First let me say this is my first post here. Glad I stumbled in to the forum. I have a 30SF and so does a friend of mine. We went shooting and he and I both noticed that mine fails to go the distance his does. We were both shooting fmj blazer brass and the rounds from my 30 were dropping much sooner than his. We swapped to see if maybe my grip was the issue but swapping showed it to be the gun itself. Any insight? Thanks in advance.