How many of you use brass polisher?

scout said:
Any brass cleaner containing ammonia will make your brass more brittle and subject to splitting - I believe that the new Brasso does not have ammonia, but the original formula did. Nufinish or the Dillon formula work great.
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There have been many threads/experiments here on gunnutz that suggest your comments about the ammonia in brasso to be completely false.

Find a thread titled "Brasso my asso" or something close to that.......
 
joe-nwt said:
There have been many threads/experiments here on gunnutz that suggest your comments about the ammonia in brasso to be completely false.

Find a thread titled "Brasso my asso" or something close to that.......
Click to expand...

What is false about saying "I believe that the new Brasso does not have ammonia, but the original formula did"?

Stress corrosion cracking (SCC, aka season cracking) of cartridge brass is a well known phenomenon and ammonia increases the susceptibility of SCC. It's proven science. Annealing decreases the susceptibility to SCC. "Ammunition Making" by George Frost is a good source of info. Pull up the Australian military report MRL-R-778 report on "The Low Temperature Annealing of 7.62 Brass Cartridge Cases: Stress Corrosion Susceptibi8lity". If you must have a source from the internet, check out wikipedia and others:

https://en.wikipedia.org/?title=Brass
http://hghouston.com/resources/mate...er-and-copper-alloys/brasses/sc-cracking.aspx

"Stress corrosion cracking or "season cracking" occurs only in the simultaneous presence of a sufficiently high tensile stress and a specific corrosive environment. For brasses the environment involved is usually one containing ammonia or closely related substances such as amines, but atmospheres containing between 0.05% and 0.5% of sulphur dioxide or nitrites by volume can also cause stress corrosion cracking. Cracking caused by liquid mercury is the basis of the mercurous nitrate test for excessive internal stress in tubes and components of brass and other copper alloys specified, for example, in BS2871: part 3, BS EN ISO 196 and ASTM B 154. Mercury stress corrosion cracking of brass components can also occur in service due to contamination from broken thermometers."
 
Give it a rest. You know damn well my comments were directed at;

scout said:
Any brass cleaner containing ammonia will make your brass more brittle and subject to splitting - I believe that the new Brasso does not have ammonia, but the original formula did. Nufinish or the Dillon formula work great.
Click to expand...
 
I've used Lyman corncob until it stops working, I used Dillon blue media "booster" until I ran out and couldn't find it in my area, and now I use Lyman booster because it is readily available. I am not in a hurry, so if it takes overnight to get the desired results, so be it.

I like the comment earlier about "life is too short to shoot ugly ammo." I know it is not necessary for function, but I feel a certain pride of workmanship to have my reloads look better than factory ammo...
 
So I cracked open my Dillon Polish on about 1000 rounds. I twas a bit shinier, but not much after three hrs. I've polished about 6000 rounds before adding polish. Not sure if I need new media or not. Thanks for the feedback.
 
For anybody using the Princess Auto media how much polish are you adding? PA media seems much more abrasive than the crushed walnut.

I recently started using the PA media and added a big scoop of the old crushed walnut as it was coated in polish and I thought that might be just about right to prep the new PA media. Strangely enough the dirty old media comes out green and looks new again.

(Black at the bottom is old media, green in the middle is after tumbling)
IMG_1590_zpsedqazqdf.jpg
 
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