M25 vs M62 Tracer?

[dbooksta]

What is the difference between M25 and M62 tracers? The only differences I can see are:

1. M25 weighs ~2 grains more
2. M25 has 2 cannelures vs 1 on the M62

Otherwise are these functionally the same? Or is there a difference in vintage, tracing compound, etc.?

Other information I would like to have:
A. Ignition temperature
B. Burn temperature
C. Burn duration
D. Tracer compound mass and density

I've searched online and come up with hardly anything. If nobody else has a source for these figures I'll try to cut up and test some of my bullets myself and post the results.

 

[ChrisGarrett]

Re: M25 vs M62 Tracer?

One is meant to be loaded in a 30'06 and the other a 308, IIRC.

I have the M-25s and they're quite long. They can be loaded in a 308 case, but one needs to use a very high density, low volume powder because that heel is going to be deep into the cartridge body proper.

I can't help you with the other stuff.

Chris