I would suggest that marksmanship is but one part of of the foundation for self defense, and it doesn't have to be a particularly high level of marksmanship. So a platform that is conducive to marksmanship may or may not be important to the self defense issue. How do the marksmanship abilities of a tuned PPC gun fit into the overall self defense paradigm? (I see Todd addressed that already!)
Any time you want, IMO. It is not like it will create any significant negative issues.And at what point should I change platforms to see if it's true?