I have one. 3180 w/ 190a-tips. Using Retumbo. 28” barrel. Could get more speed out of another powder, but barrel life would suffer. Probably back this load off 1/2 gr. to be honest.
Using Lapua brass and Redding sizing die. Neck down in 2 steps.323 then .314. Km 7mm expander die.
Just getting...