Varmiter71
Well-Known Member
- Joined
- Oct 14, 2015
- Messages
- 135
I have been wondering how one times drilling the gas port so it winds up in a groove.
I can't explain it but there are several posts on LRH. Do a search.I have been wondering how one times drilling the gas port so it winds up in a groove.
I've heard different accounts of how jackets were stripped/burred from the gas hole as shown. Never experienced it myself.Just be like Faxon and don't worry about it'll be fine <-- sarcasm laced with irritation
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Nice pic for an amateur How did you get it? It almost looks like the BBL is cut off just in front of the hole?Just be like Faxon and don't worry about it'll be fine <-- sarcasm laced with irritation
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When the AMU started using the AR platform testing indicated improvement in accuracy putting the gas hole in the groove to avoid sharp edges in the barrel.I can't explain it but there are several posts on LRH. Do a search.
Thinking out loud here... A few choices might be to call customer service @ Colt, Armalite, Rock River,I have been wondering how one times drilling the gas port so it winds up in a groove.
Seems like it could help as being less stress on the jacket, but then again the bullet has already taken shape. As far as burrs goes, that can happen in other places excluding gas ports. Deburring where necessary is always best.When the AMU started using the AR platform testing indicated improvement in accuracy putting the gas hole in the groove to avoid sharp edges in the barrel.
Possibly? But at port the pressure is less than half of chamber pressure on a carbine system. Bearing length could make a difference. Removing sharp edges should cure it.I think possibly it could matter, like in the picture in post #3, which side of a rifling is affected. Like gears in a mechanism, there is a "load" side and a "coast" side. If the bullet is getting shoved out the barrel by 60,000 psi in a right hand twist, after the bullet jacket is initially scribed into the leade, the right side/face of the riflings would resist forward motion and force the bullet to twist/spin, but the left side/face of the rifling is more or less irrelevant I would think. Since barrels never have to operate in reverse!
Nice pic for an amateur How did you get it? It almost looks like the BBL is cut off just in front of the hole?