Ammunition & Hand Loading > Cartridge and Shotshell reloading

Reloading 223rem and 5.56

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fortunateComa:
I'm reloading my 5.56 LC brass to 223rem charge and specs. 55 gr bullet, (win. with cannluer), 23.5 gr of H 335 powder, CCI #400 primers. After doing all the prep work on the cases they were all under 1.760, in length. After putting primers in and measuring acrossed the middle ie across the primer some now measure between 1.7650 and 1.7680
Are these safe to continue reloading for use in my xm15 carbine. Or do I need to trim these. If I need to trim, do I need to deprime these,  is it safe to deprime them? , or throw them away and chalk it up to rookie mistake. I used my cousin's hand crank trimmer don't know model or make set to 1.756 for length.
Any opinions would be greatly appreciated Thanks

Dan W:
Primers need to be seated below flush with the base.

The only way that primer insertion would make the brass longer is if the primers are protruding from the base, and that can cause a dangerous condition that can lead to a slam fire when closing the bolt.

Check all your primers to make sure they are below flush

SemperFiGuy:

--- Quote ---Primers need to be seated below flush with the base.
--- End quote ---

Roger that one.

Number of ways to check:

>Set cartridges on flat, firm table top, base down.  See if they rock back and forth just a little or a lot.

>Hold them up to the light, look across the flat of the cartridge base.  See if you see any amount of primer a-tall, then the primer is seated too high.

>Hold a steel straightedge across the flat of the cartridge base, including the "seated" primer. 

>Use a depth micrometer.

Whatever you do, please do not use your hand primer to re-set any high-seated primers to a newer, lower, proper depth.

Please don't.

You can do so, and it will work.

Just please don't.

sfg

tstuart34:
Just curious did you remove the crimp from the cases prior to priming?

Sent from my VS985 4G using Tapatalk

fortunateComa:
Yes they are not set properly.  So deprime and start over or throw away?
I'm not out anything if I throw them away, they are range pick ups.

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