reloads causing bolt assembly to hang up in AR10T

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10 years 6 months ago #37640 by NightForce
Replied by NightForce on topic reloads causing bolt assembly to hang up in AR10T
Hmmmm, I ran into a problem that sounds eerily similar to the one you describe.

When testing new builds I always like to run factory ammo initially to gauge the rifles fit, function, and performance. Just last week I was trying out a new build. I loaded a magazine with 5 reloads then 5 factory loads. This is the way I normally approach things.

The 5 factory rounds fired and ejected without without incident...however....the reloads wouldn't fully chamber and I had to actually remove the upper and tap on the bolt with a brass drift pin in order to remove it...

The load looked great and I could see nothing glaring. I event went as far as dropping them into a Wilson case gauge and all fit flawlessly....

These were older reloads and while they fit in the case gauge I have some newer loads that I'll try.......who knows, maybe these are on the hairy edge of go no-go...

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10 years 6 months ago - 10 years 6 months ago #37650 by MrMarty51
Replied by MrMarty51 on topic reloads causing bolt assembly to hang up in AR10T

NightForce wrote: Hmmmm, I ran into a problem that sounds eerily similar to the one you describe.

When testing new builds I always like to run factory ammo initially to gauge the rifles fit, function, and performance. Just last week I was trying out a new build. I loaded a magazine with 5 reloads then 5 factory loads. This is the way I normally approach things.

The 5 factory rounds fired and ejected without without incident...however....the reloads wouldn't fully chamber and I had to actually remove the upper and tap on the bolt with a brass drift pin in order to remove it...

The load looked great and I could see nothing glaring. I event went as far as dropping them into a Wilson case gauge and all fit flawlessly....

These were older reloads and while they fit in the case gauge I have some newer loads that I'll try.......who knows, maybe these are on the hairy edge of go no-go...

Were these reloaded with the "Small Base" die set ????
I think I would pull a coupleof bullets and try a resize on the reloads, see what that does.
Last edit: 10 years 6 months ago by MrMarty51.
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10 years 6 months ago - 10 years 6 months ago #37657 by NightForce
Replied by NightForce on topic reloads causing bolt assembly to hang up in AR10T

MrMarty51 wrote: Were these reloaded with the "Small Base" die set ????
I think I would pull a couple of bullets and try a resize on the reloads, see what that does.


No, these were RCBS standard dies which I've been using for years. I've never had this happen before but I do have more recent reloads which I'll try.

I may pull a few tips and resize again...
Last edit: 10 years 6 months ago by NightForce.

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10 years 6 months ago #37659 by MrMarty51
Replied by MrMarty51 on topic reloads causing bolt assembly to hang up in AR10T
When I purchased My M1A1, the guy I was dealing with, a good friend and an professional in the arms industry, asked Me if I would be reloading, why yes, He pulled a set of small base dies from the shelf and said to never use the standard resizing dies for an auto-loading MIL.spec firearm.
I took Him at His word and have NEVER had an issue with any rounds chambering or ejecting.
And so, I set up My bench for reloading.
When I decided to reload for My 30-06 bolt gun, I already had dies for that, but, I also have an M1, I went and bought a set of small base3 dies for that one too.
Never had one issue with it too.
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10 years 6 months ago #37664 by NightForce
Replied by NightForce on topic reloads causing bolt assembly to hang up in AR10T

MrMarty51 wrote: When I purchased My M1A1, the guy I was dealing with, a good friend and an professional in the arms industry, asked Me if I would be reloading, why yes, He pulled a set of small base dies from the shelf and said to never use the standard resizing dies for an auto-loading MIL.spec firearm.
I took Him at His word and have NEVER had an issue with any rounds chambering or ejecting.
And so, I set up My bench for reloading.
When I decided to reload for My 30-06 bolt gun, I already had dies for that, but, I also have an M1, I went and bought a set of small base3 dies for that one too.
Never had one issue with it too.


It looks as if I need to invest in a small base resizing die.....

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10 years 6 months ago #37666 by MrMarty51
Replied by MrMarty51 on topic reloads causing bolt assembly to hang up in AR10T
Whenever I hear about someone having chambering od eject issues with an auto loading rifle, using reloads, it seems that the issues have always been by using standard dies, or,as in this thread, possibly not fully resizing for some reason or the other.
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