I had a chance to fire a few rounds through a Savage 99 years ago, it was the first rifle I fired that was larger than a 22lr and it made a great impression on me. I have no idea what it was loaded with I'm assuming it was a standard load for dear because that's what the owner used it for. Anyways other than being a rifle that I have found memories of I don't know a whole lot about them. I see that the Lyman 45th edition doesn't list a 190gr RN but it does list a 193gr cast projectile and a factory duplication load for the 193gr. cast. The Savage 303 rifle they used for testing is listed as a 1-12 twist so I'm guessing that both a 1-10 and a 1-12 were produced. Anyways I thought I would post an image of the data Lyman published in their 45th edition even though it's information is limited in case it's proves useful and of interest.
I'm happy to share but because this is old load data I feel that I have to include a disclaimer for those who aren't aware that
older load data can be potentially dangerous and this is older load data published in 1970. Some people may not be aware that older load data can sometimes list loads that are considered to be to hot so please don't use this data as your primary source of information. Always use proper load development procedures starting with a minimum load working your way up watching for indications of excess pressure signs, thanks.
Here is an article that references the Lyman 45th edition and it gives an example of a published load that is potentially unsafe:
https://www.handloadermagazine.com/in-range-2
The below image is from the Lyman Reloading Handbook, 45th edition:
