Lapua 6mm Creedmore bushing size?

[tbrice23]

Anyone using a bushing die for Lapua 6mm Creedmore brass?
Are you using .270" for two thousandths neck tension?
If not but using 6CM brass could you measure the case neck wall thickness for me?
Thanks.

 

[Longtooth32]

Anyone using a bushing die for Lapua 6mm Creedmore brass?
Are you using .270" for two thousandths neck tension?
If not but using 6CM brass could you measure the case neck wall thickness for me?
Thanks.

My Hornady brass is .264 OD .012 brass wall thickness

Starline brass is .262 OD and .012 brass wall thickness

ETA, new brass that has not been resized....

 

[tbrice23]

Thanks.
That sounds right for Hornady. I'm getting Lapua brass. My Lapua 6BR brass is .0125".

 

[Longtooth32]

Thanks.
That sounds right for Hornady. I'm getting Lapua brass. My Lapua 6BR brass is .0125".

Im sorry...I just checked my caliper and it was not zeroed...I am getting around .016" for the brass neck thickness for both...

 

[tbrice23]

I measure with a ball micrometer .0125", caliper reads .014".

I do not trust my calipers for neck thickness.

 

[sedancowboy]

I measure with a ball micrometer .0125", caliper reads .014".

I do not trust my calipers for neck thickness.

Nor should anyone else a caliper can not measure the thickness of as small dia brass case.
For accurate measurement you must use a ball end micrometer.

 

[Longtooth32]

Thanks...learned something new today...

 

[tbrice23]

Thanks...learned something new today...

No problem .

By the way I'm working up loads for my 270wby and 170eol as we speak. The Mcgowen barrel is shooting really good with rl25 at 3190( brand new barrel) and PacNor is re-making the one that was not throated .375".

 

[Longtooth32]

No problem .

By the way I'm working up loads for my 270wby and 170eol as we speak. The Mcgowen barrel is shooting really good with rl25 at 3190( brand new barrel) and PacNor is re-making the one that was not throated .375".

When you posted this yesterday, I just got done screwing in my Criterion Match barrel (from Northland Shooters Supply), 1-7 twist, throated, 26", varmint profile, fluted, 6mm CM.

Working on 110gr SMK loads right now...

I even have a box of 115gr Bergers to play with...

Hopefully, I should be able to shoot it tomorrow...

 

[tbrice23]

Good keep us updated.

 

[Longtooth32]

Good keep us updated.

You want data...

First 100 rounds through my 6mm CM...what a sweet rifle...

On our left is working up 110 Sierras,,,

On our right are 115 Bergers...

Out of the back of my pick up with almost 20 mph winds rocking and rolling...

 

[MNbogboy]

Thanks...learned something new today...

Without a ball Mike you can get real close using this simple way to measure brass thickness with calipers.
1. Measure OD of neck with a bullet seated in it.
2. Then subtract bullet diameter (measured, not advertised) from the measured OD neck.
3. Divide the sum by two. This is your neck wall average thickness.

 

[bigdaddyWSM]

I use Gunwerks 6mm creedmoor brass & it was .0145-.0150 thickness, I turn mine to .013 & use the .288 neck bushing for sizing for a .002 grip on bullet.
CORRECTED!! Above↑ is my 6.5 creedmoor info, my 6mm creedmoor uses a .269 bushing.
I'm attributing my mistake on not enough coffee.

 

[tbrice23]

I use Gunwerks 6mm creedmoor brass & it was .0145-.0150 thickness, I turn mine to .013 & use the .288 neck bushing for sizing for a .002 grip on bullet.

.288????? I don't think so.