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Micky Duck
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small base dies
Dec 1st, 2017 at 11:25am
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ok so we have an older BLR .308 and have been having issues with reloads......plurry tight to chamber even an empty FLR case using hornady new dimension std dies.
after much research people telling me we should be using small base dies that will make case tas narrower at web area and issue should go away.......
tried a FLR case in older set of .30/06 dies and buggamesideways it wouldnt slide in so gave it a wee lube,took out neck sizing button and worked it through press....it appears to have brought case down to closer to factory size...... can anyone with small base dies in.308 do a measure (my calipers dont measure fine enough) and see if they take it down to same specs as .30/06
looking up specs it APPEARS the 06 case is slightly smaller at web area (maybe they made 08 case fatter to prevent chambering???) have I stumbled over a poor mans small base die????
  
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Flintlock
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Re: small base dies
Reply #1 - Dec 2nd, 2017 at 8:22am
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Have a look at the dimensions
3006 https://en.wikipedia.org/wiki/.30-06_Springfield

308 https://en.wikipedia.org/wiki/.308_Winchester

any way it is the fired dimensions you need to worry about not the factory new dimensions .

  

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sako
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Re: small base dies
Reply #2 - Dec 2nd, 2017 at 9:30am
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This issue arises in mil brass used in std gun. Overcome by annealing and sbd. Only have experience in 223.
  
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Re: small base dies
Reply #3 - Dec 2nd, 2017 at 10:12am
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Don't be tight buy a Redding Small base body die I have them in 6mmBR and .223 and a small base bushing die in .308 which with
a bushing change works as a 7mm08,
The 30/06 case has more taper than the .308 so would over work the brass and with no shoulder in the die you could have headspace
problems down the track
  
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Re: small base dies
Reply #4 - Dec 3rd, 2017 at 6:43am
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sako wrote on Dec 2nd, 2017 at 9:30am:
This issue arises in mil brass used in std gun. Overcome by annealing ..


Annealing is NOT the way to deal with brass that's tight in a chamber near the base. No significant heat should ever be applied to the bottom two-thirds of a case.
  
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Micky Duck
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Re: small base dies
Reply #5 - Dec 3rd, 2017 at 12:43pm
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Rob,I was intending to put through the .308 die after making body smaller in .30/06 or vice versa,just wondered if the diamentions of .30/06 as similar to what you get from small base. its the bottom 1/2-1/4 of case that got reworked by 06 die....
  
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shooternz
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Re: small base dies
Reply #6 - Dec 3rd, 2017 at 1:11pm
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Micky Duck wrote on Dec 3rd, 2017 at 12:43pm:
Rob,I was intending to put through the .308 die after making body smaller in .30/06 or vice versa,just wondered if the diamentions of .30/06 as similar to what you get from small base. its the bottom 1/2-1/4 of case that got reworked by 06 die....


I think that depends on the make of die not all are the same you would need to try a few to find the one that sizes to the diameter you want, all the 30/06 and .308 case based cartridge bases are .470"  so unless you find a die tighter than standard they should all size them the same diameter finding an out of spec size die would be like winning LOTTO
  
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Micky Duck
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Re: small base dies
Reply #7 - Dec 3rd, 2017 at 3:57pm
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thats what I thought but then the .30/06 die "shouldnt" work a case that has been through a .308 full length cycle.....I tried it on a flr case, just to see and was surprised how much "work" it did do.
  
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noelfj
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Re: small base dies
Reply #8 - Dec 5th, 2017 at 6:37am
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Buy another full length resizing die and cut the neck off, this will allow you to set the case in deeper without changing the headspacing, then resize with the ordinary die to get a good fit. It may be that you will need to have two dies set up at the same time. (OK for me as I have a 6 station press)
  
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Micky Duck
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Re: small base dies
Reply #9 - Dec 5th, 2017 at 8:19pm
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hmmmmm food for thought..... thanks for taking the time to ponder this and get back to me with thoughts....
  
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Re: small base dies
Reply #10 - yesterday at 2:13am
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Have you tried turning the die down another 1/8 -1/4 of a turn? Had a similar issue with a lever action some years back and this fixed it, thought I might have been over doing the resize but never had an issue.
Was the same Hornady dies also.

Also had a problem once where I hadn't used enough lube on the inside of the necks and was slightly stretching the shoulder with the collet just enough to make them tight, took me a while to track down.....
  
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Re: small base dies
Reply #11 - yesterday at 7:31pm
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I had the same sort of problem when setting up a Remington 742 semi as a pump action in 30-06, my supply of odd brass, 25-06, 270, and 30-06 was very varied and about 30 cases just would not size down with my standard dies.
I set up a case holder, one of my specials as a push only and used a punch through the center of the die to remove the case. This reduced the body diameter to fit the rifle but stuffed up the head space as the case was some 1/16" too short to the head spacing shoulder.
This was fixed by making a little tool to form 3 out standing bumps on the case shoulder and then sizing each case to headspace correctly for my rifle.
The cases head spaced on the sized bumps
On firing the case fire formed to the exact chamber size.
All the cases involved were annealed twice during the process.
  
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