collapse

Advertisement


Author Topic: Resizing brass 30-06 to 25-06 questions  (Read 1901 times)

Offline broadhead

  • Trade Count: (+1)
  • Hunter
  • ***
  • Join Date: Feb 2013
  • Posts: 138
Resizing brass 30-06 to 25-06 questions
« on: September 02, 2022, 05:40:47 PM »
Hi guys,

I've tried resizing the 30-06 to 25-06 on a few cases.

After the resize I trimmed and examined the results.

What I've found is it fits in the chamber of the rifle.

What I've noticed is a slight bulge in the brass just below the neck.

How are you guys doing similar conversions? And I'm concerned about the bulge. I neck sized it with Lee neck sizer afterwards and it fits like I said but want to reach out to others with more experience and welcome comments.

Should I anneal before this process to eliminate the problem?

Thanks
Die fish!

Offline Stein

  • Non-Hunting Topics
  • Trade Count: (+11)
  • Explorer
  • ******
  • Join Date: Sep 2013
  • Posts: 12917
  • Location: Arlington
Re: Resizing brass 30-06 to 25-06 questions
« Reply #1 on: September 02, 2022, 06:21:00 PM »
A bulge or dimple?  I'm not sure how you can have a bulge as the die would prevent that?

If it's a dimple, check your die.  If there is junk or extra lube in there I get the same thing and it resolves itself after a good cleaning.

Offline broadhead

  • Trade Count: (+1)
  • Hunter
  • ***
  • Join Date: Feb 2013
  • Posts: 138
Re: Resizing brass 30-06 to 25-06 questions
« Reply #2 on: September 02, 2022, 06:22:26 PM »
It's definitely not a dimple. I've see that when using too much case lube. I'll take photos if necessary. However it's very slight and may not show up in photos so well. Bulge is small just below neck and above shoulder. So slight.

Thanks for the response.

I'm wondering if I can just shoot it out and it will form. But checking in with people because I'm careful
« Last Edit: September 02, 2022, 06:30:08 PM by broadhead »
Die fish!

Offline broadhead

  • Trade Count: (+1)
  • Hunter
  • ***
  • Join Date: Feb 2013
  • Posts: 138
Re: Resizing brass 30-06 to 25-06 questions
« Reply #3 on: September 02, 2022, 06:38:37 PM »
Attaching image to see if it helps.

Left is factory 25 right is conversion with light red highlighted pointed to area of concern
Die fish!

Online mountainman

  • Political & Covid-19 Topics
  • Trade Count: (0)
  • Old Salt
  • ******
  • Join Date: Mar 2007
  • Posts: 5955
  • Location: Wenatchee, Wa
Re: Resizing brass 30-06 to 25-06 questions
« Reply #4 on: September 02, 2022, 07:19:52 PM »
Load, shoot, good to go👍
Will come out looking perfect
That Sword is more important than the Shield!

Offline Magnum_Willys

  • Political & Covid-19 Topics
  • Trade Count: (+1)
  • Old Salt
  • ******
  • Join Date: Nov 2009
  • Posts: 5602
Re: Resizing brass 30-06 to 25-06 questions
« Reply #5 on: September 02, 2022, 09:40:52 PM »
Have you played with the sizing length - looks like maybe you could back die of a bit or will it not chamber?

Offline broadhead

  • Trade Count: (+1)
  • Hunter
  • ***
  • Join Date: Feb 2013
  • Posts: 138
Re: Resizing brass 30-06 to 25-06 questions
« Reply #6 on: September 03, 2022, 04:16:21 AM »
It fits in the chamber and is technically Saami spec on shoulder and oal.
I use an Rcbs precision mic to verify shoulder. It's not a size issue other than minor deformity.

I think I'll shoot a few today
Die fish!

