269 neck is what i was looking for but did you have bad results with it?
Not at all. The rifle shot like a dream for over a thousand rounds. Turning necks just isn't my idea of time well spent. I just picked up my original 6mmBR rifle today from having the barrel set back 0.400" and rechambered with a reamer from Kiff ground to the same specs with a 0.271" neck.
I've heard stories that 0.271" may be too tight for some Lapua brass but I have 2,000 new cases from two different lots that I've measured the neck wall thickness on and they're 0.0133" to 0.0139" so I think I can shoot out enough barrels to cover the reamer cost.
I could make you a good deal on the reamer in the print. Only used once......