Sweets 7.62 / CR -10 copper test

Evil_Lurker

Evil_Lurker

New member
Okay, I set up 2 more pennies and am using Sweets 7.62 to see the effect. This bottle of Sweets is now close to 4 years old (11/06), so it may not be as "aggressive" as if it were new.
Take that into account.

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Left: 95% copper/5% zinc
Right: 97.5% zinc core, 2.5% copper plating

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Sweets applied with Q-Tip until entire surface was moist. (You can see the Sweets actually removed some copper on contact. Very aggressive).

Wiped with a patch after 15 minutes.

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Next, I covered both pennies with Sweets, straight from the bottle, until they had a "puddle", and let them sit 15 minutes:

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Then wiped them with a patch.

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Not much copper. I'm thinking my Sweets may have lost a lot of the ammonia content from being so old, it doesn't reek as much as I remember. It's also supposed to be brushed into the bore.

Underwhelming performance, but age may have caused it.

I'll try CR-10, it's the same age.
 
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Soaked for 15 minutes in a CR-10 "puddle" and wiped with patch. It pulled some copper from the brass penny, but very little from the plated one.

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I'll puddle CR-10 on the block for 15 minutes and see what it does.

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Not really except how to best clean the copper out of a penny... I mean barrel.

I wonder what the feds consider cleaning all the copper off a penny? Is that considered vandalizing?
 
This is not based on firsthand knowledge other than what I have read. What I read was that solvents like Sweets are high in Ammomia content and it leaves a film of Ammonia in the barrel and when it dry's it will cause heat fractures in the barrel when firing the Rifle.

Sounds resonable wether it's true or not.

Evil finds some KG 12 and see what happens to your Penny.
 
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I've been a Wipe-Out convert for some time now and I know how it can take copper out of a barrel. After seeing your tests I put some Wipe-out Patch-out on a penny and started getting blue very quickly. I should have used their Accelerator with it but didn't. On hand I also have some stuff including Butches Bore shine, Bore scrubber, and a few other products. If I get a chance this weekend I'll do the same kind of test that your doing. Dave
 
Quote:On hand I also have some stuff including Butches Bore shine, Bore scrubber, and a few other products. If I get a chance this weekend I'll do the same kind of test that your doing. Dave

Yeah, try it. I'm not going to go buy a bunch of cleaning products just to do a test, because I'm pretty much convinced Wipe-Out foam is the easiest, most thorough and safest way to get the copper out of my barrel.
My AR barrel doesn't pick up much copper, and I rarely shoot large numbers of rounds between cleanings.

Here's the penny info:

1962–1982 brass (95% copper, 5% zinc)
1982–present 97.5% zinc core, 2.5% copper plating

Quote:What I read was that solvents like Sweets are high in Ammomia content and it leaves a film of Ammonia in the barrel and when it dry's it will cause heat fractures in the barrel when firing the Rifle.


Yeah, that's why it tells you on the bottle not to leave it over 15 minutes and to swab the barrel with oil afterwards. If not, that ammonia will attract moisture out of the air and pit your bore. CR-10 has the same warning. And yeah, they're full of ammonia. They both about make your eyes water.
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Wipe-Out states it has an anti-corrosive in it and doesn't need to be oiled afterwards. Maybe that's the "film" we're seeing left on the aluminum.
 
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Quote: Try some Montana Extreme Copper Killer(50 BMG)!!!!!!

I don't have any!!!!!
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Or I would.

It's supposedly very good stuff, though.
 
i use sweets,and after i use it i run 3-4 dry patches,then 3 wet with butches boreshine,then 4 dry patches and i shoot a round to foul. thats how ive done it for years
 
I did a similar test a while back with Sweets 7.62 and Montana .50 BMG. I put a 20gn Vmax in a dixie cup with enough liquid that the bullets were submerged. Neither did anything after 15-20 minutes. I dumped out the excess liquid so the bullets only were submerged a tiny bit. Then the blue showed up about 5-7 minutes later. The Sweets definitely had more blue coming off the bullet. Not sure if the air exposure or time had the most to do with it. That Sweets is some pretty aggressive stuff.
 
Quote:Not sure if the air exposure or time had the most to do with it.

I did see it was turning blue faster when I was rubbing it on with the Q-Tip then when it was just sitting there.
My Sweets is out of date I think. It used to smell a lot stronger.

The Wipe-Out was having a lot bigger effect than Sweets or CR-10. I think that foaming action really works, and there's no ammonia in it.

Sweets/CR-10 etc. you can use at the range and be clean and back to shooting in just a few minutes. Wipe-Out seems to have to sit there and work for about an hour before the copper's dissolved.
So, I can see a use for having both.
 
Originally Posted By: Evil_Lurker the question is, are we learning anything?
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I learned they are all putting a dye in their product that when it comes into contact with copper turns a white cotton patch a pretty bluish color. None of them seem to *dissolve* copper worth a hoot.
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