H1000-160 grain bullet
4831 works well also kinda old school.
H1000 -160 grain bullet- 70 grains of powder
4831-160 grain bullet - 65 grains of powder
Loads are over max , But puts you right at 3000 fps
Just a question why are you useing a 140 grain bullet.
I tried lighter bullets didn't have good results and went back to 160.depends on your twist.how fast your gonna push a 140, you May have good luck with 140

Most 7mm mag do well with a 160 grain or higher a lot of people use 140 in 7/08 and such.