double gas relief hole

[browningautorifle]

It's not a vent.

You're just splitting hairs. Names. I know what the gas port does, or whatever you want to call it. I know how it's arranged in the construction of the barrel too. I was talking about the second hole's purpose and how it got there. The second part of you're post I agree with. I don't think it was factory done, which is what the OP's asking...

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[wtmr]

i feel its the original park finish so have felt was factory done, feel was error or done on purpose as some kind of test

[firstflabn]

You're just splitting hairs

Words have meanings. Technical terms have a purpose and "whatever you want to call it" does not compute. If it doesn't matter, let's call it a toaster from now on. Understanding the function of the components is fundamental to the timing of the sequence of events. That's why I asked which hole hole penetrated thru to the bore. That, along with the dimensional question, could raise an interesting question of when the piston cleared the hole vs. when the bullet exited the barrel. Not sure I have enough data on piston acceleration to draw a vaid conclusion, but would be fun to tackle the problem.

I tried to answer the OP's question, but I'm missing the point on how your level of understanding should influence my response to his question. Are you available to prescreen my future responses to others to make sure I don't risk offering anything you think you already know? Splitting hairs indeed.

[DaveHH]

It could just be a situation of a barrel that was miss drilled too close to the nut, put aside and when barrels became scarce, was taken out of the salvage bin, redrilled correctly and put on a carbine. If the nut threads cover the hole, no harm no foul, which would be what an inspector would think when he looked at it and passed to on to issue. But there is no data about this and therefore it is not even considered as anything beyond my worthless opinion.

[wtmr]

here is pic showing the winch proof and the short or fat P that qhmc used

---------- Post added at 01:15 PM ---------- Previous post was at 01:11 PM ----------

the second hole which is clearly releasing the gas if was continued would have come out front of gas cylinder if it had continued at angle it was at. Someone clearly stopped. The normal hole just has a lot of carbon build up, they are same size.

[wtmr]

here is rest of the stumper-check out the cam cut that some bubba gunsmith evidently did. My hunch is the thing was not cycling the best with the gas relief it was getting and bubba gunsmith spotted the heart shaped cut at top and thought was machining error?????? I have fired 30 rds thru it and its fires and works smooth as silk but is dirty gun to shoot, kinda like shooting russian ammo shooting LC or shooting a M2 full auto. Does anyone know any other reason it would have a cut like this??