My 1961 FN HP has some issues that I wasn't aware of. It was an Argentine service pistol and I guess it's just shot out. I haven't fired it yet, just cleaned, lubed it and looked it over. I looked fine to me, but a gunsmith examined it and found the barrel is pitted with one very deep pit. There's several degrees of rotation in the slide and a good amount of end play in the barrel lugs, a lot of up and down and side to side play in the slide. (this is cause for the rotation) I thought of having a new barrel fitted, but that wouldn't solve the other problems. It was refurbished by FM, but apparently all that was done was the replacement of the hammer and trigger springs and a rebluing. It's not going to be very accurate, but is it even safe to shoot with the pitted barrel and the looseness? The cost of just having a new barrel installed is around $300. Do you think it's worth installing a new barrel and can the other issues be fixed? Is it even worth fixing in its condition? What do you suggest?