Frontier ammo 223

**Gomsaag** · 24-05-2017, 15:20

Hi guys I was out on the range the weekend shooting my ar15 DM4 and i have noticed these grey lead spreads on the paper target. Does anybody know what might be causing this? I reload my own ammo with 23 grains of S 321. Any info on this would be mutch appreciated.20170524_115233.jpg 20170524_093833.jpg

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**wave.jaco** · 24-05-2017, 15:27

Following this with interest - I have never seen this before. My completely uninformed, wild guess would be that it almost looks like the remnants of tracer burns as the bullets went through the paper.

**Andycap** · 24-05-2017, 15:34

At what distance was the target?

**Gomsaag** · 24-05-2017, 15:36

I bought a new box of frontier bullets so it aint tracers and something else i have noticed is that around 15m from the barrel u can start to see like a lead grey mist vapour, this is very confusing for me.

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**Gomsaag** · 24-05-2017, 15:37

Originally Posted by Andycap

At what distance was the target?

50-60m

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**julian** · 24-05-2017, 15:37

It looks to me like bullet separation are you using CMJ (copper coated and not full metal jackets). the thin copper coating separates from the lead core.

**Gomsaag** · 24-05-2017, 15:38

Yes i am using CMJ

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**Andycap** · 24-05-2017, 15:42

Until someone has some ideas, i would try the following, take one of your loaded rounds, find a safe direction ( a range might be better) chamber the round a few times, have a look for scratches. If you have a kinetic hammer, pull the bullet and check if the copper coat is damaged.

Also curious why 23gr, most guys seem to be using 24gr?

**Gomsaag** · 24-05-2017, 15:49

Originally Posted by Andycap

Until someone has some ideas, i would try the following, take one of your loaded rounds, find a safe direction ( a range might be better) chamber the round a few times, have a look for scratches. If you have a kinetic hammer, pull the bullet and check if the copper coat is damaged.

Also curious why 23gr, most guys seem to be using 24gr?

Thanks Andy i will let u guys know.

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**treeman** · 24-05-2017, 16:22

You are shooting a light bullet at too high a velocity for the twist you have and the construction of that particular batch of bullets. The rifling is partially shearing the coating off. Your barrel fouling will be bad.
If you look at picture you can see the mini cyclone around hole. Its quiet evident you have a right hand twist.
(sorry KK )