A friend of mine has an Enfield #4 Mk. I that his dad gave to him a while back. It has been used on deer in the last year or two, but unsuccessfully. It would be nice to take it to the range but I'm guessing this rifle has not seen any extended action since the Churchill days. It does seem to be in good condition, but I would really like to avoid a bolt blowing back in my face. Is there anything that should be inspected to make sure the integrity of the gun is sound?