Help! 338-378 reloads

[Victor3Ranger1]

This is some data from my 338-378 and IMR7828ssc with 225 accubonds
View attachment 586756

Wow that is a lot of powder

 

[CoastalHunter]

Wow that is a lot of powder

speed don't make itself!

 

[Taylorbok]

Ammo mfg's aren't always constrained to the same powders we are. It might be something that is not available to the public.
If you have a Nosler manual you could look at what powder has a similar charge weight to what is in your case and start there.

 

[Bullbuck]

Lots of info on line, Hodgdon reloading data center is a good one.

 

[sable tireur]

This is the data from Nosler:

 

[Wrenches]

I'm using 114.0 grains of StaBall H D behind a 225 grain Swift A-Frame. 3290 average FPS