Wanting more velocity out of 338 WSM

[ruby76]

I am at 2.945" and was at 2650 with 59.5 gr H4350 with no pressure and sticking cases. I was 62.4 gr h4350 on first firing at 2760.

I was 62.3 grains of H4350 F210M 2770 at a coal of 2.887 at .015 off

 

[bobinpa]

VARGET will be your friend. I've been where you are. I love WSMs and H4350 is my go to powder in my 300 WSMs but it's too slow when you get into bigger calibers. At least that was my experience.... In my 338 WSM it gave fair accuracy but slow. I hit pressure quickly while trying to get up to a desired velocity. I am using 63 gr of Varget behind a 215 Sierra Game King at just a touch over 2900. My average velocity is 2910. I run Varget in my 358 WSM too. It pushes a 225 Sierra Game King at 2840ish.
The 338 has a Hart barrel and the 358 has a Lilja.

Don't start with my load. It's very close to MAX pressure. Back off of that and work up...

I hope this helps!

 

[bobinpa]

I am using magnum primers, same F210M

Just an Fyi, a F210M is not a match primer. F210 is a large rifle primer. The M is for match. The Fed 215 is the magnum primer and a Fed 215 M is the magnum match primer.