I went to the club this morning to shoot some practice. As the weather is cool 33 degrees when I got there it wasn't crowed. My friend and I signed up and I took the first spot on the sheet, we were joined by another regular shooter and s man and his son. I knew we were in trouble they were shooting short barrled guns neith one had a vest or a shell pouch. We had no puller/ scorer so I asked if the sqad was ready and then called for my first bird. My friend shot then the other regular then the son and finally the father. The fathers gun was not working well a (Mossberg pump) he couldn't get the slide back to eject a hull or reload. Everyone else shoot five and I said "Squad move please" the father moves to the 1st station and calls for the bird, I said nothing at this point and we continued to shoot from there five more shoots except for dad whos gun again jammed. We move and the son goes to the 1st station and calls for the bird. I looked over and told the dad that I was the person that shoot first and called for the first bird from all five stations. He smiled and said oh ok and we continued by the time I had made the 5th station dads gun had been jammed for a least the last ten shoots and he had it pointed at the cement. I told him that if it were me I'd be pointing the gun towards the dirt about twenty feet in front of the line. The father had me concerend (safety) it was obvious that he know nothing about guns and less about trap shooting. When we finished he asked if I could help him unjam his gun which I did. That gun hadn't been oiled in years, I todl him that I wouldn't shoot it any omore with out oiling it. He said it was in the closet for the last four years. Thinking about it afterwards, I thought I might have embarresed him in fornt of his son. Did I do the right thing my correcting the father and the son???