30-06 neck size question

[David Brown]

SWMBO has acquired a few things from her father, one is a 30-06 CZ which she was intending to keep. I went to load up some rounds to test in it from a stock of fired brass that her father had been using, and when I was recapping with the neck sizing die, the case sailed right through.

A quick check of some brand new Lapua brass and the die felt right. Projectiles sat right, but the fired brass was so wide in the neck that a 30 cal projectile will fall in.

My question is besides full length resizing, what is causing this? A really worn out chamber? That's all I can put it down to.

[deye243]

SWMBO has acquired a few things from her father, one is a 30-06 CZ which she was intending to keep. I went to load up some rounds to test in it from a stock of fired brass that her father had been using, and when I was recapping with the neck sizing die, the case sailed right through.

A quick check of some brand new Lapua brass and the die felt right. Projectiles sat right, but the fired brass was so wide in the neck that a 30 cal projectile will fall in.

My question is besides full length resizing, what is causing this? A really worn out chamber? That's all I can put it down to.

there is no problem here if it were tight then pressures would sky rocket now if you had a precision cut target chamber then that might

have some resistance , but on average there would be any where between 0.004" and 0.010" of clearance on the neck for a factory

rifle .


EDIT did the pills fall in after neck sizing

[sandgroperbill]

Probably a silly question, but...

It hasn't been rechambered and rebarrelled to another Cal?

[David Brown]

Bill, no it has not been re-chambered or not that we are aware of!

EDIT did the pills fall in after neck sizing

I just had a bright idea………..I will go measure the die parts. Compare them to a 308. SWMBO's dad may have mixed up some parts in the dies (you know how old folk can get ) Despite the markings.

Has me thinking outside the box now.

Will report back!

[David Brown]

Bug found…..lord knows how much crud was in the collet…….no wonder to would not resize the neck and it just felt like it went normally in and out yet never changed a thing.

All good again. note to self……never trust anything!

[Hardcast]

Also David, because collet dies form from the outside, as apposed to the normal fls die pulling a sizing rod back through the case to size the neck, different thickness
brass can make a big difference to the finished internal size.

[Carter]

note to self……never trust anything!

Or at least clean it occasionally

[David Brown]

note to self……never trust anything!

Or at least clean it occasionally

Hey…don't go using good sound logic on me!!!!

Yeah, he was a bench rester, but as Cancer and SWMBO's mother going down hill with the C as well has impacted things, I reckon some things may have not been maintained so well as I expected.

Me…I am a bit AR about cleaning things and being operational at all times. And too trusting.

[lole]

Me…I am a bit AR about cleaning things and being operational at all times.

That's the way to be with firearms

[David Brown]

Yeah, my activities include, aviation, motor sport (retired) water skiing and boating, shooting, engineering…….none of these are any different in all respects. In fact they are all engineering.

[VICHunter]

You might like reading a book everyone once in a while.

You don't have to spend hours cleaning it afterwards