As a hunter, a lot of my rifle purchases are based off of emotion & nostalgia: There's a certain set of classic chamberings that have appealed to me since I was a young boy reading Outdoor Life and Field & Stream. So the majority of my favorites were designed over a century ago. Which is fine because they are totally adequate for the hunting & shooting that I do. Unfortunately I do shoot left-handed which is why I have eight ambidextrous No. 1's and 1885's.
Left-handed bolts can be limiting if I don't have one rebarreled or custom-built since southpaws have to choose from a smaller selection. There's just some chamberings that were never available from the factory in left-hand models (e.g. 257 Roberts, 7x57, 300 H&H, 35 Whelen, etc.). So I guess that is one of the reasons why I've always been fascinated by the idea of a small custom run of a particular rifle since it was theoretically possible to have something affordable built that a factory would never make for me in bulk.
I appreciate y'all sharing your wishlist with me & participating in the thread. I had a pretty good idea that it would be difficult to come to a real consensus with a clear winner. There's just too many opinions, biases & preferences. But also, this is a really small sampling of people so to think we would have 50 people agree in less than 70 posts is laughable. But it was still an informative read. And I was glad that I emailed RHC to ask them about what criteria they looked for. Now I know what the hurdle looks like which generally gives you an idea of the chances for success.
To give a brief synopsis of this thread up to this point, I really focused on the chambering only as a starting point since that would have to be the first thing a group would have to agree on.
For the Ruger No. 1 the 404 Jeffery was the most popular followed closely by the 300 H&H.
For the Ruger Hawkeye African, it was the 7x57 / 275 Rigby followed by the 458 Win Mag.
In between those two for the African was the 404 Jeffery again. But unless there is a way to squeeze that round through a standard Ruger long action, then this might require the resurrection of the older RSM model. Just getting a regular rifle made in a particular chambering would be a challenge. Getting a defunct model remade seems more so.
But since the making of affordable African-caliber rifle has been on the wane, it is possible that a compelling argument could be made that we're due for a limited run of some big boomers. With Winchester making some Safari Express rifles and Montana Rifle Co getting cranked up too, maybe those are some good alternative avenues to consider also.
Anyway, thanks again for your feedback. I enjoyed perusing it.