Brass jags

[DShortt]

Just curious,

Those of you who don't like brass jags because you say it gives you false results.....

It's brass, not copper.

You're leaving it in the bore for how long? Yet the blue is off the jag?

Curious as to how you justify that reasoning.

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Forum Boss:

Here is a photo from page 4 of this thread which will be locked. Yes non-aluminum (copper, bronze, brass type) jags CAN react to many types of solvent, and provide a false positive. The solvent here was BoreTech Eliminator:



Photo by member Jelenko, who posted:

Here's a pic of three different brass colored jags taken 60 sec after wetting with BT Eliminator.
To take the pic, I rolled each one slightly so you can see where it was on the patch.
The one on the left essentially 'instantly' showed some blue.
The one on the far left did not 'instantly' show blue but did within 15-20 sec.

To me, for the purpose we use jags, showing blue within 30 seconds fits my definition of 'instant'.

After the pic was taken, the one of the left showed much deeper blue.

 

[Thud]

It will give a false reading. You might of missed chemistry in school. Brass is copper and zinc.
Get some aluminum jags and see the difference.

 

[DShortt]

So.....

You took a bore blank, unfired, ran a patch through with a brass jag, then ran a patch with an aluminum/nylon jag.

One was immediately blue and one was not?

I've a bore blank. Perhaps I should just try it myself.

 

[Shooter13]

One was immediately blue and one was not?

Correct.........if it has been maintained or new.

 

[Clancy]

So.....

You took a bore blank, unfired, ran a patch through with a brass jag, then ran a patch with an aluminum/nylon jag.

One was immediately blue and one was not?

I've a bore blank. Perhaps I should just try it myself.

Yea. Why is that so hard to believe?

Just lay both on a paper towel, hit them with a few drops of any good bore cleaner and come back here to apologize.

 

[DShortt]

Yea. Why is that so hard to believe?

Just lay both on a paper towel, hit them with a few drops of any good bore cleaner and come back here to apologize.

If an apology is warranted, I'll give it.

 

[DShortt]

 

[K22]

Since most are now using bore scope as the basis to determine if the bore in sufficiently clean, does it matter whether you use a brass or non-brass jag? In other words, the bore scope image will reveal if the copper has been removed.

However, as Clancy (post 5) stated, a simple test of putting some copper solvent on each type of jag will positively answer this question. The solvent will react with the brass jag. This has been known since Jurassic Era.

 

[DShortt]

 

[DShortt]

 

[DShortt]

I suppose that's not really copper solvent.

 

[Thud]

try sweets for a more visual result

 

[DShortt]

try sweets for a more visual result

So it only happens with Sweets? Never noticed that mentioned before. Funny. This cleans all the copper out of any bore I've ever put it in.

 

[DShortt]

 

[K22]

New aqueous based solvents may not react with the brass; I don't know, never tested them.

But those containing ammonia will, such as Shooter Choices, Sweets, and even Hoppe's 9 has a small amount of Ammonia. This is easy to test.

 

[DShortt]

10 minutes later ......

 

[DShortt]

Maybe it'll be blue in the morning?

 

[DShortt]

Yea. Why is that so hard to believe?

Just lay both on a paper towel, hit them with a few drops of any good bore cleaner and come back here to apologize.

What say you now?

 

[DShortt]

It will give a false reading. You might of missed chemistry in school. Brass is copper and zinc.
Get some aluminum jags and see the difference.

How's that chemistry working out?

 

[DShortt]

So, anyone reading this thread. Put a brass jag on a patch and drizzle some copper solvent over it and see for yourself.
Instantly blue?