I finally picked up my Ruger#1 in 450 3 1/4 nitro. It was 0riginally a 458 Win tropical that has now been rechambered. I loaded up some Black powder loads of 110 grains FFF with 405 grain Remingtons and some 480 Bertrams with 2208. Competed in the BGRC Black powder express event where it account for itself very well. Both loads were accurate and grouped well. The black powder loads were very comfortable to shoot and the Nitro loads let you know it had gone off, but was quite manageable. I have to get a higher front site as the loads are shootinga bit high and there is no more adjustment in the rear site. An aperturesite might be the go. The action has been nitrated( I think that is what it is called, it is silver in colour)and then some engraving. Some more load experimenting to go. Great fun