Primer surprise

[Fast14riot]

Loading up a few pressure ladder rounds in my 6x250 trying to get it figured out, a primer in the tray caught my eye. The anvil is visibly higher than the rest and appears to have a little less compound! These are Federal 210, I still seated it but marked the case so I can take note of any anomalies in the data.

Never been able to sort primers by eye before, lol!

 

[quest450]

this is the reason why some shooters weight sort primers

keep us posted please IDK the speed and the POI, thanks.

 

[L.Sherm]

Maybe that's why there's 210 and 210M

 

[Rocketvapor]

Is that priming compound or sealant?

 

[jelenko]

Is that priming compound or sealant?

Yeah. I've not used 210's, but the SRP's that I've used don't have anything covering the anvil.

 

[Bill K]

You probably will see or hear no difference when you fire the marked one. But let us know what you do find out.

 

[K22]

I have literally loaded thousands of small pistol, small rifle, and large rifle Federal Primers for many years.

Several years ago, I had a small rifle primer that did not ignite. When I carefully disassembled the cartridge I discovered that the primer cup had no priming compound but there was an anvil. Since then, I always visually check the primers in the primer tray before using. Never found that defect again, at least to date.

 

[Fast14riot]

I didn't record velocity today, but the round in question printed about 7/8" low of the group at 100y. It was loaded into my fowlers but still shot for group. Was virgin lapua brass, necked up to 6mm, 33.5gr XMR4350, EPS 106 bullet seated about -0.010.

 

[Coyotefurharvester]

Was it the only low poi rd, either foulers or for score rds?

 

[Fast14riot]

It was the farthest out of any group. It was just a coarse pressure ladder test for a new chambering that data for the powder im using doesn't exist. I haven't even looked for seating depth yet.

 

[old codger]

I have never had primers that look quite like those. The placement of the compound seem kind of sloppy.

 

[GotRDid]

Is that priming compound or sealant?

Likely sealant.

 

[Coyotefurharvester]

Here is 210M(on left) 210(R) these are 20yo.