Jayhawk,
I dont know hot to reload for subsonic shots, have never done it. Probably that is a good idea.
I reload for my 270 Win, it is a Winchester Mod 70, Pre 64, FEATHERWEIGHT, and my wife shoots it without a problem. My wife is 5 feet, 8 inches, tall, weights 120 pounds, tall and skinny lady, and she handles it perfectly fine. It is a very light rifle, which has a harder recoil than a heavier rifle.
I use 130gr, Sierra ProHunter, with IMR 4831, 54.5grains.
Hope this helps.