Can someone tell me the neck thickness of Lapua brass for 308 Win?

I'm sorry I'm so late with an answer to this, but haven't been by in a while. My .340 neck Hart .308 takes the Lapua brass loaded and is from .337 t0 .338 depending on bullet choosen. HOWEVER consider lot to lot variation. Your lot could be different from mine. Federal nickel cases are about .340, those that I have anyway. I much prefer the Lapua however. This rifle was on the cover of Hart's brochure... a beauty it is.

Thanks. I went ahead & ordered .334 & .335 bushings with my brass & dies. Looks like they'll work.