6.5 Creedmoor & Lapua brass question

[Jeff A]

If someone is using new Lapua brass in their 6.5 Creedmoor, I would appreciate it if you could take a measurement across the neck and report the loaded diameter of the neck. Thanks in advance for responses.

 

[Charwell]

If someone is using new Lapua brass in their 6.5 Creedmoor, I would appreciate it if you could take a measurement across the neck and report the loaded diameter of the neck. Thanks in advance for responses.

.291

 

[Jeff A]

Thank you Ac guy. Anyone else see anything different?

 

[group therapy]

measured 5 and they were .291-.292

 

[waterdog]

Measured 10, .291-.292, most .2915. None under .291 and none over .292

 

[Jeff A]

Thanks again, Guys. It's nice to get different measurements because not many of us have high $$ mics. Now we can order a custom honed die. I'm thinking .289"

 

[brantfredrickson]

Thanks again, Guys. It's nice to get different measurements because not many of us have high $$ mics. Now we can order a custom honed die. I'm thinking .289"

I just measured the neck thickness on a new lot of 100 pieces with a tube mic. a few at 13.5 to 14 thousandths and a few at 14 to 14.5 thousandths. Most at 14 thousandths. This is without neck turning. I neck turned that last lot down to 13.5 thousands. That required a .287 bushing. This time I will use a .288 bushing with no neck turning. My sizing/expanding mandrel will be .2627 to .2630. Hope this helps!

PS: In each lot of lapua the dimensions/weights are very consistant. However in lot to lot there is more variation that within one lot.

 

[dsinfour]

Run with the .289 that is what I use...Remember to keep them all in the center...

 

[group therapy]

Measured 10, .291-.292, most .2915. None under .291 and none over .292

ditto