Thread: How safe is old loading data?

They still claim 2208 is an "equivalent" for 4064. Recalling comments from similar threads reducing loads could be the fear of US litigation. Looking in my hogdon manual they now list 36.5 gr for 4064 and a 100gr, and the oldest book I have (Lyman 1964) lists 39gr of 4064 as max for the 100 grain.
I came across some 308 I'd loaded nearly 18 years ago last year 186gr lapua miras over 43gr of 4064 they shot fine back then and still shot ok when I burned them off to reclaim the cases. Looking in the modern books they are a "bit too hot" but Duponts suggested max was 45 back then.
They were "safe" when you loaded so if they've been stored well I cant think of any reason not to use them.