Ruger#3,
I'm in your corner.When I first tried Rel#7,the results were so good,that I lost all interest in trying any thing else.I've been loading the 45/70 for a long time;when Hercules Sharpshooter was the best powder for it.
I used to get one hole groups at fifty yards with it,but ,when it ran out,I no other powder gave me consistant good groups.Twenty years later,I found Rel#7,and the accuracy has returned.A lot of folks like Varget,and when I get my long barreled Infantry rifle fitted with an optical sight,I will give it a try.I think that it is a little slow burning for my Calvery Carbine.
Frank