Help with 7mm prc, Berger 190 lrht and RL23

[bryanfields]

Hi. I just picked up a Seekins Element in 7mm prc. Barrel has been trimmed to 18".
Was planning to try Rl23 along with a couple other powders with Berger 190lrht.
Berger does not have any data on this combo.
Checking here to see if anyone has tried this and has any advice.
Thanks!

 

[Dmagna]

Hornady has data on their 190 atip. Just follow that, start low and work up.

 

[bryanfields]

Hornady has data on their 190 atip. Just follow that, start low and work up.

Thank you!