Gunsmithing 6.5 Creed Shoulder Flattening

[Flatwater618]

Need some help from the hide....

A guy sent me this pic to see if I knew what was going on with his chamber. I know the smith that spun up this barrel (Proof CF 6.5 Creed), never heard a bad thing about him.

Brass only deforms on firing...WTF is causing this? No signs of over-pressuring. Could the chamber be shorted? How in the world would you get a flat portion for the shoulder to bump up against like this? I haven't reamed enough chambers to know, thought I'd ask those who are way more experienced than me on here.

Rifle is still dead on accurate, overall case length didn't change considerably...just the shoulder deformation.

He's shooting Hornady 6.5 ELD-X Precision Hunters, not reloads.

Any ideas?

 

[FCS]

Appears that chamber was pre-cut with a drill bit, pre cut went a little too deep.

 

[Flatwater618]

Thanks FCS, makes sense. Anyway to repair this without replacing the barrel?

 

[Flatwater618]

Thanks! That makes total sense.

He's going to send it to me...trying to figure out if it's viable to repair or if we just need to replace it...

 

[FCS]

Set barrel back enough to remove that void on shoulder, 1/4” would probably do it, 1/2” definitely will.
“Easy” fix

 

[Steel head]

Set barrel back enough to remove that void on shoulder, 1/4” would probably do it, 1/2” definitely will.
“Easy” fix

This.



Big oops on builders part!




Or proprietary double shoulder wonder cartridge????
6.5 Creedmostest!

 

[6brshooter]

Yo dog, I heard you like shoulders. We put shoulders on shoulders. In xhibit voice. Should be easy to clean up in 1/4" deeper cut.

 

[Ledzep]

And here I am worrying about buffing out tiny rings on shoulders....

 

[Steel head]

And here I am worrying about buffing out tiny rings on shoulders....

My first Shilen prefit left rings on the brass shoulder that were quite pronounced.
that barrel was a HAMMER!

maybe there’s something to this?????

 

[Flatwater618]

Hahaha...it's fire forming for a new wildcat. The 6.5 FS...Flat Shoulder.

Once I get it SAAMI approved I'll send you guys a reamer.

Thanks fellas, I'll let you know how it turns out once I get it sent to me.

 

[spife7980]

Cant decide between a 30° and 40° shoulder?
Why not both?!

 

[Steel head]

Cant decide between a 30° and 40° shoulder?
Why not both?!
View attachment 7164498

need to include the Sheldon 70degree shoulder in there as well for ultimate performance.

 

[Flatwater618]

With a little work, may be able to get it to 30, 40, 70 and 90 degree shoulder. Could be the next big thing...like stairs to accuracy!

 

[Steel head]

With a little work, may be able to get it to 30, 40, 70 and 90 degree shoulder. Could be the next big thing...like stairs to accuracy!

I’m contemplating incorporating it into 7 saum

7mm MLPM sounds OAF!

7mm My Little Pony magnum.

 

[RTH1800]

My opinion is the barrel was threaded and chambered by a hack.
only way I would consider touching it would be to cut all threads off and start over. Threads are likely as poor as chamber.

 

[b6graham]

nice mistake on an expensive barrel.

 

[BadQ]

That's one for the dumpster

 

[b6graham]

That's one for the dumpster

Nooo recut it or make it a 6.5x284 or something

Waste of a $700 blank if you throw it away

 

[RTH1800]

Going to be dealing with that artist of smithing’s threads and not enough shank to move it forward.

 

[Easy_E]

New Hackley improved !

 

[Wannashootit]

Just....WOW....

We don't need no stinking shoulder to headspace! Get the case OAL just right and you're good to go...

I have no clue how this could even happen, sure looks like the "pre-bore" went far beyond the shoulder datum, how could it have possibly passed a simple go/no-go gage check?

I test fire/check function on every barreled receiver before it gets sent to the customer, an absolute must for me.

 

[Campguy308]

Dayum. I'd question the threading job too. What a screw up.

 

[Brux]

Is there a reason your not sending it back to the smith that chambered it?

 

[Flatwater618]

I think the guy is done with the original smith which is why he was reaching out to me for help (guy that owns the rifle is a friend).

I'll get him taken care of one way or another. May see if I can turn this one into a 6.5PRC barrel!

 

[b6graham]

I think the guy is done with the original smith which is why he was reaching out to me for help (guy that owns the rifle is a friend).

I'll get him taken care of one way or another. May see if I can turn this one into a 6.5PRC barrel!

6.5PRC might work.

or 6.5SS which should push the shoulder even further forward

or be the first to 6.5PRC AI

 

[Ledzep]

Usually there's enough shank on Proof barrels I'd think you could push the shoulder forward .15" or whatever it is to get past that drill hole and keep it a creedmoor.

 

[Flatwater618]

That's what I'm hoping for...fingers crossed. Guess I'll see when I get it here next week!

 

[MTyotehunter]

Weatherkley double shoulder wildcat, now I want one??

 

[Rubicon Precision]

If that was a customer supplied blank, no way should the customer have to eat that.

Given enough quantity, eventually every builder is going to mess up. Bottom line is if you wreck a customer’s part, you replace the part. I don’t care if you blew up a customer supplied carbide reamer in a customer supplied CF barrel, you accepted the job, you are responsible. That said, the builder should be made aware of this and given the opportunity to make it right.