30 BR question

[fm1947]

I am haveing a 30 BR built it will be done early july it is a Savage Target action and Krieger barrel having action blue printed also, I would like to get ahead and maybe start on brass I thought I read in here that I could take my cases and FF in my 6mm br then expand my necks, I just got my redding exspander yesterday, I can then turn necks since I know the throat will be .330, or should I wait and FF in new chamber

 

[82boy]

A 30BR is a bit on the labor intensive side.
I would not fireform your brass in a 6mmBR chamber, more than likely the chamber specs will be diferent between the two. There are several ways to prep brass, and you can do them before the barrel arives. If you go to the home page and look under 30BR it will show you the ways of doing this. The throat will not be .330 but the chamber neck diameter will be. Yes you can cut your neck thickness down. General rule of thumb is you want your loaded cartridge to be .002 smaller in diameter than your chamber speck. (Loaded ammo should measure at .328) You will also need to know the neck length of your chamber, Most Robbinette reamers are a 1.510 length, and you want to cut the brass back to 1.500.

 

[fm1947]

I meant neck dia. .330 , thanks I will read again , I have read it several times, I thought that is where I got that idea. Thanks

 

[rayjay]

The only reason you would fireform before neck turning is if you had a 30BR bbl stub or shot out bbl that you would be using to blowout your cases .

For a newbie you should just expand the necks and then turn them. Then fireform. I use 4 progressively larger mandrels when doing my neck expanding. Also use good lube like die wax.

 

[fm1947]

Just figured there wouldnt be much difference if I just took some of my fire formed 6m br brass I have and just go from there since headspace should be no difference example I have two different barrels one savage and the other shilen both headspace identical, just thought only difference going to a 30 would be neck and any additional forming would take place on my first fireing. Guess I can wait.

 

[superlight93]

only use virgin brass for your new barrel

 

[fm1947]

Yes new brass, I thought of useing just a few used for testing, I guess I will get the expander die by Sinclair and do as rayjay talked about 4 or 5 steps up to the 30. thanks guys

 

[fm1947]

okay now, who's neck turner is the best for the buck?

 

[GSPV]

I like my Pumpkin the best. It's certainly not the cheapest, however. I also liked the looks of the new one that was featured on the home page recently, but I have no experience with it.

 

[AlNyhus]

fm1947: The Redding tapered expander (#16307) is a 'one pass' method to neck up the cases. -Al

 

[JohnnyJohnson]

Al is right. The one thing that seemed to really help was to highly polish the expander and to completely lube the insides of the necks well. A Q-tip seems to work well for that.

 

[Eddie Harren]

I use a Sinclair stepped expander mandrel followed by a Sinclair with a mandrel ground to match my Hart neck turner. I don't get the "4 or 5 steps".

 

[fm1947]

I have the redding goes from 243 to 30 waiting on a larger rod from redding and i need to get that imperial wax, will have to see how this works , 4 or 5 steps going from 243 up with increments in caliber , thought that could be easier , will see how i like this redding

 

[GSPV]

I'm expanding 6.5 Grendel cases to 30. I was originally doing it in two steps. Al put me onto the single pass mandrel. I have one that fits my Pumpkin mandrel. I've never looked back.

I've tried all kinds of lube. I like Imperial the best overall.

 

[fm1947]

what a pumkin that the brand name or a nic name or what

 

[GSPV]

It is a nickname, I guess for the Don Nielson turner. You can buy them through Kelblys.

The other turner that I couldn't remember the name of is from PMA Tool.

 

[fm1947]

ok thanks