b23ball23,
Yes, there is more that goes along with shooting a PCP then just shooting. Most use a scuba tank as a power supply for the rifle of it's changeable bottles. Both the wife's Super 12 and my Rapid 12/250 use 400 cc changeable bottles. We carry a spare bottle each when ever we go hunting. We re-fill these bottles from a scuba tank. The scuba tank is re-filled by either taking it to a dive shop($2 to $5 depending on where you take it) or do it yourself with either a hand pump(hard way but the cheapest way) or using a electric pump(easy way but the most expensive way due to cost of the pump). Electric pumps can and will run you up to $1,000.00. I bought my electric pump from a dive shop that was going out of business for $225.00. The good points to a PCP is they give constant power, very powerful, are accurate and have basically no recoil. Main drawback to them is their cost. Good ones expect to pay from $750.00 to $5,000.0 for custom jobs from builders like Quackenbush. As far as the bottle you have it all depends on it's size, whether or not it will match up to what type of PCP rifle you have. Hope this helped, if not feel free to ask away. Lawdog