British .45 ACP tracer and AP from the 1930's

Hi all,

What is the history behind these 2 rounds? What are the internal construction details?

The AP is headstamped KYNOCH 45 . A.C. while the tracer is KYNOCH .45 . A.C (periods in different places).


I also would not mind getting some answers on those I have 3 of them
with differing periods.Here is no 1
KYNOCH 45 A C no periods No2 Kynoch A.C. No 3 Kynoch 45.A.C.
What is the difference between them if any??

Paul & sherryl
Paul sorry have both but no help with the answers your needing. Neat label reproductions.

Think it must have to do with the era (or perhaps line) they were made. But no proof of that.

Also those dots are sometimes / often very faint & so easy to miss. There are 6 Kynoch variations of these dots listed in the latest .45 checklist, but no one seems to have them all.

Makes sense your observation,yes I am having those for a whileI never
thought much of it,but always was wondering until this post by Paul Smith
but as you know when it comes to our business the most crazy things
appear out of nowhere in particular often those 45Cal and 9mm.

Thanks Pete. I did some digging in the Resource Center and with P. Labbett’s notes of various ctgs he broke down, these 2 rounds are noted.

The tracer is noted to have a flat base, 16.8mm in length and weigh 204.5 gr.
The AP is noted to have a flat base, 15.7 mm in length and weigh 229.5 gr. It also mentions a steel core. I’d wondered if it was a steel core or a thicker jacket.


Hi Paul
The green stripe has a CN bullet jacket not CNCS & with a magnet one can feel the core.
Hope that is of help. No idea of the thickness.

Don’t know if any of the Kyncoh / Fensby drawings might show that?