1. Factory DGX right barrel 2105 fps, left barrel 2157 fps. (Avergae of 10 shot strings).
2. I have a chronograph.
3. IMR 4831 comes close to those velocities and does not cross.
RL 15 and 19 both cross at near those velocities at 50m.
IMR 4350 had really wild SD between loads.
4. I've tried Fed GM Mag and Fed 215 primers.
5. Shooting off of sticks with a soft pad in the v and my wrist wresting on the pad. When I first got the rifle I was getting 2 inch 100m groups doing this.
6. It has a Leupold VX 6 1-6x24 illuminated on it. It was regulated with the scope. I'm using 8 inch dirty bird circle target.