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Posted: 5/7/2023 6:02:17 AM EDT
[#1]
It’s more than likely a burr near the gas port, do you have a bore scope?
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Posted: 5/7/2023 7:00:12 AM EDT
[#2]
What cartridges or powder are you using?
"Copper Fouling Eraser" vaporizes copper in your bore and it needs to go somewhere -- which if it isn't out the gas ports on your carrier ends up inside and on the end of your bolt. |
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Posted: 5/7/2023 6:35:44 PM EDT
[#3]
There shouldn’t be too much of any burr on the gas port inside the bore after you shoot a few rounds unless it’s absolutely massive.
Is the buildup causing issues? |
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Posted: 5/9/2023 8:54:24 PM EDT
[#4]
I'm using plated 30 carbine round nose when they feed and 125 Hornaday fmj with enforcer. Every new barrel I swear I just don't get it. My old one is flawless never this mess
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Posted: 5/9/2023 8:55:49 PM EDT
[#5]
Thank you yes after 60 rounds it basically locks up and that copper is caked on like shit takes forever to get off thr bolt wipes off the upper fine
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Posted: 5/12/2023 1:50:12 AM EDT
[#6]
If I find the burr what do you recommend? The only thing that's ever worked is drilling out the gas port . Sad that I can do a better job then the factory what the heck.. but on 556 barrels I've never in My life recieved a barrel with this issue . Please help thanks
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Posted: 5/12/2023 7:50:13 PM EDT
[#7]
Could it have anything to do with the plated bullets ?
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Posted: 5/12/2023 8:01:01 PM EDT
[#8]
If you drilled the barrel's gas port out to too large of a diameter, that could be the problem vs the port having a burr. I don't know about a .300 blackout port diameter, but on a 5.56 gas port, if you drill it over .110", the jacket will shave off as the bullet passes the port.
JT |
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