Go Back   Alberta Outdoorsmen Forum > Main Category > Guns & Ammo Discussion

Reply
 
Thread Tools Display Modes
  #1  
Old 04-12-2018, 03:53 PM
Dean2's Avatar
Dean2 Dean2 is online now
 
Join Date: Dec 2008
Location: Edmonton
Posts: 8,339
Default How to make 7x57 Mauser Brass

Some brass is far easier to find, and thus a lot cheaper, than others. For some reason, as of late 7x57 has become scarce, and the price of new brass has really shot up. I thought some others might benefit from knowing that 7x57 brass is really easy to make and there are a number of choices.

There still seems to be a lot of boxer primed surplus 8x57 around, that one you can simply neck down, as you can with 9 and 9.3x57. If you can't easily find any of that, the good old 270 makes a perfect substitute. I bought 100 once fired matching Remington for $30 at the Shootist, vs $90 for 100 7x57 Privi plus shipping from Tradex. I actually had enough matching 30-06 brass to do the job but my buddy shoots an 06 so I save the brass for him. With the 270 brass, I don't own one and neither does anyone I hunt regularly with.

Take your 270 brass and using a Dremel cutoff wheel or similar, cut off the neck just about at the neck shoulder junction. You want to leave about one to two widths of the cutoff wheel on there so it is easy to square up with your case trimmer. Clean up the cut with a champhering tool.

Apply a light coat of Imperial wax to the body, and neck. Run this into your seating die, with the seater removed and the die one turn from bottoming out so you don't put a crimp on the brass. Once you have done the full batch, take and lightly lube or graphite the INSIDE of the short neck. You could skip this step but it makes better brass and far easier than using only the FL die.

Now run these through your FL sizing die with the decapping rod in place. Make sure the FL die is adjusted all the way down so that it is caming on the up stroke i.e. 1/8 turn past touching the shell holder with the ram all the way up.

This should give you finished brass that is about 2.238 long, trim to 2.225 and try in your gun. It should feed and close perfectly smooth. If it binds a hair, turn your FL die down another 1/16th at a time till you get a perfect feed. Do the rest of the batch now that you have the FL die set perfectly. (Remeber, once the ammo is fire formed you will want to neck size or back the FL die way off, at least 1 1/2 turns from touching shell holder, so you aren't over sizing your nicely tailored to chamber brass.)

The same methods will work with 30-06 brass except 30-06 brass is only 2.494 long, vs 270 at 2.590. The 1/10 isn't much but it means you will want to leave a little more neck on the 30-06 when you are trimming it with the Dremel so that your 7x57 brass still have enough to clean up on the trimmer.

This method requires no special dies or equipment, just what you already have on hand. The method works an a great many other brass reforming operations, 221FB or 223 brass to 221 FB and then to to 20 Vartarg, 17 FB or 17 MKIV, 22 Hornet to 17 HH, as couple of examples. Hope this is helpful and that others will post easy conversions for cheap brass to replace expensive or hard to get brass.

Last edited by Dean2; 04-12-2018 at 04:00 PM.
Reply With Quote
  #2  
Old 04-12-2018, 07:41 PM
David Henry David Henry is offline
 
Join Date: Apr 2010
Posts: 701
Default

Good post, many more $$$$ saving options are out there to the budget minded hand loader. Who else can add to O.P. with other caliber and case conversions, and let us know how you did it. D.H.
Reply With Quote
  #3  
Old 04-12-2018, 10:26 PM
Johnny G1 Johnny G1 is offline
 
Join Date: Oct 2015
Location: Clearwater BC
Posts: 233
Default

I have done the same, 270 into 257, one pass through the 257 die with Imperial Sizing Wax and then trim to length, size down my Lake City 06 brass to 25-06 in 2 passes using same wax and fire form to 25-06 Mashburn.
Reply With Quote
  #4  
Old 04-13-2018, 09:03 AM
JamesB JamesB is offline
 
Join Date: Jun 2011
Posts: 885
Default

Too bad you missed the close out at Wholesale here in Calgary. They had literally dozens of boxes of 7x57mm ammo left at the end and had it discounted 80% off. I don't even think they sold it all at that price.
Reply With Quote
  #5  
Old 04-13-2018, 09:58 AM
Dean2's Avatar
Dean2 Dean2 is online now
 
