I shot a clip of 115 silvertips the other day -- the recoil is pretty easy to handle relative to the 147 gr. hydrshocks I usually carry -- when I cleaned it, I notice a "shaving" of jacket material in the gun. It still operates properly -- no idea how it grouped, since I was just plinking at a chunk of firewood -- or at least, the remains of one after I got done plinking at it w. my 45-70