Modern Hunter jamming issue

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gord1986

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I was out shooting my recently purchased modern hunter and I was having several issues with it. First off I was getting quite a few misfires. The round would load fine, and it would go click but not boom. When I would eject the round it had a dent in the primer, I would reload it and it would shoot fine on the second attempt.

My second issue is, I'm well aware that 3rd generation pmags won't function in the MH. But I was having quite a few jams using a second generation version. When I would look inside the action when it was jammed I could see exactly where the bullet was getting stuck. It almost looks like if I was to take a file and enlarge a taper, that might solve the issue.

I'm planning to take the modern hunter to ATRS this weekend, but before I go in with it I would like to have some knowledge about these problems so I can sound intelligent on the subject when I'm discussing it with them.

So I guess questions are, is this a regular problem with the first run MH? and if so what is ATRS doing about the issues?

Thanks!
 
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Well documented in the Modern Hunter thread that they don't like certain ammo for light primer strikes. Quite a few people having this issue with certain brands.

Check out the thread. A few people piped up about the details and listed the brands of ammo.
 
gord1986 said:
I was out shooting my recently purchased modern hunter and I was having several issues with it. First off I was getting quite a few misfires. The round would load fine, and it would go click but not boom. When I would eject the round it had a dent in the primer, I would reload it and it would shoot fine on the second attempt.

My second issue is, I'm well aware that 3rd generation pmags won't function in the MH. But I was having quite a few jams using a second generation version. When I would look inside the action when it was jammed I could see exactly where the bullet was getting stuck. It almost looks like if I was to take a file and enlarge a taper, that might solve the issue.

I'm planning to take the modern hunter to ATRS this weekend, but before I go in with it I would like to have some knowledge about these problems so I can sound intelligent on the subject when I'm discussing it with them.

So I guess questions are, is this a regular problem with the first run MH? and if so what is ATRS doing about the issues?

Thanks!
Click to expand...

It sounds like the bolt carrier is not fully engaging the lugs. As the bolt carrier moves forward, it causes the bolt to rotate and lock up with the lugs in the barrel extension. If there is not sufficient lubrication, or adequate 'wearing in' of the bolt carrier/barrel extension contact point, then the firing pin is held too far back to properly strike the primer. It almost acts as a fail safe in that capacity. For the first approximately 300 rounds, it needs to be SLOPPY wet with a light gun oil such as G96. If your hand isn't a mess putting the carrier back into the rifle, it's not enough.

I'm currently working on a video to show proper field stripping and lubrication for the modern hunter, as this is our number one question we receive, and the answer is almost always, add more lube. The other side to this is using the proper lube, thick lubricants that 'feel' smooth to you, aren't a good solution until the bolt carrier has worn in sufficiently... or ever depending on opinion) because they create a hydraulic effect, which interferes with proper cycling.

You are absolutely not alone in asking these questions, as our primary customer base have all been bolt action shooters and that's where they draw their experience from, myself included. It took a bit of getting used to seeing the degree of lubrication required, and pounding rounds down range to see my own Modern Hunter really start to shine. They also require a different technique for shooting than a bolt action, I guess I've been spoiled with a Jewel trigger at around 15oz for too long.

Cheers,
Shaun
 
Thank you for your very informative response. I did put quite a bit of oil in it when I cleaned it. I found the problem with it misfiring improved significantly after I fired 50 or so rounds down the pipe.

However the problem withat the jamming, I could see exactly where the bullet was catching when the bolt was trying to slide it out of the magazine. There is a chamfered edge there that the bullet should slide up as the bolt forces it forward. However the tip of the bullet gets stuck just below the chamfer and the gun jams..it looks like if I took a small round file to it and increased the chamfer that would fix the problem. However I'm very hesitant to try that on such an expensive gun haha. If I press up on the bottom of the magazine with some force it will sometimes close and chamber the round. It's almost as if the chamfer is too small, or the magazine isn't seating high enough in the lower receiver.

If I brought it in to ATRS could one of your gun smith's have a look at it?
 
What ammo? hunting bullets with soft points are not going to work. Mine likes pointy match bullets like Match kings, Berger and loves plastic tips like Amax. If you try to install the mag with the bolt closed it wont seat all the way and you will have troubles also.

Wade
 
Thanks for your response Wade.

I was shooting mostly MFS surplus ammo. They are pointy FMJ.

My buddy shoots it in his M305 all the time and has never had any feed or misfire issues.
 
Wow, you seem to get very informative and helpful responses in this forum. If this had been the black rifles forum there would be dozens of guys going "I knew this rifle was a POS" etc etc when really it likely just needs to be broken in and lubed. Enjoy that rifle!

Ps I have heard about the primer issue being with surplus/bulk ammo with hard primers. Your average factory ammo should work well.
 
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It's a really nice rifle, I really like it. I really just would like to get to the bottom of why it keeps jamming on me. I know ATRS is a solid and reputable company and that they will stans behind their products.. surely it's just something small and simple.
 
6MT said:
Well, I had issues with Nosler match .308. After 15 blown primers, I realized the rifle doesn't like that stuff. Your results may vary. The Nosler stuff is only for the bolt guns. Have fun!
Click to expand...

Same here. There is a lot of HOT ammo out there. Blown primers chewed up brass ejector marks and burnt fingers because the brass is so hot when you pick it up. For best results use 4895 and mild service rifle loads and you will get tight groups and all your brass will land in a nice pile and it wont be hot or damaged.
 
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