Not every gun shop owner has the luxury of a state of the art facility. Every once in a while there are going to be situations where storms may cause roofs to leak, basements will flood, and and poorly maintained electrically boxes may start fires. Very likely records will be lost in some cases...
Here is a link to "Western powders" load guide.
I have had good results with their Accurate 2230 in my 358 Hoosier.
Basically the same round with a little shorter brass. ( 1.800" vs 2.015")
Hope this helps.
http://blog.westernpowders.com/wp-content/uploads/2016/02/WesternLoadGuide1-2016_Web.pdf