Berthier Carbine sights are offset

[rayg]

Sorry but I just couldn't let go of this, had to prove it one way or another. It was hard to determine if the carbine sight was offset with the early model blade sights because it was hard to measure that. imore did a good job on measuring. I looked at the M16 carbine I just got and you can really see it on that sight. The sight on the M16 carbine was changed from instead of offsetting the sight on the barrel, they centered the sight and offset ground the sight about .090. It's as I said in my previous posts earlier, the bore points right of the sight center on carbines. And I also think I am correct when I said the reason why the bore needs to point more to the right of the sight on the carbine is because the carbines have much thinner barrels and the initial flex upon firing full power loads would be to the left because of the left hand rifling twist. This would cause the bullet to move left to the same as the sight. The low velocity cast bullets just didn't have enough power to cause that flex so they shot where the bore was pointed which confused the issue.
The carbine barrel is .510 dia and the Lebel and Berthier barrels are .585 dia. So the carbine barrel is .075 thiner which would cause the barrel to flex a lot.
Here's my earlier post on Gunboards questioning the sight vs bore zero. And the thread here. Ray.
http://forums.gunboards.com/showthre...rthier-Carbine
Why is does my French Berthier 8mm carbine have flyers always to the right


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