Join Date: Dec 2008
Location: Edmonton
Posts: 8,339
Default

Quote:
Originally Posted by JamesB View Post
Too bad you missed the close out at Wholesale here in Calgary. They had literally dozens of boxes of 7x57mm ammo left at the end and had it discounted 80% off. I don't even think they sold it all at that price.
That would have been great. Neither of the Edmonton stores had any 7x57 for sale during the deep discount period.
Reply With Quote
  #6  
Old 04-13-2018, 11:42 AM
tikka250's Avatar
tikka250 tikka250 is offline
 
Join Date: Jan 2013
Location: East
Posts: 1,675
Default

Thanks! That's awesome info. I was getting to the point where it was more cost effective to buy loaded ammo for the brass than to buy the brass itself. It also just so happens that I have a pile of un-used 270 kicking around
__________________
HOLD ON FUR!

life's too short to fish nymphs
Trail cameras and drones aren't the only thing ruining hunting, lazy People are really inovative.
Reply With Quote
  #7  
Old 04-13-2018, 12:32 PM
double gun double gun is offline
 
Join Date: Mar 2008
Location: Alberta
Posts: 4,293
Default

Quote:
Originally Posted by David Henry View Post
Good post, many more $$$$ saving options are out there to the budget minded hand loader. Who else can add to O.P. with other caliber and case conversions, and let us know how you did it. D.H.
I donít want to hijack the op thread without his consent but I have one that I could add.
Reply With Quote
  #8  
Old 04-13-2018, 01:22 PM
Dean2's Avatar
Dean2 Dean2 is online now
 
Join Date: Dec 2008
Location: Edmonton
Posts: 8,339
Default

Quote:
Originally Posted by double gun View Post
I donít want to hijack the op thread without his consent but I have one that I could add.
Absolutely add another. That is the whole hope wheŮ I srarted the thread.
Reply With Quote
  #9  
Old 04-13-2018, 01:31 PM
David Henry David Henry is offline
 
Join Date: Apr 2010
Posts: 701
Default

An old friend who had no luck finding 40-70 Sharps cases would take the bottom half of a 30-40 Krag and soft solder the front half of a 30-30 Winchester case to it, then run it through his die and trim to length. All low pressure stuff, and it worked without separation after several firings. David.
Reply With Quote
  #10  
Old 04-13-2018, 02:26 PM
Mhunter51 Mhunter51 is offline
 
Join Date: Jan 2009
Location: saskatoon
Posts: 853
Default

6mm remington ( or 244 ) would also work and no trimming and cutting back. Same case, just the neck different.
Reply With Quote
  #11  
Old 04-13-2018, 02:55 PM
double gun double gun is offline
 
Join Date: Mar 2008
Location: Alberta
Posts: 4,293
Default

This isnít really anything new, just a different technique for making 350 brass.
I read about forming 350rm brass from any magnum brass. The problem is the store bought ďcase forming dieĒ does the sizing in one step resulting in a fairly high failure rate. So I had an idea for a forming die.... I made a die that takes replaceable shoulder/neck inserts incrementally tighter. I made 4 inserts to really ease the process. I have not lost a case using this setup.

This is 300wm and a 375 H&h range picked up brass...




Next issue was hacksawing necks off became a pain so I built a crude cutoff saw thatís fast and fail safe.
Reply With Quote
  #12  
Old 09-04-2018, 02:01 PM
Dean2's Avatar
Dean2 Dean2 is online now
 
Join Date: Dec 2008
Location: Edmonton
Posts: 8,339
Default

Real good addition. Any others?
Reply With Quote
  #13  
Old 09-04-2018, 03:20 PM
Echo-Gecko Echo-Gecko is offline
 
Join Date: Sep 2008
Posts: 295
Default

Quote:
Originally Posted by JamesB View Post
Too bad you missed the close out at Wholesale here in Calgary. They had literally dozens of boxes of 7x57mm ammo left at the end and had it discounted 80% off. I don't even think they sold it all at that price.
I bought them all
Reply With Quote
  #14  
Old 09-05-2018, 08:38 AM
andy1 andy1 is offline
 
Join Date: Jan 2017
Posts: 141
Default

Be careful with wrong head stamps scarey things can happen. Safety first even if it costs a few $$$ extra. Be careful out there.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 02:20 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.