noob error.
maybe we can get him to go cross-eyed in trying to keep up with the duplicate posts.
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Jamming up
- Thread starter jhites
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maybe we can get him to go cross-eyed in trying to keep up with the duplicate posts.
hunterbob
Well-Known Member
I had that problem.
308 , you need a case checker so you can measure the case after doing a full length size.
You also need the Lee factory crimp tool.
It crimps from the sides, after you install the bullet.
You need a cartridge checker also. To check with, as the last step. If it goes into that ok , it will chamber.
One other problem.
You may have to take .oo5" off the top of your cartridge holder.
Due to it not going into the die far enough, to resize correctly, just above the rim.
I had been reloading since 1973.
hunterbob
Well-Known Member
I had that problem.
308 , you need a case checker so you can measure the case after doing a full length size.
You also need the Lee factory crimp tool.
It crimps from the sides, after you install the bullet.
You need a cartridge checker also. To check with, as the last step. If it goes into that ok , it will chamber.
One other problem.
You may have to take .oo5" off the top of your cartridge holder.
Due to it not going into the die far enough, to resize correctly, just above the rim.
I had been reloading since 1973
jhites
Member
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cohunt
Well-Known Member
Looks like bolt over riding case-- magazine feed lip problems
para5063
Member
did you check if the gasblock is in the correct position and providing enough gas for it to cycle ? Is it a Rifle Length buffer system or Carbine Length buffer system ?
jhites
Member
I beleive it is getting enough gas. I beleive its a carbine but im only going by the diagram on my mat
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jhites
Member
Im not sure on what brand of barrel. The upper came frome a company online that i paid for the whole AR-10 ($1200) never got anything until i kept calling and hounding , they finally sent me this upper and my son punched out the lower from a blank. I tried pushing the mag up farther and loading a few rounds but they got stuck. I couldnt pull back and eject the shell without alot of force. And these bullets now have shoulder dents
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a couple of questions...........
when inserting the mag do you have the bolt in the catch or in battery?
the dents ARE coming via bolt upon ejection is why it has dents on the shoulder.
if the mag IS setting to high it will cause this issue.
try this..........manually load 1 round in the chamber, put bolt into battery, insert mag w/2-5 rounds then fire 1 round. remove mag and check the round on top, remove the round in the chamber and compare. if the round coming out of the chamber only has a dent you have your answer. if it and the top round in the mag has it also it's the mag as most likely feedlip issues. if the mag sits to high it's difficult to charge the bcg due to more than normal pressure from a loaded mag. i state that from experience of using asc mags in an aero precision lower. the mag catch location is about ~1/16" lower than pmags and most other brands and confirmed this with my AP lowers and other branded lowers.
when inserting the mag do you have the bolt in the catch or in battery?
the dents ARE coming via bolt upon ejection is why it has dents on the shoulder.
if the mag IS setting to high it will cause this issue.
try this..........manually load 1 round in the chamber, put bolt into battery, insert mag w/2-5 rounds then fire 1 round. remove mag and check the round on top, remove the round in the chamber and compare. if the round coming out of the chamber only has a dent you have your answer. if it and the top round in the mag has it also it's the mag as most likely feedlip issues. if the mag sits to high it's difficult to charge the bcg due to more than normal pressure from a loaded mag. i state that from experience of using asc mags in an aero precision lower. the mag catch location is about ~1/16" lower than pmags and most other brands and confirmed this with my AP lowers and other branded lowers.
With the upper removed and the bcg removed simply drop your cartridge into the chamber. It should go in very easy and kinda have a plunk to it. If you can push it down further after dropping it in, you need to make your cases smaller and make sure your coal isn't to long. Even a slightly snug fit is too tight.
I'm assuming that you already gave it a very good cleaning prior to shooting it. How much lube did you apply while trying to get the cartridge into the chamber?
Perhaps you have some excess in there still denting the shoulders.
I have had the same problem. I tried using 308 I had loaded for a Ruger m77, it fit and functioned perfectly the Ruger but jammed up in the DPMS ar10.
Also you should definitely chamfer and deburr every case every reload. In that picture above it kinda looks like it wasn't done, especially the one on the right.
I'm assuming that you already gave it a very good cleaning prior to shooting it. How much lube did you apply while trying to get the cartridge into the chamber?
Perhaps you have some excess in there still denting the shoulders.
I have had the same problem. I tried using 308 I had loaded for a Ruger m77, it fit and functioned perfectly the Ruger but jammed up in the DPMS ar10.
Also you should definitely chamfer and deburr every case every reload. In that picture above it kinda looks like it wasn't done, especially the one on the right.
