RE: Cam & 1/2
rcher3, without knowing what all you have on your string, it would be hard to say if you should be able to get any more speed out of your bow. At 28" draw length, you are not doing too bad now.
I can tell you this.....ain`t nobody getting 300fps out of a 27" draw ultratec if they are maintaining 5 grains per pound. Not even close!