Need Help With Tracer Load --

[dbooksta]

For those interested, I dissected and analyzed a number of these bullets, and concluded that the M62 and M25 bullets are nearly identical. Details and measurements here:
EmptorMaven » Blog Archive » M25 and M62 .30 caliber Tracer Bullets

Information

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[wolfganggross]

The real diffrence in the m25 and the m62 is;

m25 tracer 30.06- (or early versions t10) has a 145 gr bullet with 50 gr of IMR 4895 powder and travels 2665 fps. The tracer compound contains compostion R 321 which is 16% polyvinyle chloride, 26% magnesium powder, 52% strontium nitrate.

m62 tracer 7.62x51- has a 142 gr bullet with 46 gr WC 846 powder and travels 2750 fps. The tracer compound contains compostion R 284 which is 17% polyvinyle chloride, 28% magnesium powder, and 55% strontium nitrate. (Also used on m196 .223)

and just to throw in;

m276 dim tracer compound is compostion R 440 which is barium perioxide, strontium perioxide, calcium resonate, and magnesium carbonate.
wolf

[jjroth]

and an extremely abrasive residue is left.

Are your group holding tight???

[tazaroo]

and an extremely abrasive residue is left.

Are your group holding tight???

These do not burn in the barrel but rather light up about 70 to 100 yards out. The only residue left in the barrel is powder and copper fouling. To the very best of my knowledge, the only military tracer of recent existence was the M196 5.56 NATO tracer to start burning in the barrel and those were used from the early 60's to the early 80's without issue. Early red tip 30-06 M1 tracer ammo may have lit up in the barrel also.