7.62 British Tracer Trials, Dark Ignition Long Range

Looking for information for the British tracer long range trials. These had tips that were hand painted from the Kynoch factory and was told that they were made in limited #'s, maybe 50? each. Headstamp K/ 61/L5A1. TonyE, from across the pond, had mentioned over on the BOCN that the objective was to obtain a trace to 1300 yards with matching to the ball trajectory at certain ranges. But there were literllay dozens of different types tested between 1956-1970 and is very hard to identify specific types because most of the documentation is for the most part long gone.
Dave S gave us a list from the early 60’s for color tips and are :
#1 purple, #2 green, #3 orange/red, #4 dark blue, #5 purple/red
#6 pink, #7 yellow, #8 ???, #9 pale blue, #10 brown
#11 ???, #12 red/green, #13???, #14 gray, #15 pale blue/pink
#16 pink/dark blue, #17 red/pale blue, #18 dk blue/paleblue, #19 purple, #20 orangered
#21 dk blue, #22 green.
Anybody have any other information or what color #'s 8, 11, and 13 are, it would be apperciated.
Heres some cutaways #5, #10, #12, #15, #16, #17. Dave will email those figures tonight. Thanks wolfgang

Wolfgang
Thanks. Having these picture will help in interpreting the x-rays of cartridges where sections are not currently available and give better picture of the subtle differences between each bullet type.

Based on the records I have, items 1-18 have the K 61 L5A1 headstamp, items 19 and 20 are headstamped K 61 (+) L2A2 and items 21 and 22 are headstamped either K 61 (+) L2A2 or K 62 K5A3 depending on bullet ogive.

NATO Dave