Colt Anaconda, was told it couldn't handle the hot .44 Mags that we all knew were needed to kill deer back then. Shortly after selling they quit producing them.
Colt Police Positive .38 Special - just a nice little gun but I really didn't have much use for it. Shortly after I traded it off we got shall issue.
.44 Special: For those who get it, no explanation is necessary. For those who don't, no explanation is possible.