Is this barrel still safe to chamber?

[Dave in WI]

Screwed up threading tenon when prepping to chamber barrel. I removed the threaded/screwed up section. Full diameter shank is now approximately 1.100" long. This is a 6.5 Rem Varmint profile.
Looking for constructive feedback from knowledgeable smiths whether this is still safe to chamber.

 

[okie]

what cartridge? grendel yes 6.5x 300 wby mag NO

 

[VA_XTC_Shooter]

what cartridge? grendel yes 6.5x 300 wby mag NO

whats the rule of thumb for required shank diameter/length for a specific cartridge? Or can you point to a source for that information?

 

[okie]

whats the rule of thumb for required shank diameter/length for a specific cartridge? Or can you point to a source for that information?

IDK. nope. need to get a real gunsmith to tell you. try butch lambert or jackie schmidt.
I bet they chime in soon---there are many others here as well

 

[tobnpr]

Checked Roy Dunlap's book "Gunsmithing"...oldie but goodie...

You've gone past the cylinder into the step as you noted.
Dunlap says chamber wall thickness should be no less than 2/3 as thick as the diameter of the body of the cartridge.

Say, case is 1/2" diameter- that means minimum 1.17" for the length of the case- which is about full diameter barrel. You're only going to have roughly half the chamber in the cylinder section of the barrel.

I'd say hard "no"- I'd never do it.

 

[jackieschmidt]

If you look at a factory Remington barrel, it is only 1.200 at the very point of the recoil lug and tapers pretty steep from there.

here is a old REM 3006 barrel. you are going to have more meat than that ahead of the action face

 

[hoz53]

Screwed up threading tenon when prepping to chamber barrel. I removed the threaded/screwed up section. Full diameter shank is now approximately 1.100" long. This is a 6.5 Rem Varmint profile.
Looking for constructive feedback from knowledgeable smiths whether this is still safe to chamber.
View attachment 1288984

what is diameter of shank? what cartridge are you thinking of? i think Hinnants book has some info on this

 

[Will Henry]

It should be fine. You could have turned the tenon down, re-threaded, and sleeved it. Then thread the sleeve to fit your action. Too late for that now but something to keep in mind if the need arises in the future. I would have no problem with fitting and chambering that barrel. WH

 

[jackieschmidt]

Checked Roy Dunlap's book "Gunsmithing"...oldie but goodie...

You've gone past the cylinder into the step as you noted.
Dunlap says chamber wall thickness should be no less than 2/3 as thick as the diameter of the body of the cartridge.

Say, case is 1/2" diameter- that means minimum 1.17" for the length of the case- which is about full diameter barrel. You're only going to have roughly half the chamber in the cylinder section of the barrel.

I'd say hard "no"- I'd never do it.

So by this formula around 90% of all Remington barrels since 1948 are unsafe?

 

[WayneShaw]

I would, done it many times.

 

[Hal]

Look at model 70 feather weight barrels.

Hal

 

[Will Henry]

4140 barrels can be a lot thinner than the carbon manganese used by some early makers and probably a little thinner than 416.
Parker Hale barrels, which were not 4140, were contoured similarly to the Winchester featherweight. It is not uncommon to see jugged chambers in magnum chamberings with the 308 Norma being especially prone to this. WH

 

[tobnpr]

So by this formula around 90% of all Remington barrels since 1948 are unsafe?

Didn't write the book...
As said above, a 6.5 Grendel is one thing, a 6.5-300 completely different.

Could be perfectly safe. I'm not an engineer, and simply decline to do work that I feel may be pushing the limits of safety. I err on the side of absolute safety if I have any concerns or doubts.

Everyone makes their own decisions. What I refuse to do as a riflesmith- because the liability risk just isn't worth it in my opinion (and mine's the only one that matters in that regard) isn't the same as what other smiths might do, not to mention hobbyists without liability exposure.

No different than not building a .338 LM on a standard long action. Some do it, I won't

 

[msalm]

You don’t say what cartridge you’re wanting to chamber in, but I wouldn’t have any problem using that barrel for a 6.5 RSAUM on down….certainly no issues with a Creed. At the shoulder of the case you still have more diameter than any Remage pre-fit

 

[Dave in WI]

Thanks for all of the replies, gentlemen. This was going to be chambered in 6.5 Creed. I've already got a replacement barrel on the way. I was going to try to sell this one, but was questioned about its safety. Would look stupid in a standard stock with the shank not matching up with contour inlet. But would probably look OK in a chassis with a straight barrel inlet.

 

[INTJ]

Thanks for all of the replays, gentlemen. This was going to be chambered in 6.5 Creed. I've already got a replacement barrel on the way. I was going to try to sell this one, but was questioned about its safety. Would look stupid in a standard stock with the shank not matching up with contour inlet. But would probably look OK in a chassis with a straight barrel inlet.

No barrel is safe for a 6.5 Creed.......

 

[boltfluter]

Assuming the shank is 1.250, you could turn it down a little to extend the cylinder section, and maybe it would look a little better in the stock. Just a thought.

Paul

 

[bapayton]

Didn't Ackley have a formula for barrel minimum wall thickness as well? Not that he was a bastion of safety or anything...... Like an earlier poster said, if Winchester will chamber a featherweight barrel in it I wouldn't personally be scared.

 

[okie]

No barrel is safe for a 6.5 Creed.......

LMAO!!!