Reeder Custom Guns - Back during the "Primer Shortage" when it first

WB
Back during the "Primer Shortage" when it first
Wednesday, March 20, 2019, 12:36

developed, the .240 Raptor, I sourced some CCI Small Rifle caps. But using old 6mm TCU data I began getting "cupping" or "primer extrusion". That is the primer metal beginning to flow into the firing pin hole, creating a raised lip around the firing pin indentation. Typically this means very high pressures. But I new this should not be as the capacity of the data I was using was much less than the more capacious .240 Raptor. Sean told me he had an issue or two and it went away. I began trying different primers as I could find them. Finally I got hold of some wonderful Remington #7-1/2 small rifle Bench Rest primers. Boy they got things in line. I was able to do realistic load development with true progressive results. I sort of hoard them for special ctgs. such as the Raptor now. If you can find any they are truly special. Since then I have tried another lot of CCI SR and had no problems. I'd not want to blight a reputation on one speculative case but that is my odd experience and it has not repeated itself.

240 Raptor - Paul, 2019-03-20, 09:47
- I use WSR: Win. Small Rifle (nm) - Rsim, 2019-03-20, 10:04
- according to the powder you are using. If you - Gary Reeder, 2019-03-20, 10:04
  - CCI makes them (nm) - Blake, 2019-03-20, 15:50
  - 4198 and 4895 - Paul, 2019-03-20, 10:08
    - you can get away with the standard small rifle primers (nm) - Gary Reeder, 2019-03-20, 10:13
      - Back during the "Primer Shortage" when it first - WB, 2019-03-20, 12:36
        I used small rifle - Paul, 2019-03-20, 15:50
        in the "Great Primer Shortage of 2013" or somewhere - Gary Reeder, 2019-03-20, 15:48
        That's good stuff Gary. (nm) - Sid R, 2019-03-20, 20:38