Falure of Multichoked Guns

[Salopian]

I would like to bring to everyones attention .

Please check that your multichokes are clean and tightly fitted into your barrels .

Yesterday a friend had the misfortune to destroy the barrels of a £25,000 gun because the bottom barrel choke was very slightly loose .

Gas and /or wad was able to get behind a thinwall choke and open it up like opening a tin can .

Completely ruined barrels .

 

[shootinguru]

Well if I had a £25000 gun it certainly would not be multichoked!

 

[Garwood]

Those thinwall conversions always look a little `on the edge` to me, very little metal left anywhere in the thread area.

OK in something with thick barrels I suppose.....

 

[Hamster]

I tighten mine with a tiny bit of force using a metal key and will routinely check them with fingernails during use, occasionally they need a mm turn or two and must say I have noticed others guns with extended types that seemed to need a half a turn  :mellow:  so I suppose what slightly loose means to different people. Either way my sympathies. 

 

[Will Hewland]

Slightly loose? Poor design if so?

I’m same as Hamid. I would never let more than a mm of turn looseness occur and if mine get even that loose, I will remove after the shoot and thoroughly clean the threads, barrels and chokes. 

 

[Sian]

It has been drilled into me by Tony to check my chokes regularly during a shoot and I have now extended chokes because it just makes it easier for me and  

I am almost obsessive about it now.

 

[Simbo]

I would like to bring to everyones attention .

Please check that your multichokes are clean and tightly fitted into your barrels .

Yesterday a friend had the misfortune to destroy the barrels of a £25,000 gun because the bottom barrel choke was very slightly loose .

Gas and /or wad was able to get behind a thinwall choke and open it up like opening a tin can .

Completely ruined barrels .

Pics please................ I could do with a laugh 

 

[Will Hewland]

Btw if anybody has a top tip for how to clean the barrel threads (which are a good way back from the muzzle), do let me know. I’m redefining the term awkward-struggle when I do it. You need a finger like E.T.

 

[jwpzx9r]

I was shooting a few weeks back and one of the guys had a DT10 which was multi and the chokes were very loose, I could move them easily with my finger n the end of them. I pointed it out him and he just shrugged his shoulders and got ready to shoot another round??

Btw if anybody has a top tip for how to clean the barrel threads (which are a good way back from the muzzle), do let me know. I’m redefining the term awkward-struggle when I do it. You need a finger like e.t.

Good old fashioned tooth brush... possibly ?

 

[Will Hewland]

I was shooting a few weeks back and one of the guys had a DT10 which was multi and the chokes were very loose, I could move them easily with my finger n the end of them. I pointed it out him and he just shrugged his shoulders and got ready to shoot another round??

Good old fashioned tooth brush... possibly ?

Ta, but that bit is not the problem. That leaves a big mess of loosened dirt in there. It’s how best to extract that from inside the barrel threads. I push paper soaked in gun cleaner in and rotate it to pick up the muck. Then I fit a spotless choke and remove it several times, cleaning the thread each time until the choke comes out spotless. Yes, I know, I’m a fussy engineer.

 

[jwpzx9r]

Ta, but that bit is not the problem. That leaves a big mess of loosened dirt in there. It’s how best to extract that from inside the barrel threads. I push paper soaked in gun cleaner in and rotate it to pick up the muck. Then I fit a spotless choke and remove it several times, cleaning the thread each time until the choke comes out spotless. Yes, I know, I’m a fussy engineer.

Thought that idea was too simple will   how about a bronze brush with a bit of kitchen towel wrapped round it that should clean it out?

 

[schmokinn]

Btw if anybody has a top tip for how to clean the barrel threads (which are a good way back from the muzzle), do let me know. I’m redefining the term awkward-struggle when I do it. You need a finger like E.T.

I use a chamber brush which has a crank type handle,insert it wind it and it gradually screws its way out cleaning the thread as you go and a squirt of oil to get rid of any debris.

Can't find an image of one anywhere now!

 

[Bebo]

It has been drilled into me by Tony to check my chokes regularly during a shoot and I have now extended chokes because it just makes it easier for me and  

I am almost obsessive about it now.

Makes you look a bit odd if you change to a fixed choke gun and you keep reaching for the end of the barrels for a choke twiddle.  Took me about 6 weeks to get out of the habit.

One good thing about the Browning 725 is how tight the chokes are.  They have what looks like a brass olive on the end that makes a really tight fit.  I can never get them out of my husbands gun, he has to do it.

 

[Will Hewland]

Nah.. any brush just flicks dirt everywhere. And would shred any paper I think. There needs to be a final washing and wiping exercise. 

On the choke itself, I spray some cleaner on, then use my thumbnail to press kitchen towel into the first turn of the thread; then rotate the choke so my paper/ nail travels the whole way to the end. That works brilliantly. I need to try a little hook tool to do this in the barrel, thinking about it..

 

[jwpzx9r]

Nah.. any brush just flicks dirt everywhere. And would shred any paper I think. There needs to be a final washing and wiping exercise. 

On the choke itself, I spray some cleaner on, then use my thumbnail to press kitchen towel into the first turn of the thread; then rotate the choke so my paper/ nail travels the whole way to the end. That works brilliantly. I need to try a little hook tool to do this in the barrel, thinking about it..

You have to try it first Will. I have been successful using a piece of Napier cloth wrapped around a bronze brush in the past. It does not tear and the brush gets it into the threads.

 

[jazzy]

Makes you look a bit odd if you change to a fixed choke gun and you keep reaching for the end of the barrels for a choke twiddle.  Took me about 6 weeks to get out of the habit.

One good thing about the Browning 725 is how tight the chokes are.  They have what looks like a brass olive on the end that makes a really tight fit.  I can never get them out of my husbands gun, he has to do it.

725 is an Invector DS system. DS stands for double seal, i.e. the brass olive. Agree they don't loosen at all in use.

http://www.browning.com/news/tech-terms/invector-ds.html

 

[PhilR]

In the good old days, when Beretta only had the mobilchoke system, their choke key had a threaded plug on one end with a slot from top to bottom for cleaning the internal barrel threads.

 

[Westward]

In the good old days, when Beretta only had the mobilchoke system, their choke key had a threaded plug on one end with a slot from top to bottom for cleaning the internal barrel threads.

It's called a thread chaser and both standard types of CG choke key have a chaser on the top. As it happens, CG chokes and barrels are so accurately machined that the threads don't seem to collect debris and are normally easy to clean. I've never needed to chase the threads on mine.

 

[ips]

Well if I had a £25000 gun it certainly would not be multichoked!

I am with guru on this ?