CMP Service Pistol - Bull Barrel

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CMP Service Pistol - Bull Barrel Empty CMP Service Pistol - Bull Barrel

Post by radjag on 8/11/2019, 7:34 am

The current competition rules prohibit Bull Barrels. I have not been able to find a clear definition of what constitutes a "bull barrel".

Can anyone help please.

As it relates to 1911's please.

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Post by james r chapman on 8/11/2019, 7:52 am

means bushingless coned barrels.

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Post by HogCommander on 8/11/2019, 9:09 am

Almost...threaded sleeves and integral bushings are allowed if they meet a few criteria (made of same material as the barrel and no more than .700 in diameter).

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Post by radjag on 8/11/2019, 9:58 am

Are these detàilled rules written somewhere?

Is a "no bushing" barrel less than 0.700" permitted?

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Post by HogCommander on 8/12/2019, 7:50 am

They're in the CMP rulebook for pistol competitions.  Here's a link to it on the CMP Competitions web site:

http://thecmp.org/wp-content/uploads/PistolRules.pdf?vers=041019

Chapter 4 has what you're looking for

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Post by radjag on 8/12/2019, 9:14 am

Thanks for the link HogCommander. I was given a hard copy of the CMP Pistol Competition Rules by my club's Match Director and I've read it through a couple of times.

As best that I can judge (and I'm more than ready to be corrected!) the only references to barrels in Chapter 4 are:-

4.1.1 d) Bull barrels are not allowed.

And

4.1.2 a) Barrel may have an integral bushing or threaded sleeve that is made of
the same material as the barrel, that has an external diameter of 0.700” or
less and that is not longer than 0.800” when measured from the muzzle.

I'm a newbie and don't know enough about the evolution of 1911's to understand the implications of these clauses, but, I guess that for a gun to be compliant it must have a barrel (or integral bushing/sleeve) whose muzzle end is no more than 0.700" OD for no more than 0.800" long. 

I tried searching for a definition of "Bull Barrel". This is a typical result:-
"bull barrel is a term to describe any barrel that is heavier than a standard barrel on a gun. Usually, bull barrels are thicker than a stander barrel, and this is where the extra weight comes from. One thing to remember though is that there is no standard size for a bull barrel. The bull barrel is just a term that has come about in the gun world, but there are no specifications for a bull barrel."

It seems that Bull Barrels were of more interest to "run & gun" shooters and there are more detailed rules and restrictions in their competition regulations. The terms "cone barrel" or "cone lockup" are common. The barrels that I've seen are, in any case, less than 0.700" OD, although the "cone" may be more than 0.800" back from the muzzle.

So, whilst I do now have more background on the term "Bull Barrel", I am very little closer to understanding precisely what the CMP Rules really mean.

I intend to communicate directly with competitions@cmp.org in order to get some clarification.

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