7 saum imp.

[Ranger188]

Have a smith getting a reamer made and want to know if anyone has one.
What you are running it with? (tw, bullets, powder, etc. )

 

[Delicatessen]

I may be mistaken but this sounds almost the same as the Sherman 7max. There was some load data on Sherman’s site or long range hunting for that. I would take the numbers as max and drop down and work up. Think he used a couple of the reloader powders such as r23 and then n570. I would run 8.5 or slightly faster if you plan on the 190 class bullets.