+ Reply to Thread
Results 1 to 5 of 5

Thread: .303 Crimp 3 groove neck die

Click here to increase the font size Click here to reduce the font size
  1. #1
    Senior Member Topfmine's Avatar
    Join Date
    Feb 2014
    Last On
    05-19-2018 @ 07:06 PM
    Location
    UK
    Posts
    132
    Local Date
    08-20-2018
    Local Time
    09:56 PM

    .303 Crimp 3 groove neck die

    I am after a .303 crimp die that crimps three notches grooves around the neck like the original wartime cases. Not sure in the shooting world if anyone has made such a die. Its not really for shooting just for show and display. I always come across .303 cases and nickle heads but it would look and a bit professional with a three groove crimp. I have used the lee factory crimp dies for show and for shooting in the past but they only crimp around the top of the neck, I was thinking of modifying a die by removing part of the circumference of the crimp edge in contact with the neck so i have three places on the die for the grooves. Any suggestions, ideas or advice.

  2. # ADS
    Friends and Sponsors
    Join Date
    October 2006
    Location
    Milsurps.Com
    Posts
    All Threads
    No Drill-Tap scope mounts for Mosin Nagant, Mauser K98K, Yugo M48, Swedish M96 and M38, Swiss K31, K11, 1911 and more! Bringing mil-surplus rifles to modern standard without damaging historical values! LIMITED TIME OFFER FROM THE AMERICAN GUNSMITHING INSTITUTE: Get Immediate Online Access To AGI's NEW Armorer's Course for Glock Pistols, Covering Every Generation of Glocks, Including the Latest Model 42/43 and Double Stack Pistols for ONLY $7.00! Brian Dick ... BDL Ltd. - Specializing in British and Commonwealth weapons Chuck in Denver ... Buy-Sell-Trade .. Guns, Cars Motorcycles Service Publications - Collectors books that earn their place in your library! Your source for the finest in High Power Competition Gear. Canadian Import and Export Services (Click banner ad for more information) Here at T-bones Shipwrighting we specialise in vintage service rifle: re-barrelling, bedding, repairs, modifications and accurizing. We also provide importation services for firearms, parts and weapons, for both private or commercial businesses.
     

  3. #2
    Senior Member Roy W's Avatar
    Join Date
    Aug 2015
    Last On
    Today @ 04:47 PM
    Location
    Hampshire
    Posts
    135
    Local Date
    08-20-2018
    Local Time
    03:56 PM
    Lee Factory Crimp Die is probably your best best

  4. Avoid Ads - Become a Contributing Member - Click HERE
  5. #3
    Advisory Panel browningautorifle's Avatar
    Join Date
    Jul 2008
    Last On
    Today @ 10:48 AM
    Location
    Victoria BC
    Posts
    20,181
    Local Date
    08-20-2018
    Local Time
    01:56 PM
    Quote Originally Posted by Roy W View Post
    Lee Factory Crimp Die
    Agreed...good luck otherwise.
    Regards, Jim

  6. #4
    Really Senior Member Bruce_in_Oz's Avatar
    Join Date
    Jun 2008
    Last On
    Today @ 02:20 AM
    Location
    Brisbane
    Posts
    1,662
    Local Date
    08-20-2018
    Local Time
    03:56 PM
    Regarding the Lee "Factory Crimp" dies.

    Love them!

    If you are desperately serious about the "stab" crimping on inert (or otherwise) .303 rounds, think about modifying a crimp die for 7.92 x 57.

    What? You ask.

    The .303 case is only a mil or so shorter than the Germanicon round.

    Where you want to crimp is a bit fatter than the relevant section normally used.

    By trial and error (or measurement and calculation), machine a bit off the bottom of mouth the die body and the crimping collet.

    Adjust the "depth" and width of the crimping "fingers" to approximate the marks on the original.

    You will get FOUR crimps rather than the original three, but that should help identify the “reproduction" ones. If you want serious “authenticity” a new crimping collet will need to be machined and heat-treated.

    Have fun.

    It is a pretty bizarre way of retaining the bullet, but it worked. It had to work, because "neck tension" as we know it from modern hand-loading, did not exist in original-spec .303 ammo..

    In the "original", the cordite bundle was inserted into an UNFORMED case, (looks a lot like a brass .410 shot-shell), a glaze-board wad sat on top of the cordite, then the case was "partially formed / necked.

    Only THEN was the bullet inserted to sit on top of the glaze-board disc and the case finally formed. Thus, the need for supplementary "stab-crimping" of the bullet.

    Note that Japaneseicon 7.7 x 56R, which is, dimensionally, pretty much identical to the "original" Brit case, also has three "stab" crimps in a similar location on the neck.

    The samples of those that I have here are a bit scruffy, apparently having been immersed in tropical seawater for a "while". However, I may go nuts and pull the bullet on the worst one for further study.

    Has anyone else already done this?

  7. Thank You to Bruce_in_Oz For This Useful Post:


  8. #5
    Senior Member Topfmine's Avatar
    Join Date
    Feb 2014
    Last On
    05-19-2018 @ 07:06 PM
    Location
    UK
    Posts
    132
    Local Date
    08-20-2018
    Local Time
    09:56 PM
    Thread Starter
    Thanks Bruce just the information i was looking for. I know it can be done. I have just bought a 303 crimp die and will get a collet re-made so there are 3 fingers to the 4 and shape the stab parts on the ends. I anticipated the length of the die body that helps in the crimping movement, good idea about using 7.92 dies instead. I have a complete workshop facility to make the collects so it will be fun to experiment.


+ Reply to Thread

Similar Threads

  1. Need to crimp bullets?
    By CouldBeWorse in forum Pattern 1913/1914 and M1917 Rifles
    Replies: 14
    Last Post: 09-16-2012, 06:14 AM
  2. 2- groove vs 4-groove barrel
    By Calfed in forum M1903/1903A3/A4 Springfield Rifle
    Replies: 4
    Last Post: 09-03-2011, 09:18 AM
  3. loading 7.62x 39 with taper crimp?
    By duggaboy in forum Ammunition and Reloading for Old Milsurps
    Replies: 4
    Last Post: 01-10-2010, 10:55 PM
  4. do you need to crimp on 30 carbine?
    By duggaboy in forum Ammunition and Reloading for Old Milsurps
    Replies: 6
    Last Post: 05-07-2009, 09:37 PM
  5. do you need to crimp on 30 carbine?
    By duggaboy in forum Ammunition and Reloading for Old Milsurps
    Replies: 6
    Last Post: 05-03-2009, 12:10 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts