From my years of being a four color printer, handling heavy slippery paper, I developed very muscular hands. What doesn't kill makes you stronger they say, perhaps that is why I can play my classical guitar as loud as I do, but it also helps when shooting sharper grips. I prefer my own slightly asymmetric grip, it is sharper to the thumb and slightly softer to the palm. I don't believe that shooting should cause pain or injury for those that do not have the hands for it, it is no fault on their part. I have tried to get boney handed guys to get into the sharper grips, but in some cases there was just no way for them to get past the pain in the palm.