military surp. powder data help.

[M-54]

I am looking to see if anyone has any experiance with a couple powders or knows where to find data. The powders are IMr 7383 and wc 857. I am looking for data for. 338 lm, 300 Wm, .270, 25-06, 6.5 creedmoor,with heavier bullets. Mainly safe starting loads Thanks

 

[jet_lagged]

Welcome to Bartlett Reloaders - Jeff Bartlett

I guess you did not buy them from Jeff Bartlett? His suggested starting weight reductions plus applicable online data from IMR for IMR 4831 and Hodgdon/H870 should do the trick as a starting load. But seems like not may guys here use mil-surp powders, so unlikely to get specific/tested load data, and even then, it would be for a different lot number with different burn rate.

 

[M-54]

I did buy from Jeff. I did use the posted guideline. However that data was so far off describing the approximate burn rate in the caliber I tried that I am looking for more info.