Has anyone played around with trimming the case length on the 400 GNR to something that would fit a pistol? either
- 1.383" (Casull length); or
- 1.29" (magnum-length)?
Has anyone tried using brass from the higher pressure cases in the 30-30 family? e.g. 375 Winchester, 225 Winchester, or 360 Buckhammer?
-
400 GNR - Short?
- Keith, 2026-05-11, 18:42
![[*]](themes/default/images/complete_thread.png "Open whole thread")
-
Yes, it’s called the .401 Herters Supermag
- WB, 2026-05-11, 20:55
-
No, not quite
- Keith, 2026-05-12, 18:37
- I think the .400" is too big for a .30-30, .225, whatever - WB, 2026-05-13, 13:10
- 401 GNR #2- 445 SM necked down (nm) - Sean Harper, 2026-05-12, 04:34
-
No, not quite
- Keith, 2026-05-12, 18:37
- neck ream - AlanT, 2026-05-11, 19:19
-
Yes, it’s called the .401 Herters Supermag
- WB, 2026-05-11, 20:55