7.62mm barrels

[Peter Laidler]

I think that it's being totally unrealistic to suggest that starting a total external re-profiling exercise from scratch using a large outside diameter rifled barrel blank would be easier (thread 6) It's totally unnecessary because you already have it - on the old barrel! What's more, it's all accurately done at the factory using the original drawings and passed by the MoS examiners. All you gotta do is to reline it!

Shot out/worn out/rusty barrels appear to be unavailable simply because by definition nobody in their right mind would a) want to buy one and b) as a result, feel the need to advertise any for sale! That's just my logical pragmatic view.#

Here's another point to ponder too. As soon as you pin a barrel with a transverse cross-pin, the barrel is weakened at that point and is only as strong as THAT diameter. (not a STRICTLY mechanically correct fact as there are certain tensile and stress related variables. But it IS weakened!)

Obviously some of the operations such as drilling out the barrel length would need to be done commercially and that would be relatively cheap. Look chaps...... the gun trade in the UK were boring out No1 and 4 rifle barrels AND BREN GUN barrels into shotguns by the thousands...... And that was with the bodies attached! What's the difficulty in boring out to.7" over .410"? Drilling a Bren barrel is simplicity itself. But this time you ain't paying for a desk bound geek to draw up the radial and lateral profile on his CAD!
Nope, I'm of the 'can do' era of graduates/engineers/Armourers as opposed to the 'its too difficult' generation. They never thought like that when they were making the Bren to start with.....

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[ActionYobbo]

I think that it's being totally unrealistic to suggest that starting a total external re-profiling exercise from scratch using a large outside diameter rifled barrel blank would be easier (thread 6) It's totally unnecessary because you already have it - on the old barrel! What's more, it's all accurately done at the factory using the original drawings and passed by the MoS examiners. All you gotta do is to reline it!

Shot out/worn out/rusty barrels appear to be unavailable simply because by definition nobody in their right mind would a) want to buy one and b) as a result, feel the need to advertise any for sale! That's just my logical pragmatic view.#

Here's another point to ponder too. As soon as you pin a barrel with a transverse cross-pin, the barrel is weakened at that point and is only as strong as THAT diameter. (not a STRICTLY mechanically correct fact as there are certain tensile and stress related variables. But it IS weakened!)

Obviously some of the operations such as drilling out the barrel length would need to be done commercially and that would be relatively cheap. Look chaps...... the gun trade in the UK were boring out No1 and 4 rifle barrels AND BREN GUN barrels into shotguns by the thousands...... And that was with the bodies attached! What's the difficulty in boring out to.7" over .410"? Drilling a Bren barrel is simplicity itself. But this time you ain't paying for a desk bound geek to draw up the radial and lateral profile on his CAD!
Nope, I'm of the 'can do' era of graduates/engineers/Armourers as opposed to the 'its too difficult' generation. They never thought like that when they were making the Bren to start with.....

so you get a 303 Mk2 barrel and bore it out and insert the liner then when you profile the outside of the barrel to L4 profile then the parts on the original barrel become separated when the metal joining them together is removed. so in essence you end up with the same thing but by a different method except your parts are free to wander

There are guys in the North South Skirmish Association who lengthen and line barrels all the time. One is Robert Hoyt, but I'm not sure if he still does it. He cuts the barrel if it's not full length, then inserts a shouldered liner of the proper length(42"for a M1842). He secures it with epoxy. I've not heard of one moving.

ever done a mag dump from a BREN 3 mags rapid fire, epoxy will let go before the second mag is empty

[CriterionBarrels]

That sounds like an interesting proposition. If we had a print and an order for 50+ barrels then it might be something we could tackle. An order of a couple hundred and we could probably manufacture them at a much lower price point. Tooling up for production would probably be the trickiest part.