Thread: Neck turning

No @BRADS, my mrs isn't walking past your tractor.

What is a good set up to get? Brand, good price etc? I don't even know what bits I need. 7RM and 308

Sinclair int gear is perfect

They have a stunningly good website

You must be so bored to consider Neck Turning mate.


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K&M - they have an option for carbide cutter on the mandrel, so you get rid of neck doughnuts easily.

Whatever you get, get an adapter for power drill. Doing this by hand sucks !

K&M +1

youll need expander mandrels for each calibre, plus the actual tool, and mandrels for the calibre to fit into the tool, and as ebf says the power drill adapter

Originally Posted by scoped

K&M +1

youll need expander mandrels for each calibre, plus the actual tool, and mandrels for the calibre to fit into the tool, and as ebf says the power drill adapter

OK, does anyone stock it in NZ?

Just buy direct from K&M, alternatively Julian @ Workshop Innovation.

Good overview of the process here, I just use some light machine oil with an earbud to lube before cutting.

https://m.youtube.com/watch?v=EyJ9KkE2pVc

k&m recommend the imperial sizing wax, Julian probably is only a like, 10% more expensive

Originally Posted by scoped

k&m recommend the imperial sizing wax, Julian probably is only a like, 10% more expensive

I have the wax

Originally Posted by ebf

Just buy direct from K&M, alternatively Julian @ Workshop Innovation.

Good overview of the process here, I just use some light machine oil with an earbud to lube before cutting.

https://m.youtube.com/watch?v=EyJ9KkE2pVc

Meh, all sounds a bit like more work to me

Ah Ha!! Mate has one, just need mandrel and expander in 7mm.

Originally Posted by Gibo

Ah Ha!! Mate has one, just need mandrel and expander in 7mm.

And an actual reason to do it, whats your neck clearance in the chamber now ?

To find out Add 1.3 thou to the OD of a fired neck due to spring back of the brass, 1 thou if its annealed, subtract that from the OD of a loaded neck to get your neck clearance in the chamber.

Hunting rifle brass can have 2 to 10 thou clearance without too much bother, target brass can go tighter at 1.5 to 2 thou clearance.

Remember at 2 thou clearance thats only one thou all the way around.

Be very careful neck turning/removing material from the OD of brass as the amount you remove will reduce neck tension by the same amount with standard dies that often only have 4 thou neck tension to begin with.
bushing dies can overcome the effect by going to smaller bushings.

You can create a big inaccurate mess if not fully understood first or necessary

Originally Posted by 7mmsaum

And an actual reason to do it, whats your neck clearance in the chamber now ?

Add 1.3 thou to the OD of a fired neck due to spring back of the brass, 1 thou if its annealed, subtract that from the OD of a loaded neck

Be very careful neck turning/removing material from the OD of brass as the amount you remove will reduce neck tension by the same amount -with standard dies, bushing dies can overcome the effect by going to smaller bushings.

You can create a big inaccurate mess if not fully understood first or necessary

I am the master of messes!! Mate knows what its all about so i'll take some brass and see if I need to. Boredom getting the better of me again Better off to just go and shoot stuff!

You are always better off to just go shoot stuff

Originally Posted by 7mmsaum

You are always better off to just go shoot stuff

He has peeled bananas poking out his noggin