I'm not sure how to best describe the ballistics of the 38-55. In it's mildest loadings it is a twin of the 44 Magnum, but with ballistically superior bullets. Loaded to 375 Winchester pressures, it is equal to Trapdoor loadings of 300 grian bullets. What I like best about it is it throws big heavy bullets but don't beat me up like the 45-70. I think the Target Model would be a good companion to your Marlin. The 38-55 has been discussed at length around these parts, do a search you'll find lots of info on it, At present I am getting 5/8"-3/4" 5 shot groups at 50 yards as measured outside to outside of holes, so groups are running 3/8" center to center I can't hold better than that. Not bad at all. So far, of 5 different Handi's I have played with, this one is most accurate day in and day out.