Brian,
This is just "my opinion" and having just gotten started acquiring a vintage bow or two and also owning several custom bows my opinion is.........
I think that the same thing that makes "any" bow a shooter is that it points well at the target and hits where I am looking. Most bows require some "fine tuning" to get them to shoot where you are looking depending on whether they are center cut, cut in front of center, or cut past center. This can make a bow shoot either left/right of where you are looking or dead on.
I also think that the design, materials and construction will show with how well you shoot one bow or another. There are some excellent "reproduction bows" out there today and I have a friend that has a vintage '59 Kodiak as well as the McCullough 59er. They both shoot similar but for me, I would have to give the "nod" to the 59er as far as being a "shooter" to me. The advances in limb design and materials I believe make the McCullough bow a "friendlier" bow to shoot. As far as pointability and hitting where you look, they are strikingly the same.......once again "to me".
I have had the opportunity to attend several of the bigger shoots and I make it a point to shoot anything that I can get my hands on. I have had about 4 bows that have "spoken to me" when I shot them the very first time. This "spoken to me" thing that I am referring to is that when you pick the bow up, nock an arrow draw it back, your hand just melts into the grip and is very repeatable. Then when you let the arrow go.........it hits right where you are looking without any adjustments of brace height, nocking point height, sideplate/strikeplate adjustment what-so-ever. It is indeed to me.......a "feeling". Everything about the bow and the shot process makes the bow so pleasurable to shoot because it just does what it was intended to do. If that makes any sense at all.
I have no idea how many different makes and models of bows that I have shot, but when what I am speaking of happens to either you or anyone else........you will know it without a doubt. I like variety and have more bows than I will ever need.........BUT...........that doesn't keep me from shooting bows that I haven't shot before. I just enjoy "variety"......I guess. The bows that are keepers to me, whether they are vintage or top of the line customs are the ones that I can consistantly shoot well. I'm not in search of the "magic bow" or anything like that, I just truly enjoy a variety of bows, made out of different woods, by different bowyers that appeal to me not only visually but can repeatedly be shot well.
Truth is........there isn't a bow out there that can shoot any better for me than I am capable of shooting it. The problem has never been the "bow" for me........it has always been the fella behind it. I have good days.........and bad days. The bad day shooting sessions rarely last very long for me and the good days have started to outnumber the bad ones.
Sometime.........somewhere, you will pick up a bow that has a grip that looks friendly to you, and perhaps you will even like the colors of the different woods that it is made of......perhaps not so much so, but when you hold it, draw it back to anchor, and let the arrow fly, it will indeed "speak to you"......
This is just my opinion......for what it is worth.
Winterhawk1960