Leupold BX-4 Rangefinding Binoculars

Reloader 33

I have such good luck iwth Retumbo, I have really tried the newer powders like RL33
 
I'll second what danr55 said. Retumbo made my .264 sing and would be my first choice for overbores. It is also very temp stable in my setup.

Try the 33 and let us know, nice thing about the big 338 is if you don't like it that case gobbles up a pound pretty quick.
 
I have used it in my 300 RUM and have mixed feelings about it. I think the burn rate would be great for your gun and it did seem more temp stable than other powders. That being said, it takes a lot of powder to complete the loads in my gun, load data is tough to come by, and it isn't easy to find in stores. Good luck!
 
33 was the only powder Alliant suggested on their website. Retumbo works great for 250gr bullets. I was looking for something better for 300gr.
 

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