If you have read the grip article on the main page and are following the guidelines there your grip should be fine. If the abbrassions shows on let say the side of your outermost knuckle this is related to having the disc sliding out, instead of ripping out of your hand. For me it was because I wasnt getting any snap on the disc. To change that I focused on keeping the disc closer to my body and trying to accelerate it through the hit. Since I have gotten snap, (avg. line drive went from about 280 to 330-360) most of the wear has shifted to my indexfingerpad, though its mostly on the right side of the fingerpad(not to be confused with right side of the finger), which tells me I might have some gripissues. Oh an one other thing, if I have been out practicing and playing a round Im sure that my indexfinger feels sore and mildly sprained the next day.
Z-Pred, Z-Force, Destroyer, (M,S,Q)OLF, Roc, Wizard&VP