Been doing this for 25 + years. I also found a way to load the long M62 tracer into 7,62x39 cases that functions flawlessly without overpressure. I have used these tracers in 7,65 arg , 303 brit and 7,7 jap by using a 30 cal expander on the die decap rod and crimping bullet once seated. Worked like a charm and accuracy was always good.Tracer really dried up after 4 Nov. I've bought some from Ammunition To Go in the past but after the election all of it is just flat out gone. I also got a couple hundred rounds of it on Gunbroker. Gunbroker is your best bet to find some. Another thought is to buy some pulled US .308 tracer bullets and reload them into 7.62X54R cases.