Reeder Custom Guns - 10mm Bullet Sizes...

Huey
10mm Bullet Sizes...
Tuesday, November 19, 2019, 18:13

I'm afraid I made a rookie mistake today. In loading for the 38-40, two bullets wouldn't crimp tight enough to suit me.

Foolishly, I assumed the size on the box was correct. They were plainly marked .400", but this proved incorrect. So, I measure a few to find out what the problem was.

Here's the info...
Hornady XTP 180 grn .398"
Nosler 200 grn .397"
Speer Gold Dot 180 grn .400"

I don't have any Sierra Bullets to try, but will grab some to measure.

10mm Bullet Sizes... - Huey, 2019-11-19, 18:13
- I MEASURED SPEER (.400") AND - JT, 2019-11-20, 09:54
- All the jacketed bullets I have measured are .399" +/- - WB, 2019-11-19, 18:51
  - why on earth would you want .404 bullets in a 10mm? (nm) - gary reeder, 2019-11-19, 22:13
    - I was curious about this too.. - Huey, 2019-11-20, 04:48
      - The articles said bore was .404? not .400/.401 - WB, 2019-11-20, 07:32
- DON'T EXPAND THE .38-40 BRASS. - JT, 2019-11-19, 18:23
  - I rememebr working with the .41 Long Colt - WB, 2019-11-19, 19:06
    - the old .41 LC was a 1895 "New Navy", not Army (nm) - WB, 2019-11-19, 19:19