You didn't mention what bullet weight, but with a 45-grainer I'd start with about 24 grains of Varget, that should get you around 3000 fps, and give you plenty of room to work up. I found some data with BL-C(2) as well, they show 27.0 grains of powder with the 45 grainer.
I also have some data for H380, IMR-3031, IMR-4064, H4198, IMR-4320, and several others. Shoot me a PM if you need more, or want to try some other bullet werights. I've been collecting data for 30 years, this is where it pays off!
BTW, Varget looks like a REALLY good choice for the Zipper. 8)
I also have some data for H380, IMR-3031, IMR-4064, H4198, IMR-4320, and several others. Shoot me a PM if you need more, or want to try some other bullet werights. I've been collecting data for 30 years, this is where it pays off!
BTW, Varget looks like a REALLY good choice for the Zipper. 8)
