This is one probably for Lew or John but all comments welcome.
I have a Kynoch 9mm tracer that has a magnetic cupro-nickel envelope and a normal Kynoch commercial headstamp “KYNOCH 9mm.P”.
I thought this may have been one of the rounds used in the 1939 British SMG “hosepipe” trials using Suomi guns and 100% tracer ammunition. However, the bullet weight of the Kynoch ammunition in these trials was 108 grns.
My bullet weighs 89 grns so I suspect it is from the later 1942-44 trials and is a version of design DD/L/14021. These had a spec. weight of 88 grns and a CNCS envelope. The only difference is that the tracer cavity washer on mine is copper and the spec. shows brass.
It is a much better produced bullet than the 1961 red tipped tracers that Kynoch made.
All thought welcome.