257 DURHAM JET

257 · 1 headstamp · 1 scan

Calibre	257
In the cabinet	IMPERIAL SPORTING .25" TO .299" · 2 images

Reading the headstamp

12 o'clockMaker's name or factory code

6 o'clockCalibre or year of manufacture

CentrePrimer — Berdan or Boxer, and any seal colour

This is the 25 SOUPER (25-08) Improved, with a 40° shoulder.

2016Catalogued in the collection

2023Record last revised · 2023-05-11

Same drawer

Filed alongside