Long story short on the Roberts - My Dad had it custom made for him in 1950. Short barrel, beautiful walnut stock on a Mauser action. He gave it to me when I turned 13 and I’ve killed all of my game over the years with it except elk, although I did take one elk with it just cause I thot it...
I do handload. In looking about the .260 seemed to have quite a bit of flexibility when it comes to loads. Seems like you can make it reach out, keep a reasonable amount of killing power and still shoot pretty flat. So you like the AI ?