Ranger1 - I use the Laser Cast 405 grain in my Ruger #1 and have found them to be very accurate. I have been using loads from the #47 Lyman's handbook. They have some interesting loads using Unique and 2400 pistol powders with dacron wadding that I have found to be very accurate and pleasant to shoot. I have found that loading to levels that the Ruger is capable of handling will shake your back teeth loose!
I would recommend that you get a copy of the Lyman Manual and also the one that Laser Cast started putting out this year. Both are very informative, especially the Lyman manual.