Neck tension on 6br

[Joeski]

I have some brass that will not hold the bullet after neck sizing only. Is this common and will annealing solve the problem? I should add that I have sized about 200 other pieces of this brass and they are holding the bullet with the right neck tension. I bought the Lapua brass used. They were separated in lots of 50 and this lot of 50 has loose neck tension and will not hold the bullet after neck sizing.

 

[savagedasher]

Check the thickness of the brass .
Larry

 

[Joeski]

Check the thickness of the brass .
Larry

Copy yeah I suppose he could have uniformed the necks on that lot of 50 thereby reducing the neck tension. I might have to get a different bushing for that 50. Dang...

 

[RonAKA]

I have some brass that will not hold the bullet after neck sizing only. Is this common and will annealing solve the problem? I should add that I have sized about 200 other pieces of this brass and they are holding the bullet with the right neck tension. I bought the Lapua brass used. They were separated in lots of 50 and this lot of 50 has loose neck tension and will not hold the bullet after neck sizing.

There are two basic types of 6BR Lapua brass out there. They are commonly referred to as gold box, and blue box, based on the box they were originally delivered in. My 6BR brass is gold box, not turned, and I use a 0.267 bushing to size them. I believe the blue box stuff has brass that is a little thinner in the neck thickness. You may have a mix of blue and gold box brass. Or someone has turned some of it down. In any case the solution is simple if you have a bushing die -- got to go smaller!

 

[Texas10]

Another possibility is they were annealed to a dead soft state.

 

[Jet]

Joeski

Just use a smaller diameter neck bushing.

Rich

 

[ASbobcat]

I have some brass that will not hold the bullet after neck sizing only. Is this common and will annealing solve the problem? I should add that I have sized about 200 other pieces of this brass and they are holding the bullet with the right neck tension. I bought the Lapua brass used. They were separated in lots of 50 and this lot of 50 has loose neck tension and will not hold the bullet after neck sizing.

Since the brass is used, you have no idea how many cycles it's been through. I would try annealing first before buying a new bushing.

 

[Joeski]

I was hopeful annealing would help but no such luck. New bushing is on the way.

 

[Jet]

I was hopeful annealing would help but no such luck. New bushing is on the way.

Having bushings in multiple sizes is key to being able to find proper tune.

Good Shooting

Rich