Thoughts on twist rate for 32 " barrel 300wm

[TXAoudadKlr]

I comfortably get 3200 FPS with 230's and 3350 with 215's in a 30" barrel, 4 groove 1:10" twist. I am not running either hot according to my pressure trace.
Funny thing, my 3 groove 28" barrel gets almost identical velocities. I have ordered 3 Bartlein barrels, another 2-3 month wait and I will post results. Have gone with 3 groove 1:10" twist in 30 cal and 1:8" twist in 264 cal.

The 215 above surpasses the 230 by 1200yrds according to my app, Ballistic AE.
The RUM would be better suited for the extra heavies.

Cheers.

OAL?

 

[MagnumManiac]

Magnum Manic, what powders and loads are you using?
Thanks

The powders I run are Retumbo, RE33 and what I think is US869. The latter powder is pulled 20mm cannon powder, unsure of it's designation, was told it and H50BMG are all the same. It's labelled as AR2218 here in Australia.
I don't post loads, my COL is above 3.6" in these barrels.

The RUM in the same barrel length, 30", would be considerably faster than what the WM can achieve.

Cheers.