AR15.Com Archives
 Brass vs Copper jackets
EternalVigilance  [Member]
10/26/2005 5:35:55 PM
Is it true that brass jacketed ammo is less accurate then copper jacketed ammo because it doesn't "grab" onto the rifling as well? What about with a glock's rifling?


Remington Golden Saber's have a brass jacket, I just bought a bunch and I thought that I covered all of my bases. Now this. I guess I will have to shoot some of it up and see how it is.

Anybody know the difference in the two types of jackets?
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AssaultRifler  [Team Member]
10/26/2005 7:37:58 PM
for defensive pistol ammo, bullseye shooting accuracy isn't that necessary. So you pop a perp atw 7ft and get a .5" group instead of .46" with different bullets, does it really matter?

Brass is harder than copper and more expensive, hence the commonality of of copper jacketed ammo over brass jacketed.
EternalVigilance  [Member]
10/26/2005 9:25:09 PM
so whats the advantage to brass jacketed ammo, and what is the difference in accuracy?

Sgt_Gold  [Team Member]
10/26/2005 9:33:34 PM
I've tested Remington Golder Sabers, Speer Gold Dots, and Federal Hydra Shock's through both a P99 and Kimber TLE. I didn't get any practical difference in accuracy other than may own ability to hold a tight group. Remington probably uses brass because they designed their round to perform with a brass jacket.
AssaultRifler  [Team Member]
10/27/2005 7:38:56 AM
I dont think you can make a blanket statement one way or the other that jacketed bullets are more or less accurate than brass jacketed, depends on the specific bullets being tested, the load used, the gun, etc. You could read the gun rags where they test fire new guns with different types of ammo and glean information that way.
EternalVigilance  [Member]
10/27/2005 10:18:47 AM

Originally Posted By AssaultRifler:
I dont think you can make a blanket statement one way or the other that jacketed bullets are more or less accurate than brass jacketed, depends on the specific bullets being tested, the load used, the gun, etc. You could read the gun rags where they test fire new guns with different types of ammo and glean information that way.




this is good to hear. I guess there are other factors involved (jacket thickness, etc.).

So what your saying is that the WWB 9mm stuff works better with copper, but that is not necessarily the case with all types of ammo.


To be honest, I have only test fired 25 rounds of GS through my glock 19, which I consider my primary pistol. I seem to remember that it shoot just as well as everything else that I shoot. I shoot a butt-load of the WWB with the copper jacket. I know that some of you will give me shit for only test firing 25 rounds of my defensive ammo, but fuck we are talking about a glock here. Its not like there are any cycling or feeding problems with GS and glocks. Now that I am going to try out the 147's to make sure that it cycles properly, but I've never heard of any problems. If that goes well, I'll also burn up some of my 124 GS and look at the groups compared to my WWB. That will make me feel better about it.

Come to think of it I know that I have put a good 50 GS through my G22 that I used to have as well, and don't remember any accuracy deficiencies. To be honest, I never did shoot the .40 that well though. I was just learning then too.


Thanks for the info. I feel better now.
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