I picked up an old 12 guage mossberg bolt action shot gun,specifically for deer hunting .One issue is loading the 2 shot magazine-the second shell hangs up on regular brass length,it needs longer brass length for the second shell to load.The other issue is attempting to load the first shotshell into the chamber-the front of the shell needs to be angled up in order to go into the chamber,or it just won't load.The following shell seems to cycle ok.Not sure what to do,maybe slightly bend the front of the magazine.Anybody else had these issues,and what did you do to rectify it?