I am using RL10 in the .358 Win. with 180 gr bullets. I have also loaded a few 200 gr bullets with RL10.
Its a fine grain powder that measures and packs well.
I suggest that you work up loads from any data you can find and also use a burning rate chart.
http://www.hodgdon.com/burn-rate.htmlWhat’s your best RL-10 loads, 180’s and 200’s?
DF
You may not get an answer.
Some say it’s great, just it’s lot of info. RL-7 and RL-12 (discontinued) are popular. RL-10 has a good burn rate for 180’s and 200’s. And I have a can. Somewhere I got 45 gr with 200’s, which seems reasonable.
IIRC, Gunner500 mentioned RL-10 in the .358 Win. May need to check with him, get his load and then back off a bit...😄
DF
Edited to add: QL shows 42gr RL-10 with 200’s at 2,500 fps.