Cartridge exploded in chamber

That case shows signs of a very High pressure load. In most cases, this is because of using the wrong powder.
However, if you are sure you were loading the correct powder, this was a big overload, more than 2 grains, to be sure.

There is a possibility that the powder "bridged" in your funnel, undercharging one load, and then dropped the
extra into the next load. N133 is quite fine, and you may not have noticed the fuller case. Dave.
 
yomomma said:
Sounds like a loose primer pocket
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On new brass? Appears to be a wildly overpressure load. Not quite pistol powder but perhaps the wrong rifle powder or wayyy too much of his regular stuff. I don't have any experience with VV rifle powders so I don't know what sort of fill he would get.
 
Eagleye said:
That case shows signs of a very High pressure load. In most cases, this is because of using the wrong powder.
However, if you are sure you were loading the correct powder, this was a big overload, more than 2 grains, to be sure.

There is a possibility that the powder "bridged" in your funnel, undercharging one load, and then dropped the
extra into the next load. N133 is quite fine, and you may not have noticed the fuller case. Dave.
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Ya I wouldn't of been cognizant of the fuller case because I'm used to varget,I'm speculating on 2+ but It could well of been more,it calls for 22.9 as max i was loading 22.1 it could of been 25 gr I have no idea.but the fact I wasn't up to snuff from 2nd vaccine shot I shouldn't of reloaded,but only did 2 to see velocity(batteries died a min later any how on the chrono so wasn't even going to fire it)and then shoot the 22lr to get out of house.
 
I emailed gun guys in wpg waiting to hear back.going to get it checked before using ,i will try to find extractor spring though were I don't have to bye the kit for $90.
 
Oldly said:
Ya I wouldn't of been cognizant of the fuller case because I'm used to varget,I'm speculating on 2+ but It could well of been more,it calls for 22.9 as max i was loading 22.1 it could of been 25 gr I have no idea.but the fact I wasn't up to snuff from 2nd vaccine shot I shouldn't of reloaded,but only did 2 to see velocity(batteries died a min later any how on the chrono so wasn't even going to fire it)and then shoot the 22lr to get out of house.
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You should go see what 25gr looks like in the case. Is it possible to get that much powder in the case and seat the bullet without heavy compression?

I don't reload 223 and haven't used the powder you were using, but 2gr over what I load in my 7mm08 would be a heavily compressed load and you'd notice it while seating a bullet.
 
Three things:

1. Dismantle the remaining rounds loaded when that one was and weigh the loads and examine the powder - all 22.0+ grs and Viht 133?; and
2. There's not much info such as what bullet weight you were loading, but I don't think you can fit enough Viht 133 into a 223 case even with the heaviest bullets to overpressure like that appears. Do you own faster powders?; and
3. You don't explicitly state it, but is the primer pocket greatly expanded (as it appears)?
 
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B said:
On new brass? Appears to be a wildly overpressure load. Not quite pistol powder but perhaps the wrong rifle powder or wayyy too much of his regular stuff. I don't have any experience with VV rifle powders so I don't know what sort of fill he would get.
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Re-read the whole thread...missed the part about a notch out of the face of the chamber....I had assumed all what happened was the primer blew out....hmmmmm
 
yomomma said:
Re-read the whole thread...missed the part about a notch out of the face of the chamber....I had assumed all what happened was the primer blew out....hmmmmm
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I cant say definitely that it is notched out,when I feel with my finger I cant notice,but with my eyes I can.it could be just oxidation or something.but won't be reloading with a fan again lol.
 
I have seen what a case of very, very slow pistol powder will do when loaded into .223. I doubt that is the case here since his casehead wasn't literally vaporized.
 
Ganderite said:
25 GR WON'T CAUSE THAT PROBLEM. Is it a factory sealed can of 133?

It looks more like a case of pistol powder, or a faster powder than 133.
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That`s why I asked the OP if he was positive that it was 133, because I do not think that it is physically possible to get enough 133 into a 223 case to generate the obvious monster pressure that occurred. My bet is also wrong powder.
 
I just did a bit of experimenting, and depending on make, it is entirely possible to get 27/28 or even 29 grains of N133 in a 223 case,
without severe compression. One case with 28 grains, just came to the bottom of the shoulder. Dave.
 
Oldly said:
Ya I wouldn't of been cognizant of the fuller case because I'm used to varget,I'm speculating on 2+ but It could well of been more,it calls for 22.9 as max i was loading 22.1 it could of been 25 gr I have no idea.but the fact I wasn't up to snuff from 2nd vaccine shot I shouldn't of reloaded,but only did 2 to see velocity(batteries died a min later any how on the chrono so wasn't even going to fire it)and then shoot the 22lr to get out of house.
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Looking at Nosler reloading data for 50-53 gr bullets it shows a max load of 25gr of N133 while it shows 26gr of Varget.
Nosler case capacity is 27.5gr of water so these are compressed loads.
There is no way you can fit enough N133 in that case to cause such an over pressure.

Was this a bolt action or semi-auto?
I have a hard time seeing this happening in a bolt action with that powder
What was the bullet being used?
 
thump_rrr said:
Looking at Nosler reloading data for 50-53 gr bullets it shows a max load of 25gr of N133 while it shows 26gr of Varget.
Nosler case capacity is 27.5gr of water so these are compressed loads.
There is no way you can fit enough N133 in that case to cause such an over pressure.

Was this a bolt action or semi-auto?
I have a hard time seeing this happening in a bolt action with that powder
What was the bullet being used?
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Exactly what I was thinking, in addition Nosler`s data shows 25.0 gr. having a L.D. of 106% (overflowing).
 
Bad Bob said:
Exactly what I was thinking, in addition Nosler`s data shows 25.0 gr. having a L.D. of 106% (overflowing).
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I think that you will find that Nosler's case volume data is based on the volume to the base of the seated bullets. They list different volumes for the same cases, for different bullets, with a Over All Cartridge Length (O.A.C.L.) given. So, I suspect that their L.D. (Loading Density" is based from that - to the base of the bullet seated in the case to the length they specify - not to the brim of the case mouth? Therefore, I think a L.D. of 106% means the loose powder is at 106% of the volume to where the bullet base will be, and will therefore be compressed when that bullet is seated.
 
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