Re: ERROR IN LYMAN 50th RELOADING MANUAL FOR KRAG
Posted: Sun Apr 12, 2020 6:15 pm
Note also that the Hogdon website for IMR4895 and 180g bullet shows a max load of 35.5 but no starting load is listed.
Dedicated to the continuing study, collecting, and preservation of the Krag Rifle.
. . . Maybe Parashooter could run quick load on the offending Lyman recommendation. . .
That "Hodgdon" data is old DuPont data they inherited when they took over IMR. I don't understand why DuPont had trouble with 4895 in their tests, but it placed low for both bullet weights they published. Note that for the 180 gr bullet DuPont used, the max charge of 4064 is 41 gr, which compares favorably with Lyman's 42 gr for that weight Speer bullet. Both tests gave about the same speed, too. 4895 and 4064 generally aren't that different, so Lyman's data is no surprise. I've read 4895 is actually better than 4064 when pressures aren't way up there.