Irascible, what are you going to shoot at paper or steel. I mention the 357 mag earlier as it is close to the 32 Miller for power/size. I have the Browning Traditional Hunter in 357 mag and have shot the Lyman 358315 205gr boolit and have also the RCBS 35-200 FN to try in it. I have used AA-9 powder with the Lyman out to 300 yards and it is a ball to shoot. My second choice of caliber would be the 6.5mm TCU followed by the 7mm TCU because of the high B.C. of the boolits along with the lack of recoil and plenty of die sets for them. I have looked at the 30 Johnson but the special dies, chamber reamer etc puts it on the back burner for me.