Muller Chokes Questions Part II

The second question I address frequently in regards to Muller Chokes is, "Why/how do your chokes stay so clean?"  Here's why:

Staying Clean: Conventional 17-4ph stainless choke tubes and especially titanium choke tubes get dirty with carbon build up and plastic from wad buildup because they are malleable materials. The build-up is compounded by the fact that most choke tube manufacturers bore their tubes at an extremely fast feed rate in their turning centers, screw machines and CNC lathes.  They do this to increase their production but the process results in a rougher surface finish than what is optimal.  Carbon and plastic adhere easily to the rough surface and once they do, they continue to build onto themselves creating a filthy mess. This is why ported chokes such as Comp-N-Choke, Extreme Chokes, Briley, Kicks, Rhino and Pure Gold become dirty so easily.  Muller Chokes uses a ceramic with teflon to create a surface that is like your non-stick frying pan.  Not only is it harder than any other choke tube in the World at 60+ RC (Rockwell hardness "C" scale, competitors are usually around 40 or less) but it is very slick so nothing can adhere to it.

Most conventional chokes start to build carbon and plastic after only 50 rounds.  Pretty soon, the build up causes pattern inconsistencies, point of impact variations and velocity deviation amongst other things.  These are things that I could not tolerate and it is one of the reasons I created Muller Chokes.  Every few hundred rounds, you may wipe the dust off of one of my chokes but you can say good-bye to scraping and brushing and spend your time shooting instead of cleaning your choke tubes.

Stay tuned for my next post which will answer the question, why do Muller Chokes produce consistently hard breaks at unbelievable distances? In the meantime, start practicing, warmer weather is around the corner!

Comments (11 Comments)

Thanks Peter, I am glad to hear you, as a good shooter have confirmed the velocity issue.
I have always said, if fast, light loads were the key then why do Turkey Hunters shoot slow, heavy loads?
It is because the slower you start out the tighter it stays and the more pellets you have the greater your chances of a hit/kill. Simple Physics.
But then again, if I owned an ammo manufacturing company and I could take the most expensive component out of a shell (the pellets) and add more of the cheapest component (powder) and sell it for more money thanks to ingenius “Speed kills” marketing slogans, well then…I’d laugh all the way to the bank as well.

Posted by Jimmy M on January 31, 2014

Hey Jim, I agree 100% , the excessive speed kills shot pattern faster than targets and game. I tested this on ducks with shot traveling at 1180 and a U2 and was able to fold mallards at 45-55 yards. I have shot springing teal at 104 yards with the U3 and 7.5 1250 1 oz and hit them well. When i switched to 1350 i wasnt hitting them. Keep up the good work this gear WORKS!!

Posted by Peter Davis on January 07, 2014

No Greg, a Tornado brush will not hurt your Muller chokes as they are harder than your shotgun barrel(s)

Posted by Jimmy Muller on January 28, 2013

Hi Tom, I have found that B&P, Fiocchi, Remington and Gamebore are amoung the best for farthest targets consistently.

Posted by Jimmy Muller on January 28, 2013

Hi Dan, Muller Chokes usually only foul when using reloads, but if you do have buildup, it is fastest and easiest to just use a scraper blade or knife to scrape out. That goes for any choke with buildup. After scraping with a blade, then oil and use a brass, copper or stainless barrel brush.

Posted by Jimmy Muller on January 28, 2013

Dan, I am sorry you have build up. This is not typical of our chokes. I have over 250,000 rounds thru my INV+ U2’s and have never had buildup. Usually, if there is ever buildup, it is from reloads. If the problem persists, send them back for a free exchange. I would just scrape the fouling out with a knife and then use Hoppes and scotchbrite to get it really clean, then try again.

Posted by Jimmy Muller on May 30, 2012

Jim, Since I ran a stainless steel tornado brush through my Muller Choke I am wondering if that could damage it?

Posted by Greg Friedmann on November 04, 2012

I shoot with an old Krieghoff K-32 with flush-top, Briley thin wall chokes. My gun was built in 1965. I bought it about 10 years ago with the tubes already there. I think they were after market installed. Does Mueller have a choke that would fit my gun? Would I need to send in one of my tubes for sizing?

Posted by mike norbutas on September 05, 2011


I purchased a set (U0-U4) of choke tubes back in mid-June 2011 for my Browning O/U 325: I use U2 for trap singles, but occasionally U1; a combination of U0/U1 for skeet. I use the Otis cleaning system, and have never checked the choke tubes for carbon… build-up. [I assumed that as I cleaned the barrels, the choke tubes would be equally well cleaned.] Today I removed the choke tubes to lube the threads of the barrel, and notice carbon building in the choke tubes primarily near the base. Given, this is after many hundreds of rounds, but it is evident that additional cleaning is required. What is your recommendation for a more thorough cleaning of Muller Choke Tubes?

Posted by Dan Gallagher on September 19, 2011

Hello Jimmy
I have a question about ammo,
can you tell me what do you think is
the best shotgun shells with round shot for long shots
45-55 yard shots
that is with your muller chokes

Thanks Jimmy

Posted by Tom on March 24, 2011

After many years of measuring and testing, I have found the following to be most consistent in regards to round shot and top quality components:
Remington: STS, Nitro 27, Nitro gold.
While there are some others, these tend to be the most consistent in quality.
Base the decision on availability and price level that you are comfortable with.
Thank you for your question.
Jim Muller

Posted by Jimmy Muller on March 24, 2011

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