That is a beautiful rifle. Don’t know much about the other than I kinda always wanted one. How do they shoot??
Here's some of the scoop on Ruger No1's, I know some, but others know way more than me:
-They are compact for their barrel length as there is no bolt, it's a falling block, breech load. So one shaves the length of the bolt travel which is nice to keep weight down, or get a longer barrel (more velocity) for the same length at the cost of a single-shot.
-They can suffer from handguard pressure issues. I end up inletting a Hick's Accuizer into the handguard to control pressure and alleviate a variable that on some No.1 instances cause variability
-They are really nice to carry and field, due to length, balance and weight.
-They are a VERY strong action, probably one of the strongest.
-The history of Ruger No.1's varies, early instances Ruger outsourced barrels and in that time frame some people believe they got lemons on their barrels; some refute that. They had Douglas barrels from 1967-1973 (serial #130-00001 - 130-04859); Wilson barrels from 1973-1991 (serial #130-05203 - 130-92985), and Ruger barrels from 1991-Present (serial # starting 130-95719). The barrels are not marked so one has to know the date range and there was overlap of suppliers in those ranges.
-My experiences and reading others experiences, one can always find at least an 1MOA load for their No.1's and often better.
-There have been some reports of some throating issues with particular chamberings, where throated too long, I've heard this is the case with older 22-250's. But no first hand experience just internet water cooler talk.
-To me they have a beautiful simplicity to them.
-Fun design detail is that any Ruger No.1 action can be chambered with a new barrel to any chambering. One does have to potentially depending on what chambering it is coming from rework the "ejector" for the new chambering's case rim.
-They are getting pretty expensive anymore, especially low volume chamberings.
I really want to get a Mannlicher "international" version with really nice wood someday. But any of the No.1's with those details cost $$$$. I would probably try and get it in a 30-06 as I don't have one and I appreciate it's commonness in the market and proven reputation, and the 30-06 was one of the first American chambering Mannlicher-Schonaur started chambering their rifles for, so it keeps some history with it. But I could also see myself falling for a 35 Whelen of the same configuration.