Its seems to be more cosmetic that anything, but I want to be sure. The lower part seems to only be about .004" thinner than the upper. I dont know if my resizing die is kaput or I need more lube, or what. This is once-fired BHA match brass
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Is this acceptable?
- Thread starter InTheWeeds
- Start date
Re: Is this acceptable?
Looks like scrap to me..... I keep a nice 5 gallon bucket next to my reloading table for cases just like that.
Looks like scrap to me..... I keep a nice 5 gallon bucket next to my reloading table for cases just like that.
Re: Is this acceptable?
Well, the problem is it does it to all my brass that get run through this die. Should I send the die in to be replaced or am I doing something wrong?
Well, the problem is it does it to all my brass that get run through this die. Should I send the die in to be replaced or am I doing something wrong?
Re: Is this acceptable?
I dont know. I suppose I should get one.
Measurement are all coming in pretty consistently at .468" above the rim and .455" below the shoulder
I dont know. I suppose I should get one.
Measurement are all coming in pretty consistently at .468" above the rim and .455" below the shoulder
Re: Is this acceptable?
Sir,
I do not think it is a problem at all. I suspect you are shooting it in a slightly oversized chamber. What you are seeing is the expansion of the thin part of the case and lack of expansion of the stronger case head. I think you are shooting in a semi auto or factory chamber. Not a concern, I think. If it is a problem, it is with the chamber, not the case.
Sir,
I do not think it is a problem at all. I suspect you are shooting it in a slightly oversized chamber. What you are seeing is the expansion of the thin part of the case and lack of expansion of the stronger case head. I think you are shooting in a semi auto or factory chamber. Not a concern, I think. If it is a problem, it is with the chamber, not the case.
Re: Is this acceptable?
run a bent paper clip down the inside to see/feel if it has a ring.and if the tip of a paper clip catches the ring then toss it.or you can cut that one piece of brass with a tubeing cutter and take a look.wasteing one piece of brass is better than getting hurt.
run a bent paper clip down the inside to see/feel if it has a ring.and if the tip of a paper clip catches the ring then toss it.or you can cut that one piece of brass with a tubeing cutter and take a look.wasteing one piece of brass is better than getting hurt.
Re: Is this acceptable?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: In da weeds</div><div class="ubbcode-body">I dont know. I suppose I should get one.
</div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: In da weeds</div><div class="ubbcode-body">I dont know. I suppose I should get one.
</div></div>
Re: Is this acceptable?
Can you post a pic of a case before it's resized? That way we can tell if it's happening in the chamber or in the die.
Can you post a pic of a case before it's resized? That way we can tell if it's happening in the chamber or in the die.
Re: Is this acceptable?
Sloppy factory chamber + standard FL die = what you have
No problems really unless the primer pockets get loose or the sized case won't chamber.
JB
Sloppy factory chamber + standard FL die = what you have
No problems really unless the primer pockets get loose or the sized case won't chamber.
JB
Re: Is this acceptable?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: In da weeds</div><div class="ubbcode-body">Its seems to be more cosmetic that anything, but I want to be sure. The lower part seems to only be about .004" thinner than the upper. I dont know if my resizing die is kaput or I need more lube, or what. This is once-fired BHA match brass
</div></div>
mine looks the same, i reload 'em 4 times, the 5th shot i toss 'em. haven't had a problem yet.
not saying that it's the same problem or you are GTG, just that it looks familiar with mine. may be two completely differnt things.
the paperclip thing works, as does a hairpin. i like the hairpin better as its flatter and will pick up any case seperation easier. just feel for it lightly. any type of resistance, toss the case.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: In da weeds</div><div class="ubbcode-body">Its seems to be more cosmetic that anything, but I want to be sure. The lower part seems to only be about .004" thinner than the upper. I dont know if my resizing die is kaput or I need more lube, or what. This is once-fired BHA match brass
mine looks the same, i reload 'em 4 times, the 5th shot i toss 'em. haven't had a problem yet.
not saying that it's the same problem or you are GTG, just that it looks familiar with mine. may be two completely differnt things.
the paperclip thing works, as does a hairpin. i like the hairpin better as its flatter and will pick up any case seperation easier. just feel for it lightly. any type of resistance, toss the case.
