Looking through one of my old books. Speer # 5 from 1967. I have a 4831 question. I don't use a lot of it but have some. Data in the book simply lists 4831. Does not specify IMR or Hodgdon. On page 27 a brief description is given. It's listed there as Hodgdon IMR 4831. I've looked at 3 different burn rate charts and have 3 different listings. Can anyone enlighten me on this?
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