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Old December 2, 2019, 12:03 PM   #9
old roper
Senior Member
Join Date: June 11, 2007
Posts: 1,915
std7mag, If you look at the different between some of the same loads in old manual vs you see they made few adjustment. The new manual they drop max load to 75gr/R-22 vs old at 75.5gr/R-22 for a loss of 28fps. The keep same 77gr/IMR7828 old manual vs 77gr/IMR-7828ssc and increase of 52fps. IMR-4350 load is same both manuals even to velocity.

I use Nosler data to load other bullets and I drop to their start load. I don't do % but I'll do fps.
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