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HELP!!! FL resized brass question

 
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  #1  
Old 06-30-2014, 09:41 PM
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Join Date: Jan 2011
Location: wyoming
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HELP!!! FL resized brass question

Ok,
I'm new to reloading and need some input. I have a factory remington 700 KS chambered in 7mm STW. I have factory double tap and HSM ammo on hand. Last week I received my new dream 7mm STW build (benchmark barrel, 700 action, wyatt box for 4" COAL, gamescout, ect ). In my NEW stw I can chamber factory rounds with zero problem. I purchased a redding T7 press, redding FL sizing dies and redding shell plates. When I attempt to chamber my once fired brass that has been ran through the FL die in my NEW stw its so tight that it takes all I have to close the bolt. When I take that same piece of brass and chamber it in my factory stw it closes with zero problems.

First I thought my brass needed trimming so I trimmed it down A LOT and still it won't fit. I checked my press and I set the die so low that it was pushing against the shell holder and tried it the other way and still nothing. So i got the calipers out and started doing measurements on the brass. All of the factory brass is within .001 of each other. All the different brands come out of the die about .005 wider than before it was fired. When I say wider I'm talking about above the belt ( 1/2 inch up from the belt is where I took my measurements). Factory brass is coming in at .5055 +/-and after they have been fired and ran through the redding FL die they are coming in at .5122 +/-. All of the brass is once fired out of my factory remington or factory weatherby (sold it) stw.

If I set the caliber loose and run it up the brass from neck to belt the widest point on the factory ammo comes in at .5061 +/-, on the once fired ran through the FL redding die its .5128 +/-.

To add to the confusion, my hunting partner had the same smith build him a STW two years ago and he reloads using RCBS dies and has never had a problem with chambering anything. So my question is, where do I go from here. Tomorrow I'm going to contact my smith and redding and see what they say. any input would be great.



Thank you
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  #2  
Old 06-30-2014, 10:12 PM
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Join Date: Jan 2011
Location: wyoming
Posts: 19
Re: HELP!!! FL resized brass question

At the advise of a member, I colored one of the once fired FL sized cases with a sharpie and ran it through the chamber a few times and the only dragging marks I'm seeing are on the shoulder. still confused
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  #3  
Old 06-30-2014, 10:46 PM
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Re: HELP!!! FL resized brass question

problem solved. shimmed under the brass while in the shell holder and extended the die till it was smashed into the shell holder and everything works perfect.
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  #4  
Old 06-30-2014, 11:46 PM
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Join Date: Jul 2012
Location: North Central Valley California
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Re: HELP!!! FL resized brass question

Quote:
Originally Posted by mk443 View Post
problem solved. shimmed under the brass while in the shell holder and extended the die till it was smashed into the shell holder and everything works perfect.
Glad you got it worked out. Sounds to me like the folks you had custom chamber that barrel had a tight chamber reamer. Factory reamers typically run sloppy to accommodate a wider range of ammo. and it isn't uncommon to have custom dies made for tight chambers.
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  #5  
Old 07-08-2014, 11:57 AM
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Re: HELP!!! FL resized brass question

From our experience using once fired brass from another weapon will just cause problems in custom rifles. This is a common problem when a guy goes from SAAMI to custom. The best/most reliable fix is to start with new brass, if you can find it.
Chris
Benchmark Barrels
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  #6  
Old 07-08-2014, 11:06 PM
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Location: wyoming
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Re: HELP!!! FL resized brass question

Thanks Chris, Yeah I knew going into this with once fired would cause more work but I have 300+ once fired STW brass which is pretty tough to come by right now. The new build is actually sporting the barrel I picked up from you on the group buy!. I have about 100 factory loaded double tap rounds I was going to use in this rifle and use for barrel break in but I didn't want all this brass to go to waste. I just have to allow the die to make strong contact with the shell holder and I have zero issues at all.
Hoping the barrel shoots as good as it looks!

thanks

Mitch
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  #7  
Old 07-09-2014, 01:31 PM
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Re: HELP!!! FL resized brass question

The other thing you could do is send 3 fired pieces to CH4D and they will make you a custom tight resizing die. Have fun with you rifle!!
Chris
Benchmark
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