I'm getting ready to experiment w/ benchmark. Also, they make a 4 pack tester kit that has 4oz of 4 similar types of powder. It is only a buck or two more than a standard 1lb can. If you are looking for experimenting, I'd go that route. The tester I saw had the following: Benchmark, H380, Varget, and one other.
Benchmark appears to be a little faster burning (I think) takes less powder, and hence the name, should be accurate. I'm going to be working up loads for 22-250 as that caliber really shoots better at higher velocities, and it appears to create those higher velocities...
VEGETARIAN...old indian word for bad hunter