RE: guess my FPS
deer-hunter, I wasn't kidding about them being underspined, at least according to convention. You ay they paper tune well, but at what distance? Try several distances and see if they keep punching holes. I wouldn't bother going past about 20' though. By that time your fletching is affecting the arrow. And once you got this try screwing some broadheads on and shooting them to see how they group, and where.
I do agree with Dave though. If they do, indeed, turn out to shoot everything to the same hole then by golly, good for you. It just proves that there are exceptions to every rule.