6XC excessive neck clearance question

[Geordie]

Hi All.
I am having a Brux 6mm barrel chambered in 6XC soon and will be using Peterson brass.
I have a choice of 2 reamers. One being David Tubbs he sells in his website which has a neck diameter of 0.278 and he says his neck clearance is 0.004".
As a benchrest shooter that seems excessive but does anyone have a 4 thou clearance and does it perform without problems?
The other reamer is a 0.270 neck and I will have a tight neck of 0.0015/0.002 which my 6BRA has without issue.
Thanks

 

[Clancy]

I’d much rather have .004 than .001/2
I absolutely won’t shoot with less than .003.

 

[Geordie]

I’d much rather have .004 than .001/2
I absolutely won’t shoot with less than .003.

Hi Clancy. Thanks. I presume that there's no problem with the longevity of your brass necks? Plus I guess if it's good enough for David Tubbs then it's ok for us mere mortals! But I just wanted to find out any pitfalls in using his .278 neck reamer.

 

[BKA]

.278 = no neck turning required
.270 = turn necks for uniform neck wall thickness and to provide your preferred neck clearance

 

[Walt Krafft]

My fired necks measure 0.277. My loaded round neck diameter is 0.2685. I anneal every 2-3 loading cycles. The last group of 500 cases was recycled after 12 loadings. It is very rare that I see a split neck, less than 1 in a hundred.

 

[urbanrifleman]

It ain't broke. No need for fixing.