Machining Button-Rifled Barrels

[58weasel]

With a button-rifled barrel that is stress-relieved after rifling, will machining in the contouring and threading (and even chambering?) of the barrel adversely effect accuracy?
Or is this related to how close the machining comes to the lands/grooves of the barrel?
Or does "machining from within", such as chambering, not present such problems?

Noted on a Utube video of John Krieger, he happened to mention in passing that Savage does not stress relieve after button-rifling, and yet the Savages are noted for their "out of box" accuracy. What gives? John seemed to think that perhaps if the lands were un-effected by the lack of stress relief, the groves going "wobbly" might not be such a big concern.

Enlighten me, if possible. Always problematical at best!

 

[okslammer]

Agreed , just it depends on what degree of accuracy your looking for

 

[Rustystud]

There are big differences between OEM barrels ($89.00) and high end custom barrels ($315.00) .
The below listed process may vary between manufactures. Non premium and OEM barrels may not have all these process.
1. Better quality steel
2. Pre stress relieved
3. Drilled with more precision
4. Reamed correctly, no whip lash
5. Stress relieved a second time.
6. Pre lapped to specified pre button diameter.
7. Buttoned
8 stress relieved third time
9. final lap relieving tight an loose spots and adding choke to barrel.

The cut rifle process is a little different and varies with different manufactures. Just as with button barrels lessor quality cut rifle barrel may skip or delete processes in the manufacture.

There is more machine time in cut rifled barrels. It takes several hundred passes with a cutter head in cut rifle barrels. Button barrels are often only buttoned once and it takes 20-45 seconds. Some button barrels are double buttoned. There is more stress relieving and lapping in the button process.

In either process the proper diameters land groove ratios and barrel interior finishes and stress removal are what make a barrels shoot well.
Properly done either process can produce great shooting barrels.
Nat Lambeth

 

[Dos XX]

So would turning down a barrel to a smaller profile, button or cut, affect it's accuracy?

 

[gunsandgunsmithing]

So would turning down a barrel to a smaller profile, button or cut, affect it's accuracy?

IME, no.

 

[Larryh128]

+1. I have turned down quite a few heavy barrels to sporter contours. They all shoot.

 

[58weasel]

Thanks, fellas. It all has been helpful. Particularly kudos to Nat for the great listing. All in the details, as usual. It gives me a good feel for what to look far when I speak to a riflesmith after I get my barrel blank. Really have a greater appreciation for the button-rifled barrel now.
I'm learning alot, and I really appreciate you all taking your valuable time to help me out.

 

[p-man]

Very well explained, Nat . . if only they listen - with factory barrels, you may find 5 in 100 that shoots extremely well . . . with top-end custom barrels you may find 5 in a hundred that don't