Has anyone ever run these over a chronograph? I've got an 75 year old friend who insists on shooting his 7mm RM for eastern whitetails. He's had 2 open hearts and while he has several other (smaller) rifles, he's somewhat stubborn. His son found him some of the 140 gr reduced recoil loads several years ago that really work well for him but now he's running low. I've got lots of different powder and bullets to work with. I'd like to try to duplicate some loads for him and I'm just looking for a target MV.