Re: Is this acceptable?
http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=1504917#Post1504917
See this post and it will explain more what is happening.
Your fired cases will most likely measure .472 or larger. It looks like a commercial case so it started life at .465. If your sizer is taking it to .468 hold on to it as this is all you need.
measure new cases, fired cases and resized cases and see what you have.
http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=1504917#Post1504917
See this post and it will explain more what is happening.
Your fired cases will most likely measure .472 or larger. It looks like a commercial case so it started life at .465. If your sizer is taking it to .468 hold on to it as this is all you need.
measure new cases, fired cases and resized cases and see what you have.
Re: Is this acceptable?
It's definitely happening when its ran through the die. I didnt measure it pre-resizing. They are being fired in a factory AR30 chamber. I'll cut one open and inspect.
Thanks
It's definitely happening when its ran through the die. I didnt measure it pre-resizing. They are being fired in a factory AR30 chamber. I'll cut one open and inspect.
Thanks
Re: Is this acceptable?
You are aware the case is some .006" smaller in diameter than the chamber, are you not? It has to expand to seal the chamber, right?
You are aware the case is some .006" smaller in diameter than the chamber, are you not? It has to expand to seal the chamber, right?
Re: Is this acceptable?
Well I cut that same case open, and it shows no sign of excessive pressure or premature deterioration, so Im guessing its just normal. I know the case expands in the chamber, which is why we use re-sizing dies. I was just curious why its making this mark where its at and why the entire case is not resized down to the rim
Well I cut that same case open, and it shows no sign of excessive pressure or premature deterioration, so Im guessing its just normal. I know the case expands in the chamber, which is why we use re-sizing dies. I was just curious why its making this mark where its at and why the entire case is not resized down to the rim
Re: Is this acceptable?
Because if the case were sized down to original dimensions it would not last very long.
Because if the case were sized down to original dimensions it would not last very long.
Re: Is this acceptable?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jb1000br</div><div class="ubbcode-body">Sloppy factory chamber + standard FL die = what you have
No problems really unless the primer pockets get loose or the sized case won't chamber.
JB </div></div>
agreed
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jb1000br</div><div class="ubbcode-body">Sloppy factory chamber + standard FL die = what you have
No problems really unless the primer pockets get loose or the sized case won't chamber.
JB </div></div>
agreed
Re: Is this acceptable?
I like useing the RCBS case master http://www.midwayusa.com/viewproduct/?productnumber=310955
With the tip on the probe, you can feel a ring building up and you can also measure the case thickness and detect thinning before a ring develops. Works great.
myerfire
I like useing the RCBS case master http://www.midwayusa.com/viewproduct/?productnumber=310955
With the tip on the probe, you can feel a ring building up and you can also measure the case thickness and detect thinning before a ring develops. Works great.
myerfire
Re: Is this acceptable?
All the cases comming out of my M4 VNC look like that (new factory ammo and my reloads.) But, be a bit careful and use the paper-clip trick to see if there is any thinning down near the web.
What you are seeing is the product of high pressure (not too high just high) and a loose factory chamber.
My body die will squish this back in (about 66% of it anyway) but it comes right back out on the next firing.
I have gotten more than 25 reloads on cases with these kinds of outdentations.
All the cases comming out of my M4 VNC look like that (new factory ammo and my reloads.) But, be a bit careful and use the paper-clip trick to see if there is any thinning down near the web.
What you are seeing is the product of high pressure (not too high just high) and a loose factory chamber.
My body die will squish this back in (about 66% of it anyway) but it comes right back out on the next firing.
I have gotten more than 25 reloads on cases with these kinds of outdentations.
Re: Is this acceptable?
I would like to add that IMO it is not worse after sizing. I think that you notice it more due to being polished by the die and showing up more. The die will not touch the lower smaller part so the line is more prominate. If you mike it, you will see the case should be larger above the line than post sizing.
RTH
I would like to add that IMO it is not worse after sizing. I think that you notice it more due to being polished by the die and showing up more. The die will not touch the lower smaller part so the line is more prominate. If you mike it, you will see the case should be larger above the line than post sizing.
RTH
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