I use Nosler 130 gr. BT with H4831SC power (55.0 grs.) and I get 1 3/4" groups (7 shots)at 200 yards. If I was you I would try for your 140 gr. starting out:
1. H4831SC 54.0 grs. 2774 fps. then step up to.
2. H4831SC 56.0 grs. 2883 fps
3. H4831SC 58.0 grs. is max and gives you 3000 fps.
This is out of the Nosler Reloading Guide also a good power is IMR 4831, you can start with 49.5 grs that will give you 2670 fps with a 78% load density.
dbuck