Throat and Barrel Life Concerns. 7mm PRC + New Outlier Barrel + N570

Corey75

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Aug 19, 2025
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Just recently installed a new barrel that has now fired 100 rounds total. Running n570, brand new Peterson brass, cci 250's, and various 180s during my load tinkering. Every load was a a grain or two below Bergers book max. Following Boretechs instructions, I cleaned the barrel with Eliminator for two rounds. It still looks pretty nasty and I'm seeing some fire cracking at the throat already, and some other odd spots. I'm going to attach a few photos if anyone would care to take a look for me. I'm fairly new to the precision rifle world so I would appreciate some input on exactly what you guys are seeing.
 

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This is why I don’t bother using a bore scope. Ignorance is bliss

N570 is not known for being kind to barrels.
 
I agree. Lived that mindset up until a couple of months ago but now that I have a borescope, i can't stop looking haha
 
I would be more concerned with what looks like a gouge down the length of that one land.

My experience with N570 is that you'll be able to measure throat erosion about every 20 shots in a PRC.
 
Okay
I would be more concerned with what looks like a gouge down the length of that one land.

My experience with N570 is that you'll be able to measure throat erosion about every 20 shots in a PRC.
I'm very concerned about the gouge.

I just didn't know if it was build up of some sort or a gouge. I can confirm that it was not there when I installed it so i'm wondering what I did to cause it
 
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