The early 140 7mms were pretty much good to go from the beginning, especially in moderate cartridges. I used them quite bit in the late 1980s from a 7x57, loaded to around 2900 fps. Killed pronghorns and deer out to around 350 yards, and never recovered one.

“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck