Arrow vs Round Ball

[theairgunman]

I've been thinking about deer hunting a lot as I've been working on a airgun designed for that purpose. I really like to get the cleanest kill possible, which usually means I get as close to my prey and take as open a shot as I can. The last deer I shot was with a 30-30 at about 10 paces. I could have shot him 50 yards away, but he kept coming closer and closer.  When shot, he ran straight toward me (I nearly wet my pants lol) and fell about 50 yards away. The bullet (Remington Core lockt) didnt expand, passing right through him like a needle through a cloth. Upon field dressing, you could tell almost none of the kinetic energy was passed to the surrouding tissue.
I guess what I'm getting at is if penetration and a subsequent blood channel is what will kill the deer, as opposed to blowing up the lungs with a huge energy transfer, a arrow would probably be better than a round ball for a clean kill. I'm thinking the arrow will be more accurate than a roundball, and possibly give me a longer effective range. A full sized carbon arrow tipped with a 100 grain expanding blade broadhead would weigh less than the roundball, which means with a good seal behind it could be traveling at 450+ fps.
Of course, I'll have to talk to my local conservation agent about the legality of such a setup. A couple of years ago, I spoke with one about the very thing and he seemed pretty excited about the concept, so I'm hoping for a good response.
What do you all think would be more effective, a roundball or arrow and why?

[Pellethuntr]

 An arrow would probably give U more penetration but as far as "nockdown" power the RB take it... Also I am thinking that at a certaine speed an arrow will lose it's accuracy??? but I'm not sure...

[theairgunman]

I'm looking at shooting a 10 grain per inch arrow, 28" long. I'll tip that with a 100 grain broadhead. The barrel can be cut down to 28" which allows me to use any broadhead I choose, instead of being limited by the folding ones. I'll remove the vanes and replace them with my own stabilizer, similar to what you see on my website: http://www.airgununiverse.net/airgunarrow.html. At 300 psi (lower pressure, less pumping!) with the shorter barrel, it will shoot around 390 fps and over 130 fpe (comparing very favorably with the best of compound bows, the disadvantage being sound). With a good sabot system in place, I should be able to achieve better accuracy and longer lethal range than I could with a RB at close to the same speed.

[mouz]

i like round balls. this experience came from my second air gun, it went to 45-50 psi at the time(ahahahaha!) i shot a dart into a piece of one quarter inch plywood hanging on a cardboard box and the point was sticking out the other side of the plywood, i was happy, then i shot a bearing ball wrapped in duct tape............ it went through the plywood, then the first layer of cardboard, then out the back of the box, then bounced off and dented the wall! nothing has that kind of stopping power, but if your not trying to blow a 3 inch whole in stuff your probably better off with arrows.