Bulge in my hp ammo?

[jcabin]

I'll try and get pictures up tommorow morning.

I bought a 20rd box of 124gr +p speer gold dot, 9mm.

I just noticed when looking at them earlier, around where the bullet is seated inside the casing, it kind of bulges out and then dips back in where bullet ends.

I compared it side by side with my fmj and some federal hydra-shok and neither of those rounds have this bulge.

whats up?

[Emptymag]

Could wait for pics, but is it all the way around, or just bulged in one spot/on the side?

I always look at my rounds as I load them. I found a WWB(or was it UMC?)with an obvious flaw/bulge in it once.

[Flash]

I'll try and get pictures up tommorow morning.

I bought a 20rd box of 124gr +p speer gold dot, 9mm.

I just noticed when looking at them earlier, around where the bullet is seated inside the casing, it kind of bulges out and then dips back in where bullet ends.

I compared it side by side with my fmj and some federal hydra-shok and neither of those rounds have this bulge.

whats up?

I've had Fiocchi that loked that way, but not any American stuff.

I wouldn't see it as very much of a defect if they shot alright.

Have you mic'd the rounds? Real numbers are worth much more than a picture, in this case.

Flash

[jcabin]

Could wait for pics, but is it all the way around, or just bulged in one spot/on the side?

I always look at my rounds as I load them. I found a WWB(or was it UMC?)with an obvious flaw/bulge in it once.

the bulge is all the way around.

Have you mic'd the rounds? Real numbers are worth much more than a picture, in this case.

Flash

Mic'd the rounds?

[JCWohlschlag]

Mic'd the rounds?

“Measured with a micrometer,” I believe.

[Pa. Patriot]

I'll try and get pictures up tommorow morning.

I bought a 20rd box of 124gr +p speer gold dot, 9mm.

I just noticed when looking at them earlier, around where the bullet is seated inside the casing, it kind of bulges out and then dips back in where bullet ends.

I compared it side by side with my fmj and some federal hydra-shok and neither of those rounds have this bulge.

whats up?

Common and normal.

[andrewjs18]

yeah..my 124gr gold dots have bulges too..fire just fine.

[Xringshooter]

The "bulge" isn't necessarily a bulge. When the cases are formed (or reformed when you reload) they sometimes are a bit undersized when compared to the OD of the bullet. This is not a bad thing as semi-autos headspace on the case mouth and so you don't want to use a roll crimp to hold the bullet in place, and the bit undersized case helps secure the bullet. If they feed fine and shoot ok, then nothing to worry about.

[Jim_Fleming]

The only thing that bulge indicates, is that you're going to have a nice consistent "bullet pull" caused by the nice and snug case.