If a person specifically is asking if something would be HC/PC, I think the answers should be in the form of "yes" or "no" followed by a "because...". Giving a reply of "it doesn't matter" is not really an answer, as it completely ignores the original question - in fact, it's completely false - the original poster cares about it, even if it doesn't matter to anyone else, and therefore it does matter to them.
Of course, the reality is that there are only a handful of surviving examples of originals, many of which were the prime examples in their own day, and only survive because they were in a royal armoury or passed down as heirlooms. In such cases it is logical to assume that a gun in the spirit of the example would indeed be PC/HC, but if a "correct" example is desired, every effort should be taken to ensure that any deviation from the original(s) would be appropriate given all aspects of the history/location/art, etc. of the time.
On the other hand, I personally don't feel it necessary to have everything PC/HC. I like to have sleeved cannons. I like having a nicer gun than I could own if I were actually living in such and such time period. If someone were to ask if they should do this or that - without constraining it to PC/HC, by all means, everything within your skill/budget and imagination is an option.
Of course, the reality is that there are only a handful of surviving examples of originals, many of which were the prime examples in their own day, and only survive because they were in a royal armoury or passed down as heirlooms. In such cases it is logical to assume that a gun in the spirit of the example would indeed be PC/HC, but if a "correct" example is desired, every effort should be taken to ensure that any deviation from the original(s) would be appropriate given all aspects of the history/location/art, etc. of the time.
On the other hand, I personally don't feel it necessary to have everything PC/HC. I like to have sleeved cannons. I like having a nicer gun than I could own if I were actually living in such and such time period. If someone were to ask if they should do this or that - without constraining it to PC/HC, by all means, everything within your skill/budget and imagination is an option.