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05-04-2017, 04:58 PM
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New M&P15 won't take Hornady ammo?
Has anybody had problems with Hornady ammo 5.56 or .223 (I've tried both) As soon as I got the M&P I loaded up a few hornady's in a mag to check the functionality of the gun. It chambered the round and when I tried to eject the round, in order to feed it another, it jammed. Long story short I could not eject the first round without mortaring the rifle.
This ONLY happens with hornady ammo. It runs federal and Russian **** just fine.
Has anybody had this experience or have any advice?
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05-04-2017, 05:28 PM
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Check the ammo with a gauge.
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05-12-2017, 10:54 PM
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Can you please explain what that means? Thanks!
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05-12-2017, 11:27 PM
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A case gauge will verify that a case or cartridge is dimensionally within specs so that jams and malfunctions don't occur. If a case is too large, it won't fit the gauge and may not fit your chamber either. There are a number of gauges on the market. The only one I'm familiar with is the one I use, a JP Enterprises gauge. I think it cost around $25.00.
Some may tell you a gauge is not needed, but if 100% reliability from gun and ammo is a concern, you need one, particularly if you ever use handloaded ammunition.
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05-13-2017, 11:44 AM
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Gauge usage
Quote:
Originally Posted by rockquarry
A case gauge will verify that a case or cartridge is dimensionally within specs so that jams and malfunctions don't occur. If a case is too large, it won't fit the gauge and may not fit your chamber either. There are a number of gauges on the market. The only one I'm familiar with is the one I use, a JP Enterprises gauge. I think it cost around $25.00.
Some may tell you a gauge is not needed, but if 100% reliability from gun and ammo is a concern, you need one, particularly if you ever use handloaded ammunition.
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I have a set of gauges for all my reloads it is highly recommended when reloading if it fits the gauge it will fit the chamber.
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05-13-2017, 01:07 PM
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I don't think the OP is reloading... sounds like commercial ammo.
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05-13-2017, 01:18 PM
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Right, that's what he implied in the post. With the information he gave, sounds like the ammo is certainly worth checking, even if the problem should be something else.
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05-13-2017, 02:49 PM
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I had a similar problem with a shotgun and Federal shells. It turned out the chamber on the shotgun needed polishing to the point that all other ammo fed perfectly but Federal didn't. All it took to fix the problem was to polish the chamber very slightly. I emphasize very slightly. Following advise I found on a board many years ago I used a brass cleaning brush mounted on a drill. I ran the drill for about 5 seconds with the brush inside the barrel chamber and I never had another single issue. Who knows why that ammo was actually sticking but the fix worked. I've never had another shell stick in that shotgun
Last edited by C J; 05-13-2017 at 03:33 PM.
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05-13-2017, 05:05 PM
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CJ, sounds like you have a Remington 870 Express...
OP, separate your upper and lower. Remove the BCG and drop a round into the chamber. Then tilt the upper back where the round should slide out... if it doesn't, then you can start looking at ammo and / or chamber.
If it does slide out easily, start looking at the BCH... specifically the extractor.
Maybe make a video and post here so that we can see exactly what you are doing when it fails...
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05-13-2017, 10:32 PM
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Quote:
CJ, sounds like you have a Remington 870 Express...
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Yes I do. And it hasn't missed a beat in the last 9 years. No rust either for those that think they are all rust buckets.
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05-13-2017, 11:41 PM
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Quote:
Brdanie2 wrote:
It chambered the round and when I tried to eject the round, in order to feed it another, it jammed. Long story short I could not eject the first round without mortaring the rifle.
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Please explain why you were ejecting the round.
Please explain what you mean by "jammed"? That is, do you mean that when you pulled the charging handle, the charging handle would not move or the charging handle would move, but the round would not eject?
Please explain what you mean by "mortaring" a round.
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05-14-2017, 11:05 AM
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Quote:
Originally Posted by hdwhit
Please explain why you were ejecting the round.
Please explain what you mean by "jammed"? That is, do you mean that when you pulled the charging handle, the charging handle would not move or the charging handle would move, but the round would not eject?
Please explain what you mean by "mortaring" a round.
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05-14-2017, 02:38 PM
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Whatever it was you posted, cyphertext, just came up as a big black box.
With all due respect to whatever you might have been attempting to answer on behalf of Brdanie2, the questions were intended for him/her to answer so that from the answer, the problem might be illuminated.
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05-14-2017, 02:44 PM
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Quote:
Originally Posted by hdwhit
Whatever it was you posted, cyphertext, just came up as a big black box.
With all due respect to whatever you might have been attempting to answer on behalf of Brdanie2, the questions were intended for him/her to answer so that from the answer, the problem might be illuminated.
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I posted a video of "mortaring" from Youtube... bet ya a dollar that it is exactly what the OP is speaking of.
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05-14-2017, 02:48 PM
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Usually a jam like the OP had is caused by max spec ammo and minimum spec chamber. I've seen it happen a number of times with handloads when the shoulder is not bumped back enough.
A lot of shooters will tell you that mortaring is dangerous and you can usually open the bolt by using a screwdriver to pry back the BCG from either the ejection port or from the bottom if you can separate the upper from the lower. Prying on a rifle with a screwdriver is something fresh out of Bubba's bag of tricks.
I'd send it back and have S&W look at it.
Addendum: The OP will not be answering any questions. The original post is ten days old and it was his first post. This thread has turned into a lesson for other shooters that may be having similar problems.
Last edited by MichiganScott; 05-14-2017 at 02:52 PM.
Reason: addendum
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