Quote Originally Posted by jjroth View Post
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 M1icon tracer ammo may have lit up in the barrel also.