Recontouring a barrel and its effects on accuracy.

[savagedasher]

What is the sunnen process of rifling.
Stan

I would talk to Sunnen. Or the barrel maker who is using the process.
They had a article on here. Also they have advisement on this site. Larry

 

[stansrifles]

Thanks for the reply but I found a article on it interesting.
Stan

 

[Tim s]

If this is a SS buttoned barrel it will likely be ruined if you go more than a few thou on the profile. The bore will, indeed get bigger, but the interior dimension will allso go all over the place from one end to the other because of all the stresses you will release.

Wrong if a button barrel is properly stress relieved if you turn it down to a smaller contour providing it is a slow process or if it is flooded with coolant it will not open up.
Stan

There's a reason they're stress relieved after they arecontoured there Stan, and I might add, this is very well documented.

 

[stansrifles]

WE stress relieve after we rifle the barrel you make a trip sometime to were I work I will prove to you that the barrel size inside does not change after we turn it down to lets say a Remington sporter which is of medium weight.
Stan