Depends what powder you have around. I use Blue Dot (start with 10 gr) with a 340 gr Cu plated lead bullet. I use pillow stuffing to keep the powder at the bottom of the case - it is position sensitive. I went up til I got about 1250 fps.
There are powders (Trailboss) that are designed to fill the case with a low velocity load. These are ok if you have them and they give you the velocity you want. I didn't have Trailboss and I wanted a bit more velocity than it would give.
Titegroup would have also worked for me (without the pillow stuffing - so I am told), but I didn't have any.
mike