New Manufacture No4 Barrels

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Originally Posted by tbonesmith

The .303 barrels are 5 groove and are made to a major bore diameter of .310 instead of .311, twist is 1:14".
The .308 barrels are 4 groove and 1:14" twist.

Headspace is slightly adjustable on the .303 barrels, but they are not short chambered.

That's about all I have got.

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WHAT!!

1-14 twist for both!! I guess they expect us to only shoot the light stuff.

Tbonesmith, Took a look at your website and see the Armalon barrels you have on there. What are the specs on the 303 british?

The "short-chambered" assertion also appears on Criterion's website description of thier U.S. Krag barrels. However, inspection of samples has revealed that these barrels (for a rimmed cartridge very similar to the .303 British), are not, in fact, "short-chambered". It appears whoever is writing this stuff for Criterion is more familiar with their products for rimless cartridges. See ad copy at .30-40 Krag Barrel

There's a discussion of this topic at Krag Collectors Association Forum - Has anyone installed a Criterion Barrel on a Krag?

i have a stoopit question...

will the new barrels have the same loose chamber dimensions of the factory barrels.

i hate getting only 3 reloads out of my brass:bitch::bitch:

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Originally Posted by Rwsgunsmithing

WHAT!!

1-14 twist for both!! I guess they expect us to only shoot the light stuff.

Tbonesmith, Took a look at your website and see the Armalon barrels you have on there. What are the specs on the 303 british?

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Sorry guys it's 1:10" for the .303 & 1:12.5" for the .308... Now that sounds a bit better.

Sorry for the confusion

Quote:

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Originally Posted by tbonesmith

The .303 barrels are 5 groove and are made to a major bore diameter of .310 instead of .311,

8><----

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So for my Barnual 174Gr flat base FMJs that are 0.310~0.3105 they sound perfect.

:D

Now I need to get one in NZ!

---------- Post added at 10:22 AM ---------- Previous post was at 10:21 AM ----------

Doh, I missed the headspace/short chambered thing....So this barrel should simply be a screw in job?

regards

There must be some mix up on the specs as the P14 barrel they offer in 303 british is a 1-10 twist.

I'm gonna call them tomorrow and see what is what.

Quote:

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Originally Posted by Rwsgunsmithing

There must be some mix up on the specs as the P14 barrel they offer in 303 british is a 1-10 twist.

I'm gonna call them tomorrow and see what is what.

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Yes mate, it is 1:10 I just made a mistake.

3 relaods out of your brass........... Yoiu need to be using different brass!

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Originally Posted by tbonesmith

Yes mate, it is 1:10 I just made a mistake.

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My apologizes I walked away from my computer for awhile and then finished my post. I guess I should have refreshed the page before finishing it.

I just had an email from Josh at Criterion. The barrels will be "short chambered" the same as the Krag barrels are. There is a raised collar of steel that is higher than the flat of the back of the breech around the chamber. This is designed to be finished reamed down to fit individual bolt heads. My uneducated opinion would be to finish ream to a new spec #0 every time. It's a learning curve for me as I said before but the method appears good in theory. To quote a gent who's opinions rate high on my priority list, "I'm only a mere armorer"!