Neck turning

Noel

Noel

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Can someone offer their experience with turning necks.
I have been reforming some 06 brass into 9.3x57, went to the range and they wouldn't chamber because the necks are too thick( .002" per side compared to the Metalverkin(sp) brass I bought).

I was looking through the wholesale sports catalog, there are a couple types.:confused:
I have never watched anyone do this kind of process. I don't imagine it is that hard.

What do you use, would you buy it again and is it worth the trouble?
The correct brass is a buck a piece. Thought I'd be smart and only get twenty but when the range is a half hour away, load testing can take several trips.:(

Thanks for your help!
Noel
 
It is certainly worth the trouble if there is a safety concern, as there is with your loads. (be glad that the cases didn't chamber)
It can also be worth it for squeezing the last little bit of accuracy out of your already accurate rifle/load combo.

I use the neck turning attachment for the Forster case trimmer, if I were buying one again, I'd buy the Sinclair kit; but either way you'd need someone to custom make you a set of pilots, 'cause 9.3 is a bit odd-ball.

Something you might consider would be taking 8x57 brass and using a charge of fast pistol powder and cream-of-wheat (COW) to make your cases. I'll bet that makes better cases, because you won't be getting into the shoulder of the '06 case to make your neck.
 
I think you need to consider two different operations here. Neck reaming - which is the removal of material from the inside of the neck - is a way to quickly make the case neck thinner and can be used in conjunction with neck turning. Neck turning is more often used to ensure the case neck is concentric - in other words equal thickness all around. Neck reaming does not correct this condition - if you ream an nonconcentric neck the cutter will simply follow the hole which already exists, and concentricity of the neck is not improved. When neck turning you will notice that the cutter cuts then skips a piece then cuts again - this is because the cutter is just cutting off the "high" parts. So ream the necks which are too thick - particularly when, as in your case, you form a new cartridge from a parent cartridge, and turn the neck to make it concentric.

Order a Sinclair International catalog - they offer good information on the subject, and also sell the tools you'll need to do the job properly. Consider getting a neck reamer which is put in place of the pilot on a normal lath type case trimmer, a neck turning tool and pilot, a neck expander mandrel and die, and some dry lube (powdered graphite).
 
I turn the necks on several of my wildcats.
A Forster unit woorks very well, and can be used for trimming as well.
I don't use mine for trimming too much, as once it was set up for turning , it was prety well permanent and I use a different trimmer for that operation.
Turning cases is not a big deal, just make sure that you don't try to take too big a cut at once..
I ball mike or similar is important tto check the proper neck thickness also.
If you take 8X57 and neck it up, you may not have to turn, also.
When Old Badger first got his 9.3X57 he was swedging down 35 caliber Game Kings for bullets, they work very well.
Cat
 
Necking up 8x57 brass should avoid the need to turn necks. The necks should be slightly thinner, if anything.
If necks are reamed in a RCBS reaming die, the neck should be concentric. Reamed in a trimming lathe, they may well not be.
 
I don't have a whole lot of room for another apparatus to get mounted on the bench so perhaps it is wiser to try blowing out 8x57 cases. I will be selling my 06 shortly and was hoping to use that pile of brass somewhere else.
I will see if I can find some 8 mauser.

Thanks guys!
Noel
 
HI Dan,
I am not sure of the chamber dim. but I can see where it leaves a bright polished ring around the neck of the case, which led me to pull the bullet and measure the neck. I guess it is the taper of the 06 case getting shortened that much that doesn't help, or maybe the fact that I was using crap FC brass. Perhaps I should try another brand, hmmmmm...
The rifle seems to be very close to new condition metal wise even though it is about 70 years old, so I would imagine it is my bad that the case does not fit. Will try some other brass tonight.

Thanks,
Noel
 
Tried to neck down a WW and an RP case last night. W-W ends up the same thickness as the FC one that did not fit. The RP case comes up to the same dim. as the Metalverkin case but still offers the slightest chambering resisitance when slding it in the pipe.
I will try to snag some 8 Mauser and neck up next.
Thanks for the help guys!

Noel
 
Hi Guy's, just an update for others checking this thread, I ended up snagging a bag of 8mm Mauser brass and necked them up with my 338-06, then to 375 and then ran it full length in the 9.3x57 dies.
They measure up just the same as the factory Metallverken brass and the loaded rounds chamber with ease.

Thanks for the help guys, all that's left is to take her out and fill some tags!

Noel
 
For the most part I agree with you Splatter, except for the fact I leave Wednesday for the hunting trip and the local public gun range tends to be very chaotic this time of year, not to mention it is over a half hour drive each way. This seemed to be the best resolve I could come up with.
Now had I still be living at home on the farm like a smart kid would have, Mom's Cream of wheat supply would be somewhat smaller today.:)

Noel
 
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