This is an excellent source of information,,,thanks guys. I do have a question that wasn't answered in this thread. I did get tired of pumping by hand,,,,turns out I am shooting more than I anticipated - so I am wanting to buy a SCUBA tank. My fill pressure is 3000,,,I've only seen one used tank since I've been looking and it only is rated at 3000.
Here is the question: How much pressure rating should I be looking for? Just anything over 3000?