Rifling in middle of barrel only?

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Rifling in middle of barrel only?

Post by horter »

G'day,

I'm looking for some information on rifling the centre of a barrel only...

This must have a name but I don't know what it is to search for it.

I found a random picture on a website of a barrel which was rifled in the middle only, and smooth inside both ends.

There is a foot note about it improving spin but nothing else?

Cheers.
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horter
 
New South Wales

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Re: Rifling in middle of barrel only?

Post by on_one_wheel »

They are called Probert barrels. Ian Thompson did a article in the Australian Shooter mag. Aug 2013
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Re: Rifling in middle of barrel only?

Post by Vati »

It's an artillery barrel thing though, no?

Not used in anything as small-beans as a rifle.
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New South Wales

Re: Rifling in middle of barrel only?

Post by VICHunter »

The theory is that the smooth bore at the end of the barrel smooths down any rifling marks on the projectile which are done to the bullet when fired.

Removing the burs creates less drag on the spin of the projectiles so that it remains the same for longer and slows down and a slower rate.

Pretty sure we're talking about tank canon barrels and the like though, nothing like this in a soliders/hunters rifle AFAIK.
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Re: Rifling in middle of barrel only?

Post by Elek »

Why wouldn't rifle barrels benefit from the same?

(What VIC explained above...)
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Re: Rifling in middle of barrel only?

Post by on_one_wheel »

They would but it comes down to $$$$$$$ Big dollar guns dont sell, at least in the volumes needed to justify it.
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Re: Rifling in middle of barrel only?

Post by Lorgar »

Elek wrote:Why wouldn't rifle barrels benefit from the same?

(What VIC explained above...)


It may well do, but like on_one_wheel said - $$$.

Very difficult to rifle the centre of a barrel only. On a canon barrel you have a lot more working room too. Imagine trying to rifle the middle of a .223 barrel only and how little space you'd have to work in...

Too hard for too little reward.
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Re: Rifling in middle of barrel only?

Post by horter »

on_one_wheel wrote:They are called Probert barrels.


Thanks guys.

Exactly the story I was looking for.
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New South Wales

Re: Rifling in middle of barrel only?

Post by Beau Nottage »

There's one "rifle" I know of which only had rifling the last few inches of the barrel, it's a holland & holland double barrel parradox, in 10ga. The idea being it could be used with shotgun shells or solid brass cartriges(hence the rifling) for african/American big game.
Not 100% sure on all the details but I think that's correct, read about it in a big game hunting book ages ago
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Re: Rifling in middle of barrel only?

Post by Press »

I know the one, just the last 3" of barrel are rifled.

740gr solid round to do the business on your game ;)
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Victoria

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Re: Rifling in middle of barrel only?

Post by Atter »

Press wrote:740gr solid round to do the business on your game ;)


Only 740? :shock:
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Re: Rifling in middle of barrel only?

Post by Baldrick314 »

Atter wrote:
Press wrote:740gr solid round to do the business on your game ;)


Only 740? :shock:


Yeah a real man would shoot a 2 bore 8-)
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Re: Rifling in middle of barrel only?

Post by Wheelbarrow »

Baldrick314 wrote:Yeah a real man would shoot a 2 bore 8-)


Awwwww yeah!

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Re: Rifling in middle of barrel only?

Post by sarki »

Jesus... What the hell were people shooting with that?
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Re: Rifling in middle of barrel only?

Post by Baldrick314 »

sarki wrote:Jesus... What the hell were people shooting with that?


Whatever the f**k they want!
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New South Wales

Re: Rifling in middle of barrel only?

Post by agentzero »

Baldrick314 wrote:Whatever the f**k they want!


LMAO :D
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