Any other model 60 owners out there? I was at the range a week or two ago with my son to get him acquainted with firearm safety and was trying to get my model 60 firing but it wouldn't load from the tube. All I had was HP's and I was wondering if anyone else had trouble with loading HP's. It's been so long since I shot it I really don't remember! I haven't tried it again since I gave it a good cleaning.