bottle. Theyre the same exact gun except one has an air tube and the other a bottle.
I will say this about his .177......the damn thing is bloody accurate as hell.
 
Thanks for the info Guys .My pcps are 25 cal and 30 .I am looking a mild shooting .177 to work inside and around barns shooting varmints without shooting through walls and tin roofs .Marksman thanks for the shot chart .I was hoping to get 40 or so shots at 18 or so foot pounds .after looking at the charts I think that can be done .Really do like the design of this rifle .Again thanks to all for info .