Always late to the party, sorry.
The Hodgdon manuals have stated that when using H4895 for reduced loads,
Find the max charge weight of H4895 with the bullet of choice in their manual, and load your case with 60% of that Max load.
H4895 is their slowest rifle powder that will burn properly with reduced loads.
"Don't use H4895 in a cartridge/load that doesn't show that powder in their manual."
Check their Web site for more "Reduced Load" or "Youth Loads" info.
I find their annual manuals in Magazine form at the book stores.
Good luck, the 60% loads are lots of fun.

"Camping places fix themselves in your mind as if you had spent long periods of your life in them.
You will remember a curve of your wagon track in the grass of the plain like the features of a friend."
Isak Dinesen