I heard of the bad lots on Q3131A and have seen the list of lot#s to steer clear from according to a few arfcommers (maybe barrel issue though), from my research however i would of said prior to this list my first choice would of been Q3131A, so my question now is whether Federal XM193 is looked at as being more reliable now.

Is it true that Federal XM193 is used vs new (q3131a) material ? I don't understand how that would be possible as they aren't reloaded.
I've checked the ammo oracle and other sites but no recent info.

i have seen complaints on both ends.




i personally prefer q3131a as it is more accurate

Hi, eklikwhoa

How about feeding and reliability from your experience?

Dr. Jekel,

Federal XM193 and Q3131A ammo are equally reliable.

Federal XM193 ammo is not used or reloaded. . . see below.

Federal XM193PD is a factory second that has a minor defect.  The defect is probably cosmetic yet but is rejected before being sold to the military.  Some of these rounds may have slightly worse issues, such as dented casings, which can cause dangerously high chamber pressures.

Winchester Q3131A has some suspected lots.  Just stay away from those, since you already know which ones they are.

Federal XM193 is the same as Q3131A.

I suggest that you purchase the cheapest, in stock, mil-spec ammo that you can find (assuming that you have a 5.56 chamber, rather than a .223).  Your choices are either XM193 or Q3131A.

If you have a 1:7 twist barrel and want the "best" ammo for your AR, look into reloading so that you can duplicate the MK262 loading with a 77 grain match bullet.

Spend some more time on the ammo forum and all of your answers will eventually be answered.

Later,

. .. . .

edited: to change some typing errors. Sorry.

Quoted: Hi, eklikwhoa How about feeding and reliability from your experience?

i have never had any problems with feeding or reliablity with any rounds, even wolf

great I just spent $230 on 1000rds of XM193.....

I saw last year, the type of XM193 that was given to my bro-in-law who is an OK LEO.  It was the same box, same type I just received the other day, so I guess it can't be that bad.

I'm wondering could most people be talking about XM193"PD" instead? I heard this stuff is pretty bad.

I guess bottom line, as you stated both will have problems (they are 2nd's) so would you trust your life with a new random box of Federal XM193? Small vote please. It's not my primary choice but it's the only available at the moment for my refill.

i would shoot the "pd" stuff but the xm i would shoot all day and have without a single hint of failure.