XCR Forum banner
1 - 13 of 13 Posts

·
Registered
Joined
·
165 Posts
Discussion Starter · #1 ·
I went ot clean my XCR after 2 range sessions of about 210 rounds.
I used on the first session Rem UMC, S&B, Fiocci and the last {90rds} S&B.

When I pulled the FP assembly it looked like this:

or


It had alot of brass marks on it and part of the brass was still in the FP hole! That looked like this:


.....and the brass pulled from the FP hole:


CLEAN it looks this way:



I had absolutely NO failures of any kind ~ this was a shock to me.

So what is the problem ~ Ammo? or FP area?
 

·
Registered
Joined
·
2,031 Posts
I find that rifles with rotating bolts running a lot of gas tend to shave more brass, i.e., my 10.5" AR gets more brass on the bolt face than the others.

I wouldn't be shocked if the same holds true for the XCR... are you running it on a forceful gas setting? have you tried turning it down? That would be the first thing I would try if it was bothering me. I wouldn't think it would affect function within a reasonable number of rounds between cleaning as long as the rifle is running fine otherwise.
 

·
Registered
Joined
·
165 Posts
Discussion Starter · #3 ·
I find that rifles with rotating bolts running a lot of gas tend to shave more brass, i.e., my 10.5" AR gets more brass on the bolt face than the others.

I wouldn't be shocked if the same holds true for the XCR... are you running it on a forceful gas setting? have you tried turning it down? That would be the first thing I would try if it was bothering me. I wouldn't think it would affect function within a reasonable number of rounds between cleaning as long as the rifle is running fine otherwise.
I have it on #2.
I think that is a less forcefull isn't it?
 

·
Registered
Joined
·
165 Posts
Discussion Starter · #5 ·
I put three full mags (90 rds) thru it today of Aguila 55gn FMJ.
The breech looks quite a bit cleaner.
I am not going to clean it and shoot another 120 rds of the same ammo then pull it out and compare.
If it is anywhere close to the original problem then I'll call RA.
 

·
Registered
Joined
·
165 Posts
Discussion Starter · #7 ·
I have put 6 mags thru it using another brand of ammo (Aguila) and it doesn't look anything close to the brass-infected pics. I am begining to suspect the S&B as the culprit.
 

·
Registered
Joined
·
165 Posts
Discussion Starter · #10 ·
New picture of uncleaned after 270 rounds of Aguila 55gn FMJ.



Compare that with the clean and brass-infested pics.

Must be the S&B ammo ~ will try another brand and retry S&B again to compare.
 

·
Registered
Joined
·
5,177 Posts
keep in mind, brass sheds on everything... We use this little brass tool to tighten on certain gun parts, and we have to be very careful with it, because too much pressure leaves a big, ugly brass mark on the stocks. Maybe your ammo was an odd batch, made with a lower quality brass?
 

·
Registered
Joined
·
165 Posts
Discussion Starter · #12 ·
keep in mind, brass sheds on everything... We use this little brass tool to tighten on certain gun parts, and we have to be very careful with it, because too much pressure leaves a big, ugly brass mark on the stocks. Maybe your ammo was an odd batch, made with a lower quality brass?
Yeah, I am pretty sure it's the S&B Ammo ...must be something different abiut the brass mixture. I had a similar situation with S&B 7.62 x 39 in my SKS. It's kind of unexpected as I have never had any problem wit S&B pistol ammo.
 
1 - 13 of 13 Posts
Top