How hot?

How hot and safe would you call this?
Have laddered up to this point twice was going to go more till got better slap an sticky lift but I forgot till I was there and seen was same as before.

No sticky lift or extraction
1.5thou head expansion over new brass unformed, this case has been formed and fired twice now at that load.

Little man didn't want to let the go. .. :D
So people add you $1.50 interested to see that's all so don't be shy

http://img.tapatalk.com/d/13/07/28/yneqagyg.jpg
http://img.tapatalk.com/d/13/07/28/yby7u2u9.jpg

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Primer cratering, ejector marks. Possibly some leakage around the primer and 1.5 thou CHE? Not sure I entirely get the question.

It could settle on that load as the case has formed properly. If it chambers easily without sizing or trimming and shows no obvious signs on the third firing, she could be sweet. May not be in a few months tho.

What sort of extractor Abe?

SlopPy firing pin hole. Made in America?

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Attachment 12701
Looks similiar to a few of mine that i got in load developement so im also interested. I had no cratering or sticky bolt lift whatsoever, this was the only pressure sign.

Note my brass is a lot dirtier haha, should probably tumble them one of these days...

looks similar to mine and they arnt hot loads either.Winchester mod 70 action 260ai 6 to 7 firing.
Attachment 12702

Quote:

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Originally Posted by R93

Primer cratering, ejector marks. Possibly some leakage around the primer and 1.5 thou CHE? Not sure I entirely get the question.

It could settle on that load as the case has formed properly. If it chambers easily without sizing or trimming and shows no obvious signs on the third firing, she could be sweet. May not be in a few months tho.

What sort of extractor Abe?

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It's Remington 700 bolt are bit sloppy in the pin hole
Sako extractor I put in it as well not that flat tho is flattering off would only be gr or 2 away from sticky

Chambers easy as again, no gas leak just looks like it in the photo.
Here's a photo of one 6gr less. . ..
http://img.tapatalk.com/d/13/07/28/bu7age5y.jpg

Quote:

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Originally Posted by veitnamcam

SlopPy firing pin hole. Made in America?

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year mate 700

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Quote:

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Originally Posted by PerazziSC3

Attachment 12701
Looks similiar to a few of mine that i got in load developement so im also interested. I had no cratering or sticky bolt lift whatsoever, this was the only pressure sign.

Note my brass is a lot dirtier haha, should probably tumble them one of these days...

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Only since this is all new lol.

Little things are easy to get wee slaps when is right near the edge, moisture in chamber little hotter day, longer strings getting things hotter when they sit in there etc

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File a few thou off the firing pin!

my Remington does the cratering too.(on pretty much any load)
the edge of the primer is still round, not flat. the extractor mark could be from soft brass.
I also had factory superformance ammo put extractor marks on cases, but probabley not the bright.
I don't think its too hot, but the extractor marks suck. check the velocity isn't too high.
if it wont last five firings, maybe it is too hot.

but im fairly new to re-loading.

Were all the cases fired like that or just the odd one?

Quote:

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Originally Posted by outdoorlad

Were all the cases fired like that or just the odd one?

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That's only one mate, I need to ladder higher to get better signs an know this combos limits
An will see when I fire the other 5 loaded to this charge again an check speed to the 2 ladders I have done as well

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Originally Posted by Neckshot

looks similar to mine and they arnt hot loads either.Winchester mod 70 action 260ai 6 to 7 firing.
Attachment 12702

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:P Where is the RE off the REM gone :ORLY:

Neckshot, the head stamp is partially gone and the loads are not hot? You sure about that? Lapua brass to.

Mod 70 ejector. What primer neckshot? They do look pretty similar to mine around the same number of firings. The only time I have to trim or use the FL die is maybe on the 7th-8th firing.

We all know how hard it is to get lapua case head brass to leave ejector marks tho. That brass looks to only have the 1 ejector mark on it, so if it was fired 6-7 times maybe the fireform load did it?

Exactly

How many stamps out of say 50 shots is to many?

Going to go and shoot a case till it dies at that charge an measure on the way as well

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See ya in 3 shots then?:thumbsup:

Once I think I have settled on a load I test a case till it dies. Takes a wee while as I want the barrel cold for every shot.

Quote:

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Originally Posted by R93

See ya in 3 shots then?:thumbsup:

Once I think I have settled on a load I test a case till it dies. Takes a wee while as I want the barrel cold for every shot.

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You you have money on 5 shot life?

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Na! You know what your doing and you are smarter than me coz you speak fluent Swahili.:thumbsup: Hard to judge things like that without seeing first hand. It will be interesting.

