Converting .280 REM, 30-06 or 7X64

to

8X60mmS Mauser

Step 1. Set up an end-mill (slot drill) in a drill-press

Step 2. Cut down to approx 60.35mm

Step 3. Take of the sharp edges (case shown before de-burring)

Step 4. Picture of de-burred case shown with a Lee inside-out tool

Step 5. Set up a 8X57 Mauser resizing die. Set it with a gap to allow for the extra length

Step 6. I use a Ruger 10/22 bolt release as a gauge for setting the gap. The differences between the shoulders on 8x57 and 8x60 is appox 1.7mm              

Step 7. Lube the case and place it in the press

Step 8. Slowly and firmly force the case into the die

Step 9. Picture of the re-sized case

Step 10. Trim the case length (I use a Lee hand trim tool)

Step 11. The Lee trim tool keeps the neck square

Step 12. Trim to 59.95mm +or- .05mm (try and keep them the same if possible)

Step 13. The finished case (right) compared to a .280REM case (left)

Step 14. Prime the case. I use a Lee auto-primer and CCI 200 LR primers

Step 15. The primed case             

Step 16. Prepare your powder. I use Vectan SP7 but there are many other types

Step 17. You could use a powder measure if your are making a several cartridges

Step 18. Use a scale to test your charge every few loads

Step 19. I use 48 grains for my loads. Always take your time checking your charge

Step 20. Use a funnel to fill your cases (If not using a powder measure)

Step 21. Place the seating die into the press and put the case into the shell holder

Step 22. Choose you bullet

Step 23. 196 grain S&B FMJ (left) and 170grain Hornady Interlock soft point (right)

Step 24. Place the bullet squarely onto the case

Step 25. Slowly rise the case and bullet into the die

Step 26.  I seat my bullets so the overall cartridge length is 83mm when using S&B FMJ