Why are 5.7 brass cases coated?

Reloading info for the 5.7x28mm

Moderator: Grantness

Post Reply
ryan77724
Junior Member
Posts: 3
Joined: 27 Mar 2019, 17:56

Why are 5.7 brass cases coated?

Post by ryan77724 » 27 Mar 2019, 18:00

Like the title says, why are 5.7 cases coated?

User avatar
panzermk2
Forum Supporter
Posts: 11684
Joined: 19 Aug 2008, 15:51
Location: Around here it's more like what can we shoot through next.
Contact:

Re: Why are 5.7 brass cases coated?

Post by panzermk2 » 28 Mar 2019, 09:28

For the function of the round. The 5.7 rounds does not operate like a comon rounds like 45,9mm etc. The brass needs a coating to properly cycle at the pressures the 5.7 operates at, extract etc.
Jay Wolf
Pr. Elite Ammunition

"Engineers, the oompa-loompas of science!"

Be'ein Tachbulot Yipol Am Veteshua Berov Yoetz
Image

ryan77724
Junior Member
Posts: 3
Joined: 27 Mar 2019, 17:56

Re: Why are 5.7 brass cases coated?

Post by ryan77724 » 06 Apr 2019, 15:01

Is this just applicable for the p90? What about in an ar?

User avatar
panzermk2
Forum Supporter
Posts: 11684
Joined: 19 Aug 2008, 15:51
Location: Around here it's more like what can we shoot through next.
Contact:

Re: Why are 5.7 brass cases coated?

Post by panzermk2 » 08 Apr 2019, 13:37

ryan77724 wrote:
06 Apr 2019, 15:01
Is this just applicable for the p90? What about in an ar?
Even more so with the P90/PS90


The Banshee was designed around caoted brass.

What the hell is the point of removing the coating?

Because you want pretty brass instead of brass that functions?
Jay Wolf
Pr. Elite Ammunition

"Engineers, the oompa-loompas of science!"

Be'ein Tachbulot Yipol Am Veteshua Berov Yoetz
Image

Buffman
Silver Member
Posts: 2909
Joined: 12 Jan 2009, 22:48
Location: SW Michigan
Contact:

Re: Why are 5.7 brass cases coated?

Post by Buffman » 08 Apr 2019, 18:03

the coating helps the round "stick" in the chamber slightly longer to allow the blowback action to do it's job safely :D

ryan77724
Junior Member
Posts: 3
Joined: 27 Mar 2019, 17:56

Re: Why are 5.7 brass cases coated?

Post by ryan77724 » 12 Apr 2019, 03:50

So how do you guys clean your rounds so you’re not removing the coating?

User avatar
panzermk2
Forum Supporter
Posts: 11684
Joined: 19 Aug 2008, 15:51
Location: Around here it's more like what can we shoot through next.
Contact:

Re: Why are 5.7 brass cases coated?

Post by panzermk2 » 16 Apr 2019, 10:11

ryan77724 wrote:
12 Apr 2019, 03:50
So how do you guys clean your rounds so you’re not removing the coating?

Covered here,

https://youtu.be/tWMmngceDiY
Jay Wolf
Pr. Elite Ammunition

"Engineers, the oompa-loompas of science!"

Be'ein Tachbulot Yipol Am Veteshua Berov Yoetz
Image

Post Reply

Who is online

Users browsing this forum: No registered users and 8 guests