For my purposes, deer at 100 yds max, I don't have need to hot rod it so I use a mid range load of 3130. Seating the bullets out you have virtually the same powder capacity so I would think any book charges could be used. Using it in a single shot I don't worry about a crimp, but not sure how well they'd hold up in a tube magazine. Don't know why you couldn't do the same with the .450 Marlin also. I have an NEF Ultra so chambered but haven't tried it.
