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Thread: Hardest/most elaborate case conversion you did?

  1. #1
    Boolit Buddy 15meter's Avatar
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    Hardest/most elaborate case conversion you did?

    Mine was 223 into 7.62x38r for the little Russian revolver that came into the country a couple of years back.

    Actually did it before I bought the revolver.

    Wanted to make sure that I would have a steady supply of brass. I didn't want to buy the gun and find out that brass went obsolete the day after they sold the last revolver that was imported.

    What's yours?
    Last edited by 15meter; 12-30-2017 at 12:35 AM.

  2. #2
    Boolit Master

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    Mine was a widcatt I did a 300wsm necked down and shortened with a 35* shoulder to give the same water capacity as a 6.6 284 in a shorter fatter cartridge. Looks like a 6ppc on steroids when done. I did 500 cases for it. I fired one case with 142 grn berger vlds at 2800 fps 25 times and it was still going strong. Put 11 out of 20 rds in a 1 1/2" spotting disc at 600 yds testing it. Very low SDs and extreme spreads. Bot the way I did it, it was 10 steps to a finished case.

  3. #3
    17 bumble Bee
    Take a 218 bee.
    Form 1 push the shoulder back
    Trim brass
    Ream inside neck
    Form 2 to size to 17 cal
    Trim again to length
    Full length size
    And load


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  4. #4
    Boolit Master

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    10.35x47r Italian, but I do make it a bit harder on myself by using old berdan 8mm Lebel military brass and convert it to 209 primers. Basically I expand to .35, .38, .40, run into FL sizer, convert to 209 primers on the lathe, fire form, trim.
    Back in the land of boolits.

  5. #5
    Boolit Master
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    Form .303 to 6.5X53R Dutch Mannlicher.
    Form .444 Marlin to .303
    Form .405 Win to .303
    Form .303 to 6.5 Jap
    Form 7.62 and .308 W. to 6.5 Jap
    EDG

  6. #6
    Boolit Buddy
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    .45-90 WCF to .43 Mauser
    .348 Win to 8MM Lebel
    The only amendment the Democrats support is the 5th.

  7. #7
    Boolit Master
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    30-06 family into 360 BPE 2 1/4"
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    I collect all things .32. If you have something you don't need, please let me know!

  8. #8
    In Remembrance

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    308 to 35Rem

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  9. #9
    Boolit Master


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    I've done nothing very radical. My most interesting effort was making 33 Winchester from 45-70. Knew I might have to turn case necks (and have the lathe to do it), but found rounds chambered without that step. Quite satisfying to get that 1904 Winchester 86 back in harness.

  10. #10
    Boolit Master

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    44 mag. necked to .17 cal.
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  11. #11
    Boolit Buddy
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    I did a 45 on a 38SPL case
    That was a lot of work and i have yet to develop a gun for it!
    Click image for larger version. 

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  12. #12
    Boolit Master
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    The toughest one I've done yet is 32ga. brass shotshells into .41 Swiss CF also known as 10.8x38R for the Swiss Vetterli. Quite a few steps involved. It would be easier with 8mm Lebel or .348 Winchester but that brass is expensive and as difficult or worse to obtain as 32ga shotshell.
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  13. #13
    Boolit Buddy
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    348 WCF first to 11.15 X 60R then to 10.5 X 47R. Second was 9.3 X 74R to 9 X 71 Peterlongo

    17, it would appear you need to be looking at something like the Burnside....
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  14. #14
    Boolit Buddy 15meter's Avatar
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    Quote Originally Posted by 17nut View Post
    I did a 45 on a 38SPL case
    That was a lot of work and i have yet to develop a gun for it!
    Click image for larger version. 

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    I think I need to make one of these up just so can casually leave it laying on the table at the gun club ��

  15. #15
    Boolit Buddy dimaprok's Avatar
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    223 to 221 fireball. Anneal 223 brass below neck, used lee FL die without expander to size it down. There was so much force involved that my bench would tilt! Lost probably 30% of the brass but thats ok it was free range pickup LC brass. than machine .220 mandrel on mini lathe and used live center to push brass on to it and then turn neck, once i establishes proper wall thickness i used same setting. Than i used Lyman E-Zee Trim to grab the rim and pull off the mandrel, than necks were trimmed and resized with RCBS FL die with neck expander than fine trimmed on LE Wilson trimmer, chamfered and debbured.

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    Last edited by dimaprok; 12-30-2017 at 03:28 PM.

  16. #16
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    Quote Originally Posted by 17nut View Post
    I did a 45 on a 38SPL case
    That was a lot of work and i have yet to develop a gun for it!
    Click image for larger version. 

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    Caliber: American potato masher 45
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  17. #17
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    30-06 to 240 Weatherby Magnum.

  18. #18
    Boolit Buddy
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    Quote Originally Posted by vzerone View Post
    30-06 to 240 Weatherby Magnum.
    This conversion is really not that difficult with the proper dies.
    CH4D can supply the belt forming die which will create the basic 240 Weatherby belted-head on an ‘06 casing (or anything similar) in a single pass with a good, heavy press... The necking down operations can be simplified by using the 25-06 casing, although the 30-06 and 270 are certainly “doable”.

  19. #19
    Quote Originally Posted by stubshaft View Post
    44 mag. necked to .17 cal.
    Hi Stubshaft, tell us more about this cartridge and any photos.

    I have managed to get 44 magnum to .224 with 40 degree shoulder, a copy of .224 Stark chambered in a MK3 Lee Enfield.

  20. #20
    Boolit Bub
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    That 45-38 special just needs to be fire formed.

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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