jb bore paste

How is it people still believe ammonia cleaners can damage barrel steel?

Take a piece of barrel steel and soak it in ammonia. I did that test 50 years ago. I took a couple of slices off a blued barrel and left them in Sweets 7.62 for a week - no affect at all. Left them for a month... no effect on the bluing nor the bare metal.

As the above post (119) stated, I believe those who think ammonia caused damage saw faults and flaws that were masked by fouling and the ammonia solution exposed those faults and flaws.

What the ammonia can do is clean the steel so well that if left clean and dry the steel will be susceptible to rusting... that's it. So after cleaning wipe your dry bore lightly with a gun oil. Wipe it dry before firing.

Nailed it. Thank you
 
OK, I'll bite and I'm going to try your experiment.

Sweets 7.62 says it can be left in the bore for extended times.

I used to make up my own ammonia solutions back in the day and they were much stronger than Sweets, to get out the Cupro-Nickel fouling.

Like I stated, I have a Win Mod 70 barrel that had been left with an ammonia/ballistol solution in the bore and it's now badly pitted.
 
Quote from Rifle Shooter


Choosing a good copper fouling solvent is critical to the health of your bore. Traditionally, the active ingredient in most dedicated copper solvents is ammonia. It works great on copper, dissolving it in pretty short order. However, it can etch the steel in your barrel, too, particularly if it’s left in for more than 10 to 30 minutes, depending on the strength of the solvent.

Modern “gentle” copper solvents utilize chemicals that are harmless to steel, and won’t harm your bore even if left in for extended periods. They take a little longer to dissolve the copper, but it’s well worth it.

It’s difficult to drive home strongly enough the risk inherent to ammonia-based solvents. Once, while touring the Norma Ammunition facility in Sweden, I had the opportunity to visit with one of the company’s lead product managers. This gentleman had qualified for four consecutive Olympics during his career. In other words, he knew shooting, and he knew rifle barrels.
 
The Rifle Shooter quote only gives a brief version.

Barrels are made up of conglomerates of elements to produce the fine products we have today. Not all of those elements are resistant to ammonia.
 
OK, I'll bite and I'm going to try your experiment.

Sweets 7.62 says it can be left in the bore for extended times.

I used to make up my own ammonia solutions back in the day and they were much stronger than Sweets, to get out the Cupro-Nickel fouling.

Like I stated, I have a Win Mod 70 barrel that had been left with an ammonia/ballistol solution in the bore and it's now badly pitted.

Ammonia is NH3 and I have left metal in ammonia for weeks, if not months and it hasn't pitted or corroded

Ballistol, i have no idea of what is in it - chemically ...
 
Metal in ammonia not corroding. OK what is that metal's composition???

Some metals will not show any effects from immersion in Ammonia, I fully agree with that. Many won't and depending on the composition of the metal used to make your barrels, it's very possible ''etching'' will happen, even after short immersion periods.
 
The only people who worry about ammonia corroding steel are rifle cleaners who are going off of old prevailing wisdom. Ammonia of both anhydrous and hydrate forms are so widely used in different industries, it's been studied to death. There are many scientific papers out there on the effects of ammonia on metals. Steel /iron ALWAYS gets a pass. If certain popular solvents caused staining or pitting in a barrel, it wasn't from the ammonia.
 
The only people who worry about ammonia corroding steel are rifle cleaners who are going off of old prevailing wisdom. Ammonia of both anhydrous and hydrate forms are so widely used in different industries, it's been studied to death. There are many scientific papers out there on the effects of ammonia on metals. Steel /iron ALWAYS gets a pass. If certain popular solvents caused staining or pitting in a barrel, it wasn't from the ammonia.

I truly believe that the ammonia cleans so well it unmasks faults hidden by fouling.
Also the advent of the bore scope has caused some folks to panic. A local firearms/ammo/ cleaning products dealer got a bore scope. Very handy when assessing the barrel of a trade in after he did a thorough barrel clean. Of course the new rifle has had several passes with a vaseline saturated patch, then a clean patch to make it look pristine.
 
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