youtube video on effects of some gun powder on powder coated bullets

[M1A4ME]

This guy says powders with high nitroglycerine contents damage the coating on powder coated bullets.

In case it's not been seen here before:

https://www.youtube.com/watch?v=TCk2-pmXLZQ

[Wobbly]

Thanks for posting this.

? As the video mentions you can look up the chemical content of any powder by looking at the MSDS (Material Safety Data Sheet) on any powder. The nitro content of all the popular Alliant powders seems to be 4-10%... including Sport Pistol which is marketed as being especially good with coated bullets.

http://www.alliantpowder.com/resources/sds.aspx

The one error I picked up was he mentioned Hodgdon Clays as being "single-base" (slang for without nitro), that may have been true at one time, but it is not true today since the MSDS says it has 10-30%.

https://www.hodgdon.com/resources/safety-data-sheets/


? So if you believe there is something to the nitro content of powders as the video maker is suggesting, and you are looking for powders without any nitro content (and we've had the conversation before) the number of so called single-base powders is dwindling ever since IMR reformulated it's line of pistol powders.

https://imrpowder.com/resources/safety-data-sheets/

These days it's pretty much down to Accurate Solo1000, VihtaVuori N300 series and Nobel Sport "Vectan Ba" line.

http://www.accuratepowder.com/products/msds/


? I believe this guy might be onto something, especially because of the general concern about powder measure hoppers, but his method of testing has a lot of holes and needs to be refined. For instance...
? The container should be something more chemically inert (like glass), so that it's not adding or subtracting from the reaction.
? Sitting in powder is not the same thing as the chemical reaction from burning powder. Let's see fired bullets captured in water and bullets left in a burning pile of powder.
? Let's see the test expanded to include Hi-Tek coated and store bought powder coated bullets, because his personal method of powder coating may be at fault.
? And of course, expand the testing to include more popular powders... including single-base powders.

 

[M1A4ME]

I wondered about powders/bullets subjected to "open air".

Maybe if he'd loaded the rounds, let them sit for a few weeks/month, then used a bullet puller to remove them so he could inspect the base of the bullet might have been more "real life" for any deterioration resulting from the powder/bullet coating over time.

Not much way to get samples of deterioration that may occur during firing of the round, not for most of us anyway.  I suppose a big enough tub of water might work.

[Wobbly]

Agreed. It's an interesting subject that needs more investigation.