Primers backing out.

[Goose71]

I've got a issue of primers backing out. The load is not hot primers look normal. No cratering Brass are rem 308win with fed210 m. Cci 200 and rem 9.5 are loose going in. they are 1x fired I bought in classified section cause I couldn't get new or new loaded. Any thoughts

 

[jimbires]

sounds like your load is to light . try increasing the charge weight of the powder ,

 

[yankee outlaw]

how do you know they ways only 1x fired
a friend of mine ask me the same ? yesterday he is having the same problem with once fired fed brass

 

[nksmfamjp]

Most likely, the brass is from hot loads or oversized chambers. This will tell you for sure.

Swage Gage ® Large Primer Pocket Gauge

Swage Gage Large Primer Pocket Gauge

ballistictools.com

 

[Goose71]

I was thinking same. I'll suspend loading till I get new brass. I just needed insurance. I the word it was 1x.

 

[jimbires]

do you have a black ring around the fired primer ? that is a sure sign the pockets are loose , and leaking .


even loose pockets should not allow the primer to back out . usually a low pressure load causes this .

 

[Goose71]

No primer leaking

 

[sturner]

Deleted

 

[jimbires]

I got you a couple pics from a reloading book . this will explain it to you . Jim

 

[Dosh]

Lapua has excellent.308 Win brass.

 

[yankee outlaw]

lapua has excellent brass

 

[sturner]

I got lapua brass that's been fired 8 times
I anneal each time I fire them

 

[Mike Matteson]

Thanks for the info on ballistic tools. To add to this, I would say it sounds like high pressured cases to me. I wonder what the real story is on those cases. Were they purchase as once fired case from somebody else? I am a bad one for picking up brass in the field if I come across some. I wear house it for a rainy day.

 

[Mike Matteson]

I got lapua brass that's been fired 8 times
I anneal each time I fire them

But that's Lapua brass. I have gotten that many firing out other manufactures cases, but the primers pockets are starting to open up. Annealing the brass doesn't do anything for primers pockets, or I hope you are not annealing that area of the case.