Ok, So I am a little kid at 74. Just got my first blow gun. A 40 cal. four foot two piece. Now I am reading they actually kill wart hogs with the bigger ones. I am thinking about buying the .625 in a four footer to hunt deer with. I would only take a 10 yard shot with a razor sharp dart with a broad head. Would a five footer give me that much more. I may not be able to blow it hard enough at my age so I am thinking of the single piece four foot cold steel blow gun. The fifty caliber from Target Zone looks great but I like the size of the razor broad heads of the Cold Steel in the .625. Your thoughts and comments please.