I've used H-1000,IMR-7828 and Reloader-22 in my 7STW.They all performed really well for me.I use Reloader-22 the most,so here are a few loads I use.My rifle has quite a bit of freebore so your may get different results.As always work your loads up.These loads are a little under max for my rifle and are what shoots real well in it.
Reloader-22 - Winchester Large Rifle Magnum Primer - Remington Cases
139-140gr bullets - 80.0grs
150-160gr bullets - 77.0grs
175gr bullets - 76.0grs