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Originally Posted by R93

Na! You know what your doing and you are smarter than me coz you speak fluent Swahili.:thumbsup:

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hahahahaha

I get ejector stamps like that randomly when using Norma brass. No other pressure signs at all, every powder charge weighed, every loaded round measured for length to ogive... Mate has a 7mmRM that does the same with Norma brass :huh:

It is soft thats for sure.
Will be interesting how long my wsm brass will last, its on its 4th firing using rl17.
Nice and uniform tho and very well priced, cant see myself changing

I get same thing in my screamer as well little slap every now and then to most will when couple of gr off the top only needing small things to push it up.

I get 12 firings out my 6.5 300 with it before necks start to die but I toss it after 10 with most my easy brass since new is nice :D

Even after 10 firings brass etc cost is nothing

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I reckon you will get 8 from ya blaser mag brass using that load.

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Originally Posted by L.R

I reckon you will get 8 from ya blaser mag brass using that load.

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That case had 12 firings now gave it 10 them still holding primer but split the neck.. . . Body sized twice in that.
Speed dropped off a little to what I told you yesterday but only 40feet

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Quote:

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Originally Posted by tui_man2

That case had 12 firings now gave it 10 them still holding primer but split the neck.. . . Body sized twice in that.
Speed dropped off a little to what I told you yesterday but only 40feet

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That's pretty good going from Norma brass mate. Now go shove some 180's in the case and report back to me. It's looking to be a very promising chambering.

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Originally Posted by Neckshot

looks similar to mine and they arnt hot loads either.Winchester mod 70 action 260ai 6 to 7 firing.
Attachment 12702

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Loads not hot ??!!????

Dude, if that is what is happening to your brass your loads ARE way too hot. Lapua cases are generally harder/tougher than most other makes. (i.e. - good.)

Brass swell into the plunger ejector hole, then getting sheared off as you rotate the bolt face on the jammed case.

the primer 'cratering' is caused by the EXCESSIVE pressure pushing the firing pin tip back as the cartridge discharges, during peak pressure.

These are the main fixes for these conditions:

1. reduce your powder charge or neck tension, or take the bullet out of 'jam' condition.
2. Go to a custom action or bolt with a reduced diameter firing pin tip.
3. use primers with a harder 'cup'.
4. Increase the force of your bolts mainspring.
5. Norma brass is notoriously soft compared with other makes, reduce your loading intensity.
6. Go to a stiffer/bigger custom action that is better able to handle the higher pressures.
7. Reduce your loads. velocity for velocities sake is not always a good pursuit.
8. All of the above.


(9. ensure your medical/income protection insurance is paid up if you want to keep pushing the limits of a bit of brass that is the main think separating you from 60,000+ PSI of 'nasty'.........)

Quote:

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Originally Posted by L.R

We all know how hard it is to get lapua case head brass to leave ejector marks tho.

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Have definately done it during load development in my own 260 with Lapua .243 brass though. The load was fine if the barrel didn't get too hot and I dropped down as soon as i got a sticky bolt lift with it.

Quote:

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Originally Posted by L.R

That brass looks to only have the 1 ejector mark on it, so if it was fired 6-7 times maybe the fireform load did it?

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The fireforming comment is smart. When fireforming i always set the projectile so that when chambered it is hard into the lands. This forces the base of the case hard against the bolt. Maybe if this wasn't done you could get an ejector mark as the case expands in the chamber back toward the bolt face?

Quote:

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Originally Posted by tui_man2

That's only one mate, I need to ladder higher to get better signs an know this combos limits
An will see when I fire the other 5 loaded to this charge again an check speed to the 2 ladders I have done as well

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but is it getting a better MOA as you go higher?

Just shot through crony into bank. So in that rifle can't say.

Have done 3 sisters to it though 2 shot well with anything one was bit more picky from what I have been told

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If you have to ask,

More after others thoughts. . ..

I only slapped one case, pocket still tight after 12 firings on this 'soft' brass

I'm happy as with it and info coming back from others running them they are to.


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In these photos I see ejector marks which I would read as over 60,000psi too hot. Primer catering is only one and not that reliable means of a high pressure sign. Stick bolt and ejector marks to me means way over.

I get cratered primers and ejector marks on every Lapua case that goes through my LAR 8. I think it's more of a cycling issue, rather than over pressure. Powder burn is too slow. Frustrating as fuck how it beats the rim and head up though, makes priming a chore because they don't slide into the priming tool, gotta persuade them in, then pry them out with a flat head screw driver. I can tolerate it in that platform because it has different quirks to a bolt gun. In a bolt gun I would back off a little with those pressure signs.