Inline FabricationADvertise hereRepackboxWideners
Lee PrecisionRotoMetals2MidSouth Shooters SupplyTitan Reloading

Results 1 to 15 of 15

Thread: 308 to 35 Rem done my way

  1. #1
    In Remembrance

    GRUMPA's Avatar
    Join Date
    Nov 2010
    Location
    Concho Az
    Posts
    2,164

    308 to 35 Rem done my way

    Figured I would finally make a thread on how I do these. I'll say it again this is not something the average every day reloader is going to be able to do. There's equipment used that isn't something that folks can just afford to get when they want it, so keep that in mind.

    I'm not done converting these either, I still have to finish up forming and reaming them but with clouds coming in I'm at a virtual stand-still since my power comes from the sun.

    The very first thing I do is run them in the stainless steel media tumbler, these need to be clean inside and out but more on the outside.



    Once I get them cleaned and dried....I size them all in a 308 sizer die to more or less remove the primer and round up the necks. Once that's done I run them all through the Dillon super swager and remove the primer crimp.

    Once done I take them to the lathe and machine the head only to .355 -.001 and there's a reason for this. If you don't what will happen is on the next forming operation the head will want to distort to the point that it will create a bowl, or curve the head to the point holding the gauge dimension is almost impossible to do correctly.

    Click image for larger version. 

Name:	35-1.jpg 
Views:	365 
Size:	47.5 KB 
ID:	137675

    I made a spud so that the primer pocket just fits into the little mandrel I made and I use a live center on the other end.

    Click image for larger version. 

Name:	35-2.jpg 
Views:	372 
Size:	41.2 KB 
ID:	137676

    I machine the head to the size I mentioned already and I put a chamfer on as well since I removed almost all of the factory chamfer.

    Click image for larger version. 

Name:	35-4.jpg 
Views:	160 
Size:	37.9 KB 
ID:	137677

    Notice when I have the case in the lathe the live center creates what I call a bell mouth, I want that to happen for easier feeding for the expander rod when I form the new neck.

    Now that I have the first part machined it's time to bring them into the house and start forming, well......the first part of it anyway.
    Click to see what I'm doing and have available, this takes you to the VS (Vendor Sponsor) section of the site. Currently..25Rem,30Rem, 32Rem, 35Rem, 257Roberts, 358Win, 338Fed, 357 Herrett, 30 Herrett, 401 Winchester, 300Sav, 221 Fireball, 260Rem, 222Rem, 250 Savage, 8mm Mauser (AKA 8x57), 25-20WCF

    Annealing Services

    http://castboolits.gunloads.com/foru...php?117-Grumpa






  2. #2
    In Remembrance

    GRUMPA's Avatar
    Join Date
    Nov 2010
    Location
    Concho Az
    Posts
    2,164
    Now that I have the head machined down it's time to reduce the body diameter, and here's what I use for that.

    Click image for larger version. 

Name:	35-5.jpg 
Views:	140 
Size:	86.5 KB 
ID:	137678

    All I use for the first swaging operation is a LEE push through .452 sizer die. Believe me when I say that it'll be ruined in short order, the process is going to open up that sizer die so plan on getting a replacement die in short order. I've brought up this point in the past.....brass can and will want to "SPRING BACK" when it's being formed, so if you think that the body diameter is going to be .452 when you swage it think again. When I swage them the first time (yes there's more than 1 swage operation) plan on the body diameter to be right about .458 or so. I had another push through die made by one of our members Goodsteel, he made 1 for me that is made from A2 and heat treated. let's say that not only the LEE push through sizer had spring back but so does the brass. If a person were to use a .451 LEE push through sizer the diameter of the body would be about .455 from spring back, both from the die itself expanding a bit and spring back from the case. So you have 2 things working against you due to expansion and contraction, so I had a custom die made just for this which I';ll add works better than I had hoped.

    The die I had Goodsteel make for me is just under .451 but the case when run through it it measures .453 so there's still some spring back from the case which is something that just can't be avoided.

    Click image for larger version. 

Name:	35-6.jpg 
Views:	122 
Size:	50.0 KB 
ID:	137679

    Once I get them run through the swage press (both times) it's now time to do the preliminary sizing. That I use the RCBS RCII press for but I did have to make a custom expander for. When I form them the first time I want the new neck so that the taper (if any) is in the inside so that when I ream them I take most of it out. If I were to use a factory sized expander the moment the expander went through it when the case is lowered any taper would now be on the outside. Here's a picture of of a factory expander on the left and the 1 I made on the right.

    Click image for larger version. 

Name:	35-7.jpg 
Views:	130 
Size:	44.6 KB 
ID:	137680

    When I form the new gauge dimension I hold it to the very low of the tolerance, I do this because after I ream the necks and use the factory expander it will want to pull the neck and make the gauge dimension longer. Normally it will do that about .003 give or take, but whenever you do machining your the one that needs to be in control.



