One of my .308 cases keeps over flowing with powder???

[Chiquita]

I was filling powder in my 17 times fired Starline cases and things were going great. Except, one of the cases kept over flowing with powder.

WTH??? I tried it again, over flowed. Put it aside for the last case, tried it again, it over flowed. Seriously???

I have been known to make mistakes, maybe a 6 mm case got mixed. Nope that is not the issue. Left over powder from the last firing session?

Due to the head scratcher, my head started to bleed. I brought out the borescope hoping to see what it looks like on the inside.

Looks like a bug of some type, maybe June bug.

 

[Mike F H]

I was filling powder in my 17 times fired Starline cases and things were going great. Except, one of the cases kept over flowing with powder.

WTH??? I tried it again, over flowed. Put it aside for the last case, tried it again, it over flowed. Seriously???

I have been known to make mistakes, maybe a 6 mm case got mixed. Nope that is not the issue. Left over powder from the last firing session?

Due to the head scratcher, my head started to bleed. I brought out the borescope hoping to see what it looks like on the inside.

Looks like a bug of some type, maybe June bug.

So far I haven’t had a bug/ beetle in a cartridge case that I know of,but I have had a tiny spider in the drop tube of my powder thrower,which didn’t help.

 

[46and2]

This is why one piece of Lapua 6br brass was so heavy.

 

[SmittyJon]

I was filling powder in my 17 times fired Starline cases and things were going great. Except, one of the cases kept over flowing with powder.

WTH??? I tried it again, over flowed. Put it aside for the last case, tried it again, it over flowed. Seriously???

I have been known to make mistakes, maybe a 6 mm case got mixed. Nope that is not the issue. Left over powder from the last firing session?

Due to the head scratcher, my head started to bleed. I brought out the borescope hoping to see what it looks like on the inside.

Looks like a bug of some type, maybe June bug.

Had my share of overflowing cases thru the years. The usual cause is an insect called a "mud dobber." Seems they'll find something with a hole in it about the diameter of a pen to build in.

Empty shell cases left in the shop fills the bill, but so doesn't string trimmer exhausts, oxy-acetylene regulator vent holes, chainsaw exhausts, etc. The mud is very hard and difficult to remove, so you really have to really get after it to clean it out. The oxygen regulator was ruined and had to be rebuilt. Grrrr!

SJ