Might check with these guys. I have never done business with them but, found them on the web several years ago when I was considering a vintage mustang project.
https://transmissioncenter.net/home/
As I said I haven't used it in a while but, IIRC you can choose the cartridge, the bullet you want to shoot and it gives you the max pressure. It will give you a list of powders from the highest velocity down. It will also tell you the percentage of case fill. It will give you more info than...
I know some are not a fan but, I used the Quickload software for years with great success until I lost everything in the 2016 flood. I haven't replaced all my equipment yet but, when I do, I'll get the latest version of Quickload.
I got excited when it came out since I have a 35 Rem and a 350 Rem Mag. Then I found out they went with pistol diameter projectiles. I would have bought one if it used .358 bullets.
A friend of mine got a lead sled and put his newly built 8mm Rem mag in it and within 6 or 8 shots cracked the stock. After seeing that I went and bought a Hyskore rest that has a hydraulic damping cylinder that does not transfer all of the recoil energy into the rifle. I would never put any gun...