    This is a picture of a 358Win but it'll give you a real good idea of what I have to use to make sure things are where they're supposed to be. There is no guessing when you do something like this, so if you don't have proper equipment or tools I wouldn't advise attempting to do something like this.

    The next procedure will be setting them up on my lathe and reaming the necks, I have my own way of doing that but like I mentioned I need the power which I don't have right now. We are supposed to have nothing but clouds for the next few days, so I'll get the last of the procedure up next week some time. But at least this will give folks an idea of what it involves when I do them..
    Click to see what I'm doing and have available, this takes you to the VS (Vendor Sponsor) section of the site. Currently..25Rem,30Rem, 32Rem, 35Rem, 257Roberts, 358Win, 338Fed, 357 Herrett, 30 Herrett, 401 Winchester, 300Sav, 221 Fireball, 260Rem, 222Rem, 250 Savage, 8mm Mauser (AKA 8x57), 25-20WCF

    Annealing Services

    http://castboolits.gunloads.com/foru...php?117-Grumpa






  3. #3
    Boolit Grand Master

    dragon813gt's Avatar
    Join Date
    Feb 2012
    Location
    Somewhere in SE PA
    Posts
    9,531
    Very impressive and thanks for sharing. The use of a lathe precludes me from doing this conversion myself. It's on the list of tools I need

  4. #4
    Boolit Master
    Join Date
    Aug 2008
    Location
    Southern Ohio
    Posts
    533
    Great explanation! I like that spud system and the way your live center starts the flair.

    BTW, when you swage down the body, does it close the primer pocket any?
    Last edited by KLR; 04-23-2015 at 09:15 PM.

  5. #5
    In Remembrance

    GRUMPA's Avatar
    Join Date
    Nov 2010
    Location
    Concho Az
    Posts
    2,164
    Not a bit actually, but if you don't machine the head down plan on that happening..
    Click to see what I'm doing and have available, this takes you to the VS (Vendor Sponsor) section of the site. Currently..25Rem,30Rem, 32Rem, 35Rem, 257Roberts, 358Win, 338Fed, 357 Herrett, 30 Herrett, 401 Winchester, 300Sav, 221 Fireball, 260Rem, 222Rem, 250 Savage, 8mm Mauser (AKA 8x57), 25-20WCF

    Annealing Services

    http://castboolits.gunloads.com/foru...php?117-Grumpa






  6. #6
    Boolit Master
    Join Date
    Aug 2008
    Location
    Southern Ohio
    Posts
    533
    Hmmm... I have a batch of brass that doesn't fit as tightly as I'd like with my Winchester primers. Maybe I could leave the rim .002 larger than the die and swage the primer pocket down slightly.

    BTW, have you tried swaging in smaller steps?

  7. #7
    In Remembrance

    GRUMPA's Avatar
    Join Date
    Nov 2010
    Location
    Concho Az
    Posts
    2,164
    If I had what seemed like slightly larger primer pockets, I would just work with different brass. I'm not known for fussing with brass that's not considered Unobtainium so why bother.

    For me when I swage the body down I don't want to make a career out of it. When a person pulls a handle 2k times a day it turns laborious real quick.
    Click to see what I'm doing and have available, this takes you to the VS (Vendor Sponsor) section of the site. Currently..25Rem,30Rem, 32Rem, 35Rem, 257Roberts, 358Win, 338Fed, 357 Herrett, 30 Herrett, 401 Winchester, 300Sav, 221 Fireball, 260Rem, 222Rem, 250 Savage, 8mm Mauser (AKA 8x57), 25-20WCF

    Annealing Services

    http://castboolits.gunloads.com/foru...php?117-Grumpa






  8. #8
    Vendor Sponsor

    W.R.Buchanan's Avatar
    Join Date
    Mar 2011
    Location
    Ojai CA
    Posts
    7,912
    Quote Originally Posted by GRUMPA View Post
    When a person pulls a handle 2k times a day it turns laborious real quick.
    This is why they make grand children.

    Randy
    "It's not how well you do what you know how to do,,,It's how well you do what you DON'T know how to do!"
    www.buchananprecisionmachine.com

  9. #9
    Boolit Master madsenshooter's Avatar
    Join Date
    Jan 2006
    Location
    Upper Appalachia, SE Ohio
    Posts
    2,982
    Just for the heck of it, I made a few 35 Rem from heavy GI 7.62x51mm. I simply used a swage die that CH4D made for me when I wanted to make 6.5 Japanese from the GI brass. Their swage die was 8x56MS die that you ran the brass into with a pusher and knocked back out with a hammer.
    "If people let the government decide what foods they eat and what medicines they take, their bodies will soon be in as sorry a state as are the souls of those who live under tyranny."

