Need loaded neck diameter of 6.5x284 (140 class bullets and new unturned Lapua brass)

[Shynloco]

If you have an 80% count that have low spots, you must have gotten a bad run of brass, which occasionally happens even with Lapua. I've never seen that high a count of uneven thickness brass from Lapua in one batch and that's for six different calibers I use Lapua for. But I guess it happens. My point is simply that's not the norm of what I expect from Lapua and haven't experienced that quantity being off.

Alex

 

[hogpatrol]

I'm almost through turning 200 blue box 6.5x284 Lapuas to .145, and I have say that 80% of them at least have low spots untouched by the cutter. Does that qualify as a thin side? Possibly a semantic question more than a brass question.

Do you mean .0145 wall thickness?

 

[Clucknmoan]

Yeah, he means wall thickness. I turn mine to .0145 too and I don't know if I see 80% having a low spot untouched at .0145, but I can say it's common. My micrometer shows the necks anywhere from .0140 to .0165 new, so I turn them to .0145 which cleans them up to a .0005 consistency, good enough for me. I haven't turned as many Lapua 6.5 284 brass as some, but enough over the years to be safe to say it's not just a batch, this is consistently what I see.

I have no problem with it, no complaints with Lapua brass.

 

[T-shooter]

I'm almost through turning 200 blue box 6.5x284 Lapuas to .145, and I have say that 80% of them at least have low spots untouched by the cutter. Does that qualify as a thin side? Possibly a semantic question more than a brass question.

Did you check any before turning to see how much you are taking off? It probably doesn't matter if the low side is within a 1/2 thousandth. No need to cut the necks too thin.

 

[jmatters]

Do you mean .0145 wall thickness?

Yes; decimally challenged...

 

[jmatters]

Did you check any before turning to see how much you are taking off? It probably doesn't matter if the low side is within a 1/2 thousandth. No need to cut the necks too thin.

No, i didn't jot down the "before" number, but yes, I doubt if many are more than .0004" off. I check with a Starrett tube mike, and the worst low spots are seldom off that much (after turning).