7-30 Waters and 7MM-TCU

Winterhawk56 · April 10, 2010, 12:27 AM

I picked up a new TC 7-30 waters barrel and used 7MM TCU now the questions.

I have tons of .223 and 30-30 brass so buying new brass at $30 to $65 dollars for 20 is out of the question!!

The die sets were easy to get for both calibers and I have been reloading since 1979 so am somewhat familiar with reloading

.

Has anyone resized/fire formed these rounds before and provide some pointers or put me in the right directions to better make my rounds?

The 7-30 is fairly easy with the sizer die and fire form but the .223 to 7MM-TCU is giving me trouble!

Either way any help with each caliber would be appreciated.

Scorch · April 10, 2010, 12:23 PM

With the TC Contender, you want to size the brass so the action just barely closes. Fireform with mild loads (I used lead bullets when I was fireforming), then reload as normal.

Loader9 · April 11, 2010, 08:35 PM

Once you get the 7 TCU brass formed with the dies, you'll want to seat the bullet where it is FIRMLY against the lands and grooves and requires the closing of the action to finish the seating process. You're doing this to make sure the head of the case is pushed back against the action. Fireform it using a lead bullet if you have any, and a quick burning powder like Blue Dot, SR4759, etc. You're just trying to get past 40,000 lbs of pressure which is what is required to firefom the case correctly. Once fireformed, you'll want to set your FL die that the action closes tight like Scorch said.

Brian Pfleuger · April 11, 2010, 09:20 PM

Withdrawn

SVO · April 11, 2010, 10:47 PM

If the brass you using is once fired and not new, I'd suggest annealing the case necks before reforming to your desired new caliber. Used brass will be work harden from being fired and annealing will stress relieve the neck, making them less brittle and easier to reform.

Winterhawk56 · April 12, 2010, 09:55 PM

Thanks for the information , I am trying the 7MM TCU this weekend

April 10, 2010, 12:27 AM	#1
Winterhawk56 Senior Member Join Date: March 9, 2008 Location: Southern California Posts: 228	7-30 Waters and 7MM-TCU I picked up a new TC 7-30 waters barrel and used 7MM TCU now the questions. I have tons of .223 and 30-30 brass so buying new brass at $30 to $65 dollars for 20 is out of the question!! The die sets were easy to get for both calibers and I have been reloading since 1979 so am somewhat familiar with reloading . Has anyone resized/fire formed these rounds before and provide some pointers or put me in the right directions to better make my rounds? The 7-30 is fairly easy with the sizer die and fire form but the .223 to 7MM-TCU is giving me trouble! Either way any help with each caliber would be appreciated.

April 10, 2010, 12:23 PM	#2
Scorch Senior Member Join Date: February 13, 2006 Location: Washington state Posts: 15,248	With the TC Contender, you want to size the brass so the action just barely closes. Fireform with mild loads (I used lead bullets when I was fireforming), then reload as normal. __________________ Never try to educate someone who resists knowledge at all costs. But what do I know? Summit Arms Services

April 11, 2010, 09:20 PM	#4
Brian Pfleuger Moderator Emeritus Join Date: June 25, 2008 Location: Austin, CO Posts: 19,578	Withdrawn __________________ Nobody plans to screw up their lives... ...they just don't plan not to. -Andy Stanley

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April 11, 2010, 08:35 PM	#3
Loader9 Senior Member Join Date: July 29, 2008 Posts: 949	Once you get the 7 TCU brass formed with the dies, you'll want to seat the bullet where it is FIRMLY against the lands and grooves and requires the closing of the action to finish the seating process. You're doing this to make sure the head of the case is pushed back against the action. Fireform it using a lead bullet if you have any, and a quick burning powder like Blue Dot, SR4759, etc. You're just trying to get past 40,000 lbs of pressure which is what is required to firefom the case correctly. Once fireformed, you'll want to set your FL die that the action closes tight like Scorch said.

April 11, 2010, 10:47 PM	#5
SVO Senior Member Join Date: December 20, 2009 Location: Texas Gulf Coast Posts: 728	If the brass you using is once fired and not new, I'd suggest annealing the case necks before reforming to your desired new caliber. Used brass will be work harden from being fired and annealing will stress relieve the neck, making them less brittle and easier to reform.

April 12, 2010, 09:55 PM	#6
Winterhawk56 Senior Member Join Date: March 9, 2008 Location: Southern California Posts: 228	Thanks for the information , I am trying the 7MM TCU this weekend