I have a Ruger #1 in 45-90 and use the 405 with "stout" loads of 3031. Cloverleafs at 50 yards. For load data I use the 450 Alaskan. I was approaching 458 loads, but shooting it off of the bench was no fun so I backed off a couple of grains. I have just purchased a 1895 GBL and was already kind of wondering about the conversion. The 90 case is quite a bit longer