I could have got the wrong end of the stick here, but when I see a barrel and stock held together by key wedges I feel that the maker has made an effort to make it easy to separate them for maintenance operations, in particular, drying off a gun that has been exposed to bad weather.
On the other hand, I tend to feel retaining pins shouldn't be disturbed too often for fear they will work loose in the wood.
If I'm correct in this, how should a gun built with pins be cared for, particularly the hidden parts of the barrel?