Re: Ruger #1
Whatever you want. Big advantage of a single shot is a long barrel to burn lotsa powder while keeping the OAL short due to the lack of bolt and magazine.
A well built and tuned #1 will shoot with a bolt gun. Something like a 7mmSTW, 300 Weatherby, any of the RUMs, 30-378 Weatherby would be a long range smacker albeit with a shoter barrel life.