I did a dumb thing (dumb but not dangerous)

[FNSafari]

If it won't chamber, pull the bullets, and resize. And back your seater die out a turn or two!

Frank

or 10

 

[Webster]

I didn’t know it was happening. See previous post where I explained how it was the seating die that did this, so it wasn’t observable when I did my usual shoulder bump measurements.

The bullets sit straight. They should have plenty of jump due to mag length limits. My gut thinks the shoulder will press forward first before the neck releases the bullet, but with the .02”-ish of headspace I might need to false shoulder the neck.

David

Why do you think the head space is a problem. That's what you have with just about any FF. The only issue is you cannot jam the bullets to get the case head against the bolt face. I would shoot 1 and see how the case forms.

 

[dgeesaman]

Why do you think the head space is a problem. That's what you have with just about any FF. The only issue is you cannot jam the bullets to get the case head against the bolt face. I would shoot 1 and see how the case forms.

The entire shoulder is pushed back. The base to ogive is reduced by about .02”.

I’m picking up the rifle from my friend so I can check the headspace with masking tape on the base of the case. Maybe the outer edge of the shoulder is still undeformed enough to headspace and fire consistently. Then if it’s a go I’ll fire one and report back the results.

 

[dgeesaman]

So follow-up:
I tore down the rounds and got the rifle from my friend and chambered the bare brass - but it wouldn't chamber until I pushed back the shoulders a bit. Now this sounds crazy at first, since most of the shoulder collapsed in, but the very outer part of the shoulder rolled forward either in the seater or when I resized to bring in the body diameter near the shoulder.

I was then able to set the shoulder bump to gently squeeze the brass lengthwise in the chamber. This was great news because I could count on the brass being located perfectly in the chamber and getting the overall length correct. I fireformed them again using cheap bullets and a starting load for 280 Rem and got great results.

 

[6MMsteve]

I've had plenty of dumb shit to occur, people forget where they come from, crawled before walking, if they will chamber let them rip

 

[6MMsteve]

So follow-up:
I tore down the rounds and got the rifle from my friend and chambered the bare brass - but it wouldn't chamber until I pushed back the shoulders a bit. Now this sounds crazy at first, since most of the shoulder collapsed in, but the very outer part of the shoulder rolled forward either in the seater or when I resized to bring in the body diameter near the shoulder.

I was then able to set the shoulder bump to gently squeeze the brass lengthwise in the chamber. This was great news because I could count on the brass being located perfectly in the chamber and getting the overall length correct. I fireformed them again using cheap bullets and a starting load for 280 Rem and got great results.

you skinned the kitty