Bolt won't cam over with the cartridge fully in the chamber

[Ironworker]

I ordered 50 pcs of Peterson brass 22 Creedmoor and a box of Copper Creek Factory 22 Creedmoor. I loaded up 50 rounds, and two of the rounds wouldn't chamber in my rifle(could've been fired factory brass). I sized them in the same die ( Forester full-length sizing die) My press is a Forester co-axe. What causes this? Is there a tool to measure shoulder bumps? I will pull the bullets and run them through the sizing die again.
I pulled the bullet and re-sized the case. It is the same thing: the bolt won't close on the case. It measures precisely as other ammo that chambers just fine.

 

[Bill Norris]

I ordered 50 pcs of Peterson brass 22 Creedmoor and a box of Copper Creek Factory 22 Creedmoor. I loaded up 50 rounds, and two of the rounds wouldn't chamber in my rifle(could've been fired factory brass). I sized them in the same die ( Forester full-length sizing die) My press is a Forester co-axe. What causes this? Is there a tool to measure shoulder bumps? I will pull the bullets and run them through the sizing die again.
I pulled the bullet and re-sized the case. It is the same thing: the bolt won't close on the case. It measures precisely as other ammo that chambers just fine.

Did you measure the head thickness on those two pcs. against the other brass ?

 

[Rocketvapor]

Proud Primer?

 

[AlNyhus]

Do you have a comparator to measure case head to shoulder datum dimension?

 

[Ironworker]

Did you measure the head thickness on those two pcs. against the other brass ?

There is a discrepancy of 001-002 in the case head between the rounds that chamber easily and those that chambered hard. So why isn't the sizing die, sizing equally?

 

[Ironworker]

Do you have a comparator to measure case head to shoulder datum dimension?

No, what would be a good one to buy?

 

[Bill Norris]

There is a discrepancy of 001-002 in the case head between the rounds that chamber easily and those that chambered hard. So why isn't the sizing die, sizing equally?

Sizing die won't re-size the case head. The 200 line is as far as the die will reach.

 

[Rocketvapor]

If the ones that won't chamber were shot in another rifle the .200 zone of the case could be dragging.
Use black marker to check.

 

[LVLAaron]

No, what would be a good one to buy?

Short Action Customs if your wallet is deep. Hornady if you're cheap. Either is fine.

 

[Silo1616]

I ordered 50 pcs of Peterson brass 22 Creedmoor and a box of Copper Creek Factory 22 Creedmoor. I loaded up 50 rounds, and two of the rounds wouldn't chamber in my rifle(could've been fired factory brass). I sized them in the same die ( Forester full-length sizing die) My press is a Forester co-axe. What causes this? Is there a tool to measure shoulder bumps? I will pull the bullets and run them through the sizing die again.
I pulled the bullet and re-sized the case. It is the same thing: the bolt won't close on the case. It measures precisely as other ammo that chambers just fine.

On the two that won't chamber, does the bolt stop "hard" or "soft". IME a "hard" stop has been shoulder bump or neck length (bottoming against neck counterbore and/or taper). A "soft" stop means the case body not sized enough. No bullet of course.

 

[Ironworker]

On the two that won't chamber, does the bolt stop "hard" or "soft". IME a "hard" stop has been shoulder bump or neck length (bottoming against neck counterbore and/or taper). A "soft" stop means the case body not sized enough. No bullet of course.

Hard stop. But in Sunday's shooting session, a few of the cases chambered with heavy bolts but not extraction. This is once-fired Peterson brass, and using a Forester Full-length sizing die.

 

[jpx2rk]

Measure the overall length of cases, are the 2 cases that won't allow bolt closure too long? I had some factory 22-250 ammo and 2 rounds would not allow bolt closure at all. Pulled the bullets, and measured the case length, both way over the specs.

 

[boltfluter]

Occasionally Copper Creek loads can be hot. Especially for a first firing if planning to reload. You might see if you have other dies, maybe 6 Creedmoor, that is a little tighter at the base of the die. Had saved me a few times and saved some dinero! Good luck.
Paul

 

[Ironworker]

Occasionally Copper Creek loads can be hot. Especially for a first firing if planning to reload. You might see if you have other dies, maybe 6 Creedmoor, that is a little tighter at the base of the die. Had saved me a few times and saved some dinero! Good luck.
Paul

Well, that was the fix! I have a mighty Armory 6mm CM sizing die. I ran the two problem cases in it, and they chambered but with a medium hard bolt. But why doesn't my Forester die-size them all equally? Is the problem the brass? I've ordered some Alpha-Munitions Brass. They will arrive soon.

 

[Ironworker]

Also, I called up Primal Rights and explained my problem. He said it sounded like a die problem and I should set the die up on a lathe and remove .020.

 

[Kings X]

Could be the sizing ball is pulling the neck up. Can happen if you don't lube the inside of the necks.

 

[Herzo]

Check the neck diameter of the loaded cartridge. A tight neck can skyrocket your pressure,.

 

[slm9s]

Also, I called up Primal Rights and explained my problem. He said it sounded like a die problem and I should set the die up on a lathe and remove .020.

I would take a shellholder and take a little off the top and see if that solves the problem before you alter the die, if you're set on using that die.

 

[Ironworker]

I would take a shellholder and take a little off the top and see if that solves the problem before you alter the die, if you're set on using that die.

I see your point. I load using a Co-AXE press, so there is no shell holder.

 

[RGRobinett]

Also, I called up Primal Rights and explained my problem. He said it sounded like a die problem and I should set the die up on a lathe and remove .020.

Careful there - removing/shortening 0.020" from the die body, to attain more diameter reduction, may create excessive enough head-space to initiate rapid case-head separations!! The "no free lunch" axiom applies here: a proper die will both bump the shoulder AND sufficiently re-size the .200" DATUM diameter. RG