Many Savage chambers are short and the 80 SMK loaded to 2.550 will touch the rifling and push back in a bit. I think the last one we worked with came to right at 2.500 just touching the rifling. We reckon the max load in this case should be reduced to 24.0 grains of Varget instead of 24.4 (Sierra) or 25.0 (Hodgdon).
If you load to 2.470, you'll be right at the rifling, so I would back your max load down to 23.5 grains of Varget, or whatever is 1.5 grains below the book max for the chosen powder. Of course, start at the min load and work up carefully, keeping a sharp eye out for pressure signs as you go.
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