5.56 tracer bullet length odd?

[338sniper]

I purchased 5k pulled 5.56 tracer bullets to reload. I was sifting through them and this one stuck out to me. It is almost 1/4" longer than the others. Sure it might stay lit for a further distance but has anyone else ever seen this and wouldn't it change the grains, accuracy, and velocity of the round?

Sorry for the quality or lack there of in the photo.

 

[slimplmbr]

Did you weigh the longer bullet? It would definitely be heavier I think. I wouldn't load it up though, it would take up more room in the brass to get the correct OAL. That in turn would create a higher pressure round, probably an unsafe pressure.

 

[Boiled Owl]

Looks like it might be a 62gr long range tracer. I have some can measure the length when I get back to the shop

 

[Cannon]

I loaded a few the other day. I seated them to magazine length and backed off one full grain. The few I shot showed pressure signs so I backed off another half grain. I didn't get a chance to get the chrony out but after I reduced my charge 1.5 grains I didn't show any pressure signs. I only shot a few, less than 15 all together. Hopefully I'll do some more by next week.

 

[Boiled Owl]

Finally measured mine. 1.106". 62gr.

 

[opus1776]

Can you post some better pics of the tip and the base of the bullet? From what I have read on arfcom, the longer bullet that you have is may not be a tracer, but the new super green bullet --- m855a1. The 855a1 is a solid copper bullet with a steel tip...

======================================
"Nothing tastes as good as skinny feels" K. Moss
You can NEVER be too rich or too thin.
Life is not a journey, but a series of unplanned detours...
Perfection: is not a goal---it's a demanded expectation.

 

[Cerberus]

Can you post some better pics of the tip and the base of the bullet? From what I have read on arfcom, the longer bullet that you have is may not be a tracer, but the new super green bullet --- m855a1. The 855a1 is a solid copper bullet with a steel tip...

.

Where can these be found? I want a few.

 

[opus1776]

Where can these be found? I want a few.

AFIAK the 855a1 is for .mil only. Some folks have managed to get a few mixed in with pulldowns.....


======================================
"Nothing tastes as good as skinny feels" K. Moss
You can NEVER be too rich or too thin.
Life is not a journey, but a series of unplanned detours...
Perfection: is not a goal---it's a demanded expectation.

 

[Cannon]

I took a picture of some of the 223 bullets I had on hand for comparison to the 62 grain tracer.

From left to right here are the weight and lengths:

M856 62 Grain Tracer - 60.9 grains 1.100 length
M855 62 Grain Penetrator - 62.7 grains .912 length
M193 55 Grain FMJBT - 54.7 grains .732 length
75 Grain Hornady BTHP - 75.0 grains .979 length
75 Grain Privi (Wideners) BTHP - 75.3 grains .967 length
68 Grain Hornady BTHP - 67.9 grains .978 length
62 Grain Unknown BTHP - 62.2 grains .823 length