April 10, 2010, 12:27 AM | #1 |
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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 |
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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.
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April 11, 2010, 08:35 PM | #3 |
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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.
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April 11, 2010, 09:20 PM | #4 |
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April 11, 2010, 10:47 PM | #5 |
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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.
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April 12, 2010, 09:55 PM | #6 |
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Thanks for the information , I am trying the 7MM TCU this weekend
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