Not your "normal" varmint rifle, but I used Seafire's BD data on my 358 Win.

158 gr Hornady XTP pistol bullet
WLR primer

I tried 10-20 gr, just to get velocities, but
14 gr of Blue Dot was a little over 1400 fps
18 gr was a little over 1800 fps and both of these shot under 1" @ 100 yards and had very little recoil.