Offline Smokeploe

  • Political & Covid-19 Topics
  • Trade Count: (0)
  • Scout
  • ****
  • Join Date: Feb 2013
  • Posts: 255
  • Location: Ethel
  • Groups: FTE, shooterforum
Re: Resizing brass 30-06 to 25-06 questions
« Reply #7 on: September 03, 2022, 06:47:30 AM »
I resize a few different cases off the 30-06 both up and down, since 1964.  If it fits and the bolt closes on an empty shell then I load with which ever powder I got the most with for that caliber and shoot them.  Accuracy will be the pits, but the shell will confirm to the chamber and you are ready to load for accuracy now.
The only time I will discard a case if I get a crimp, that will not come out, it is from too much case lube.  Just remember when sizing down a slow and steady push and pull on the ram arm will result in good cases.

Good luck
Smokeploe
Smokeploe

When guns are outlawed then only outlaws will have guns!
The same with ammo!
The same with personal liberties

Offline broadhead

  • Trade Count: (+1)
  • Hunter
  • ***
  • Join Date: Feb 2013
  • Posts: 138
Re: Resizing brass 30-06 to 25-06 questions
« Reply #8 on: September 03, 2022, 10:17:45 AM »
Perfect. Thank you
Die fish!

Offline GWP

  • Forum Sponsor
  • Trade Count: (+26)
  • Sourdough
  • *****
  • Join Date: Dec 2010
  • Posts: 1751
  • Location: Big Sandy-By Westport
Re: Resizing brass 30-06 to 25-06 questions
« Reply #9 on: September 03, 2022, 12:44:22 PM »
Pretty well covered.
You are basically fire forming. Sometimes they are still fairly accurate. It will be interesting if the fireformed cases have the bulge.
They should be a near perfect representation of your chamber.
Cuterebra are NOT cute!

Offline broadhead

  • Trade Count: (+1)
  • Hunter
  • ***
  • Join Date: Feb 2013
  • Posts: 138
Re: Resizing brass 30-06 to 25-06 questions
« Reply #10 on: September 03, 2022, 05:08:00 PM »
That's what I thought about fire forming too. Didn't get a chance to shoot. It basically creates reverse runout below the neck and above shoulder. I noticed the necks are about 1-2 thousands fatter in brass size on the neck compared to regular 25-06 brass but not concerned about that since everything fits. That measurement is ball micrometer measuring brass thickness only


It's great to check in here since my mentor is no longer around. Appreciate all the responses. Great crew here.as usual
Die fish!

 


* Advertisement

* Recent Topics

Selkirk bull moose. by fishngamereaper
[Today at 11:35:11 AM]


Bow mount trolling motors by Stein
[Today at 09:05:06 AM]


Oregon results posted. by trophyhunt
[Today at 08:51:12 AM]


best draw for moose unit wise by hunter399
[Today at 08:31:10 AM]


Idaho 2025 Controlled Hunts by trophyelk6x6
[Today at 08:24:13 AM]


2025 OILS! by Ridgerunner
[Today at 07:40:49 AM]


FFL preferences or warnings in Olympia or south Sound area? by lhrbull
[Today at 06:59:24 AM]


Nooksack Archery Tag by LongBomb
[Today at 06:29:37 AM]


I’m on a blacktail mission by Turner89
[Yesterday at 11:33:35 PM]


AKC lab puppies! Born 06/10/2025 follow as they grow!!! by scottfrick
[Yesterday at 09:54:06 PM]


Basin elk by hughjorgan
[Yesterday at 09:50:49 PM]


Getting back into dogs by bearpaw
[Yesterday at 09:06:14 PM]


Cowiche Quality Buck by Nwgunner
[Yesterday at 08:55:00 PM]


MA-10 Coho by WAcoueshunter
[Yesterday at 08:50:46 PM]


Is FS70 open? by CarbonHunter
[Yesterday at 08:09:04 PM]


Muzzy Mission Quality!!! by NOCK NOCK
[Yesterday at 07:49:11 PM]


Colockum Archery Bull Tag by Smittyk44
[Yesterday at 04:23:53 PM]


49 degrees north late Moose tag by Buzzsaw461
[Yesterday at 04:11:52 PM]


I'm Going To Need Karl To Come up With That 290 Muley Sunscreen Bug Spray Combo by BULLBLASTER
[Yesterday at 03:53:35 PM]


Mature bulls during late season? by Pete112288
[Yesterday at 03:51:08 PM]

SimplePortal 2.3.7 © 2008-2025, SimplePortal