Your mon is something to handle a 300 H&H, My farther didn't hunt deer. I did as early as I became legal to hunt deer. Thanks for sending the pictures. I find that very interesting. It's make me happy when people past it down to the next generation. My sons are doing the same. The boys I when to school with only 1 or 2 carried the hunting forward. Most didn't hand it down either. SAD!
Couple more thing on that 308NM. After resizing 300WM cases to 308NM. Anneal them at least onces. At the time I was shooting my 308NM I was loosing cases do to neck splits after fire-forming the case. The 300 WM case after being resized to 308NM cases will need to be trim to length. Anneal one time afterward would stop it.