After Annealing Neck Needs Turning

[Nick Caprinolo]

You can hold .0001 with the tool but couldnt come close to that on a lathe.
And its not that fl sizing will help your groups but it will let your rifle operate and be alot smoother and faster which does improve groups

I am not talking about a big lathe. I mean the small neck turning lathes that can either be turned with a hand crank or a small drill. What do you use?

 

[Ccrider]

Recently, for the first time, I annealed some 6PPC brass. After resizing and reloading, about 15 out of 100 rounds it would not chamber. I checked the dimensions of the brass and found that the wall thickness had increased by .002. Brass measured .258 before seating a bullet and .262 with bullet seated. Brass had previously been fired 10 to fifteen times with no problem.

I googled results of heating brass but could find no definitive answer. Brass was not overdone.

Did you actually measure the brass before annealing? Maybe it was not trimmed as much as the other brass.

Also, why 260 instead of 258 or 259 for your finished load.

I think it was Jack Neary in his video that said cut them thin to win. There is a debate about what he meant, but I have not found where anyone is recommending.260 as a being advantageous. Someone else wrote something like the case should fit like a rat turd in a violin case.
I know that not enough clearance can lead to problems.

 

[Dusty Stevens]

I am not talking about a big lathe. I mean the small neck turning lathes that can either be turned with a hand crank or a small drill. What do you use?

I use a purpose built motor and gearbox that turns the case and cut the necks with a neck turning tool

 

[muleystalker]

I use the 21st Century power lathe and it works great. They make a case trimmer that goes on it too that trims to length, and chaffers inside and outside all at once.

 

[misser]

I use the 21st Century power lathe and it works great. They make a case trimmer that goes on it too that trims to length, and chaffers inside and outside all at once.

yeah but the price ….I could buy a new gun for that much $$$

 

[muleystalker]

yeah but the price ….I could buy a new gun for that much $$$

I was lucky enough to catch a great sale they ran, the only one I have ever seen them run. But I must say their customer service is second to none. In my haste to place the online order before it ended I did not realize I was getting duplicate items with some other different parts combos I ordered. The next day I received a phone call from them informing me they received my order and upon going over it they caught the fact I was going to have duplicate parts and wanted to informed me to see if it was intentional. They had also worked up a new order to save me money so I wasn't paying for duplicate parts. I ordered several cutter heads for different degree cutters so I wouldn't have to change out cutters in the holder every time. The owner seen what I was doing and understood why and said he had the person writing up the new order add three extra parts for the different case head sizes I was going to turn so I wouldn't have to change parts on the case holder every time I wanted to change case head size and I would have a complete case holder for each size, free of charge. Yes I spent a chunk of change with them but he didn't have to give me in the extra parts and could have very easily just ran the order through without calling me. Total between the parts he didn't charge me for and the duplicate parts he caught in my order added up to about $180.00-$200.00 he saved me.
All I have to say this type of service is becoming rare in this day and age and they sell a quality product that takes a task that most hate doing and almost makes it enjoyable.

 

[Nick Caprinolo]

Did you actually measure the brass before annealing? Maybe it was not trimmed as much as the other brass.

Also, why 260 instead of 258 or 259 for your finished load.

I think it was Jack Neary in his video that said cut them thin to win. There is a debate about what he meant, but I have not found where anyone is recommending.260 as a being advantageous. Someone else wrote something like the case should fit like a rat turd in a violin case.
I know that not enough clearance can lead to problems.

My neck is cut for a .262 neck. Formed brass is .258 and with bullet inserted should be .260. The neck wall thickness is .0085. These are the numbers of the brass when I got the rifle and have stayed that way until annealing. Most of them remained that way but about ten increased to a wall thickness of 009.5 or more. They would not chamber as when bullet is inserted they increased to .260 or more.

 

[liseo]

My neck is cut for a .262 neck. Formed brass is .258 and with bullet inserted should be .260. The neck wall thickness is .0085. These are the numbers of the brass when I got the rifle and have stayed that way until annealing. Most of them remained that way but about ten increased to a wall thickness of 009.5 or more. They would not chamber as when bullet is inserted they increased to .260 or more.

Nick
This happened to me too, with my "fitted "308 cases. After annealing, they don´t chambered anymore.

Neck tickness increased a bit

 

[Straightshooter1]

Hmmm??? Interesting.

That issue must have something to do with the way the chamber is cut . . . and/or with the use of heavy loads???

I haven't had that issue with my cases and I anneal and trim to length after every use (using Federal brass for my .308) and now with 10 firings of mostly mild loads.

 

[liseo]

I'm not a metallurgist, so I can not explain.
Perhaps in cases where annealing is more frequent, this phenomenon is not as pronounced.
In my case, the cases already had several reloads before annealing.
I imagine that to make the brass softer, a rearrangement of the molecules must take place and with this the expansion occurs.
Just a guess...