Anyone use IMR4064 for 378GNR?
Needing a start load for 300 grain, 285grain, or 235 grain bullets. This is for an Encore, but Contender info would be great too.
I have been using RE15, but down to my last pound and I don’t have H4895 or IMR3031.
I have 2015, one pound of Varget, and US869. Haven’t needed rifle powder for awhile, so this is LarryH’s fault
I took a nice Whitetail at the Y-O a few years back.
About 100 yds. with an Encore .378 GNR using IMR4064 and a Hornady 270 gr. Spire Point. It was about 100 fps under the hotter 3031 that Sean was using. I think I remember that.
I'll get the load at work for you. Of course you have to work up to it in your gun. I like to seat my bullets a little off the lands to. That affords several grains more internal capacity. Not that I fill it all up but it can afford some pressure level flexibility.
It's just a little down from 3031 in speed but not as hot pressure. Puffy liked 3031 too.
2008 at the Y-O, I was sick as a dog. The Encore .378 did it's job, one shot, no tracking.
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