Thread: Case pressure signs

I'd also be checking the headspace just to be sure.

Originally Posted by P38

I'd also be checking the headspace just to be sure.

Of course.

Sorry to hijack the thread ,,,all sorta on same topic
Right have checked head space from a fired case to where they had been sized too and can be improved to where they shoould be,,,,,the head scratcher is on a fired case i can wind the die out lots before i get a tiny bit of bolt resistance ,,,,to the point where it is only sizing three quarters of the way down the neck???and the shell holder is a long way off the seating die ,,,,headspace issue with the gun?? havnt had this before,,,,my tikkas with a tiny bit of bolt resistance to just none is about .001" to .002" bumped back from a fired case

Bushrash, it sounds as if your brass is not ready for a FL resize and you may still get away with just a neck size, you can continue neck sizing until unacceptable pressure is required to close the bolt on a loaded round, high bolt closing pressure wipes lube from the bolt locking lugs inducing galling.

Now to answer your question, once your brass has expanded enough to tighten bolt closure to unacceptable levels use that brass in your quest to find where your die height is sufficient enough to ease bolt closure to a slight 'snug feel' in the last half to quarter of closure.

Your neck bushing die will also allow you to select a neck tension that gives you best accuracy.

You can basicly neck size with a full length die. I can do that a couple of times before it needs actual bumping of the shoulder.
If its been sized down hard and not run hot it will still have some head space after firing.

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All starting to make sense Cheers 7mmsaum so without a neck sizing die ,,,i should be fl sizing the fire formed brass till it just touches the shoulder then wind up a touch?? ,,,as i said with my rifles this isnt an issue ,,,but just as important to have it right for this fella

Haha cheers VC just answered what i just posted

Originally Posted by scoped

Cut a section out and cleaned it up a little. Was impressed how defined the ridge is. Almost like someone has used a punch to do it.

This is lapua brass by the way. Fired in a Tikka t3 so would hope that its not a headspace problem. But yeah, more than likely hot loads!

That is a little strange.....are they all like that ?....should be easy to see/feel.

Do you have any of the same batch that are unfired or fired less ?

I agree with Greg. It is strange. And I reckon you may be oversizing? You can fix the problem by following the above advice on necksizing. Normally seperation or the onset of it, is evident further back.

How hot is hot, 48 grains of 2209. And yes i cleaned the case so it was easier to see

Originally Posted by scoped

How hot is hot, 48 grains of 2209. And yes i cleaned the case so it was easier to see

So what weight is the projectile?,not hot for 100grn but getting up there for 140

yep 140 berger vld hunting

Originally Posted by R93

I agree with Greg. It is strange. And I reckon you may be oversizing? You can fix the problem by following the above advice on necksizing. Normally seperation or the onset of it, is evident further back.

Some good advise and worth looking into.

How's it! I've got a tikka m595 .308. Made my first lot of handloads. Lapua brass, 155gr Berger vlds, 2206h powder 45 grains pumping out of barrel at 2845 fps. My brass has same rings down low. Must just be hot loads? Told brass was fired once. 2nd time ring appeared. Be interesting to see how my new brass goes. Ur not alone Scoped

Originally Posted by Gutshot

How's it! I've got a tikka m595 .308. Made my first lot of handloads. Lapua brass, 155gr Berger vlds, 2206h powder 45 grains pumping out of barrel at 2845 fps. My brass has same rings down low. Must just be hot loads? Told brass was fired once. 2nd time ring appeared. Be interesting to see how my new brass goes. Ur not alone Scoped

Sure the ring is not just where the die has sized to? The head won't/shouldn't get sized as it shouldn't expand. And that can leave a line

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