Hey neighbor. Don't understand most of what your saying. I'm guessing your in some kind of competetion. One thing I do know is there doesn't seem to be a uniform code that arrow manufactures follow. Gt's are weak as far as I'm concerned. Bemans are on the stiffer side. When I shot gt's I had to jump up a grade in spin than what was recommended. The Beman's I shoot now I'd say, although I haven't tried it, could go down a step.

On a side note. Where do you shop for gear? Always looking for a new place. Doesn't seem you have any place in town.

I think I get it now. CB= cross bow? Sorry about that. I don't know about that stuff. There so short though I'd say you could use the 300-500 depending on the pounds of the bow.