338 Norma mag twist rate?

[Dixon88]

I am getting ready to build a 338 Norma magnum and I have a question on the barrel. This gun will be used for shooting 1000+ and I plan on shooting the 250gr. Berger otm hybrids. I will be using a stiller TAC 338 action and a hawk hill 30" barrel in MTU contour. So my question is - What twist rate is recommended for the 250gr. bullets at a 30" finish length?
The Berger twist rate calculator shows a 1:9.5 will work better over a 1:10 but I would like to hear from everyone before I place my order. Any information will be greatly appreciated!
Thanks - Riley

 

[DaveTooley]

i've chambered thousands of 1-9.35, 1-9.5 and 1-10 for the 338 Lapua. All shooting a 300 gr. bullet. No problems with any of those twist rates. If I was just going to shoot just 250's I'd go with a 1-10.

 

[paperpuncher]

I used a 9.5 twist Obermyer on mine It shoots the 250s and 300 equally well. Im very pleased with mine love the round