The 336 is a tank of a gun and well designed. The only thing I have to consistently repair for people is the firing pin spring. It is designed to keep the firing pin out of alignment until locked in battery and prevent any 'out of battery discharges'. It serves this function well but are prone to failure. I always keep extras around, it is that kind of recurring issue but easily remedied.I appreciate all of the replies, but yours was especially informative. I have settled on a Marlin 336 as my dream weapon. It's chambered in .30-30, and I'm sure I could find a die that would be compatible with my father's reloading equipment. If I "pull the trigger" on buying one, I will share glorious photos of my purchase in this thread.
God bless!
Good luck with your dream, you will have a blast.