a3 front sight post

[ssgross]

Just to convince myself I'm not going crazy, the marks do match up. Were the barrels marked when manufactured, or when assembled? I thought since all the replacement barrels I've seen already have witness marks on them they were pre-marked.
Attachment 113905

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[Doco overboard]

Just to convince myself I'm not going crazy, the marks do match up. Were the barrels marked when manufactured, or when assembled? I thought since all the replacement barrels I've seen already have witness marks on them they were pre-marked.
Attachment 113905

Just a thought, when you peer into the breech, does the barrel extractor cut seem to be off as much off as the front site is rotated?
I'm just going off the pictures supplied earlier in the thread, the front site band appeared to have a pretty good lean to it.

One time I had a replacement barrel either for a M17 or P14 that had the index mark off just a touch more than the index mark was wide. Luckily the manufacturer had cut the extractor slot generous enough that I could remedy the problem with a slight turn to he barrel.

The index mark on the barrel was just proud of the mark on the receiver but not past it much more than the width of the barrel mark so the movement was a couple thou at best.

[ssgross]

does the barrel extractor cut seem to be off as much off as the front site is rotated

Just took a look down the action. If I line my eye up to look right down the raceway for the right lugs down to the extractor groove...it looks to be off slightly in the same direction? could be bias too as well now that I confirmed the sight was off.
I also think now that I have the front sight off that my pics, not being perfectly aligned and level, exaggerated the misalignment. I think/hope it will end up being off by about the width of the index marks. You bring up a good point with the alignment of the extractor groove that I hadn't considered yet. Guess we'll have to wait to find that out too!

[browningautorifle]

the width of the barrel mark

That would be all the barrel would need to move so maybe not even take it off completely.

[ArtPahl]

OK, here's a thought: Why not file a little off the upper side of the sight key and then shim the other side until the sight lines up? Seems a lot less hassle and risk than trying to twist the barrel tighter (if you even can!). There's a good chance the barrel or receiver will get marred up, where as if you file the sight key.....what's the worst that can happen?

[ssgross]

trying to twist the barrel tighte

It's the other way...barrel is over turned and needs to come back a bit.

[ArtPahl]

OK then. Never mind. Do it your way.