hornady 5.56 ammo issues

mosin46

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Aug 11, 2010
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recently made aware of several reported (at least 1 on here) serious problems with frontier 5.56. mostly involving 55/62 gr. only used 75gr & i have used several C rounds with no issues and have about 400 left. so,am getting concerned about using it. i have a bunch of 5.56 TAP T2 and have found no problem reports about it. my simple comparisons show same weight,by look and web search same bullet,same POI in both my guns-16" not SBRs. rare blown primer reports in SBRs with 77gr IMI and anecdotal reports of it seeming "hotter" than some other 77s. anybody have anything on these issues?
 

celltech

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Jan 9, 2019
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If it does not have an issue in your gun, then don't worry about it. I have shot and chronoed Frontier 75, Magtech 77, and IMI 77 in a Wylde chambered bolt gun. As I recall the Frontier and IMI are running pretty toasty. And while the primers have a pretty good crater in them they have never blown.
 

nn8734

nn8734
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  • Feb 26, 2013
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    Not sure if you are asking about this specifically but Hornady’s 5.56 NATO 75g load is on the warm side and thus may produce a bit of over pressure in some 5.56 nato/223 wylde chambers. In two of my rifles (mod H and DD M4 Block II, each with suppressors) it shoots great but the brass does have extractor marks and occasional ejector mark. Throws empty cases at 2’oclock but never stove-pipes or jams.

    If the ammo you have been using has not caused any issues for you, I wouldn’t worry about it.
     

    rth1800

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  • Sep 16, 2009
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    I had a few thousand rds of Hornady Super Performance 75 grain ammo. Over 75% blew primers. Hornady did not care at all. I was surprised they ignored the liability aspect of it.
     

    nn8734

    nn8734
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  • Feb 26, 2013
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    @rth1800 wow, that’s crazy but have heard similar issues from a couple buddies that have used it in their rifles, primers literally falling out of fired cases, etc. I still have some of it but primarily shoot my clone of mk262 mod 1 nowadays. More accurate and a lot less temperamental.
     
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    S197

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    Nov 22, 2019
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    i know there is a tread about 55gr frontier and batch numbers to avoid, but it has been several months since I had herd of any problems with them. I’ll see if I can find the info.