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 My Saint Edge 10.3” is over gassed. 
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Location: Puyallup
Joined: Tue Sep 18, 2018
Posts: 3063
Have chrono data!

Chronoed this stuff today. Same 18" rifle.

PMC m855 avg. 2,931.

Indumil m855 avg. 3,026.

So yeah, the Colombian stuff is definitely hotter. Makes sense why you were having no issues with the other stuff, but problems with Indumil.

Your gun must be just at that point of overgassing, or headspace tightness, that the Indumil "crosses the line", so to speak. I'm guessing, anyway.

ETA: I said before, the stuff didn't "feel" any harsher than anything else, but I think that's because this particular 18"er is a smooth shooter, I don't remember the gas port size, but it was within spec, rifle length gas, H-2 buffer, everything seems smooth in it.

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Thu Feb 01, 2024 6:47 pm
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Location: AZ
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Got the upper back from SA. Hope to take it to the range this weekend and test that ammo again.
Meanwhile, this video should eliminate all my suspicions regarding the ammo.
Apparently, this Indumil ammo is GTG.


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Mon Mar 11, 2024 1:18 pm
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Location: no longer in a van down by the river (... at least anywhere near South King County)
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Any news on this?
I was also wondering if the gun exhibits similar problems with other known good ammo. Or, any other over-gassed symptoms with known good ammo.


Mon Mar 18, 2024 7:23 am
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