    -Thomas Jefferson

  10. #10
    In Remembrance

    GRUMPA's Avatar
    Join Date
    Nov 2010
    Location
    Concho Az
    Posts
    2,164
    After doing the preliminary case forming I took the cases to the lathe for the reaming operation. This goes quick but after indicating everything in to within .001 it's a simple matter of removing the material from the inside of the neck.

    Click image for larger version. 

Name:	35-10.jpg 
Views:	88 
Size:	69.7 KB 
ID:	138295

    Click image for larger version. 

Name:	35-11.jpg 
Views:	241 
Size:	76.6 KB 
ID:	138296

    After the reaming operation I bring them back into the house for there final forming. I just put the factory expander rod in the sizing die and run them up in the die which goes fairly quickly. After that it's back out to the shop to run them on the trimmer to bring them to 1.920-.020. Here's a before, during, and after trimming shot.

    Click image for larger version. 

Name:	35-9.jpg 
Views:	154 
Size:	49.0 KB 
ID:	138297
    Click to see what I'm doing and have available, this takes you to the VS (Vendor Sponsor) section of the site. Currently..25Rem,30Rem, 32Rem, 35Rem, 257Roberts, 358Win, 338Fed, 357 Herrett, 30 Herrett, 401 Winchester, 300Sav, 221 Fireball, 260Rem, 222Rem, 250 Savage, 8mm Mauser (AKA 8x57), 25-20WCF

    Annealing Services

    http://castboolits.gunloads.com/foru...php?117-Grumpa






  11. #11
    Boolit Master


    georgerkahn's Avatar
    Join Date
    Sep 2013
    Location
    South of the (Canada) border
    Posts
    1,622
    Thank you, GRUMPA, for posting this, as well as -- of course -- doing this. I AM impressed, and as soon as my scant supply of .35 Rem diminishes -- I do plan on ordering some from you!
    Best!
    georgerkahn

  12. #12
    In Remembrance

    GRUMPA's Avatar
    Join Date
    Nov 2010
    Location
    Concho Az
    Posts
    2,164
    Quote Originally Posted by georgerkahn View Post
    Thank you, GRUMPA, for posting this, as well as -- of course -- doing this. I AM impressed, and as soon as my scant supply of .35 Rem diminishes -- I do plan on ordering some from you!
    Best!
    georgerkahn

    I get asked all the time if I have any left, so think of it this way.

    No matter what time of year it is, it'll always be there.

    Think of it as a supply that never runs out.
    Click to see what I'm doing and have available, this takes you to the VS (Vendor Sponsor) section of the site. Currently..25Rem,30Rem, 32Rem, 35Rem, 257Roberts, 358Win, 338Fed, 357 Herrett, 30 Herrett, 401 Winchester, 300Sav, 221 Fireball, 260Rem, 222Rem, 250 Savage, 8mm Mauser (AKA 8x57), 25-20WCF

    Annealing Services

    http://castboolits.gunloads.com/foru...php?117-Grumpa






  13. #13
    Boolit Buddy
    Join Date
    Jan 2015
    Posts
    100
    Thank you for showing us the process. When i get a .35 I'll be sure to get some brass from you

  14. #14
    Boolit Master


    Join Date
    Oct 2011
    Location
    Atlanta, NY 14808
    Posts
    1,451
    I read on the internet-gotta be true, right-that 35 Remington brass is long lived because of the low pressures for the cartridge.
    Do you have any feedback on the expected life of your converted brass.
    Regards
    Bill
    Micah 6:8
    He hath shewed thee, O man, what is good; and what doth the LORD require of thee, but to do justly, and to love mercy, and to walk humbly with thy God?

    "I don't have hobbies - I'm developing a robust post-apocalyptic skill set"
    I may be discharged and retired but I'm sure I did not renounce the oath that I solemnly swore!

  15. #15
    In Remembrance

    GRUMPA's Avatar
    Join Date
    Nov 2010
    Location
    Concho Az
    Posts
    2,164
    On something like that the only thing I can say is to get into the 35Rem thread in the VS section, or click the link in my signature and go from there. And by that... PM some of the members that have gotten some of them and ask them. Typically when folks receive it they remark on how well they look, and that's about it. Nobody has ever gotten back to me with an expired case yet, not ever.
    Click to see what I'm doing and have available, this takes you to the VS (Vendor Sponsor) section of the site. Currently..25Rem,30Rem, 32Rem, 35Rem, 257Roberts, 358Win, 338Fed, 357 Herrett, 30 Herrett, 401 Winchester, 300Sav, 221 Fireball, 260Rem, 222Rem, 250 Savage, 8mm Mauser (AKA 8x57), 25-20WCF

    Annealing Services

    http://castboolits.gunloads.com/foru...php?117-Grumpa






Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check