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Rifles, Reloading, Optics, Equipment
Gunsmithing
Case Seperation I thought.
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<blockquote data-quote="Muddyboots" data-source="post: 1618023" data-attributes="member: 63925"><p>Just a couple of thoughts looking at the pic which can be hard to tell if what you are looking at is visually correct. </p><ol> <li data-xf-list-type="ol">Highly recommend a gunsmith to not only visually inspect but run whatever nondestructive testing he can do to validate the structural integrity of the rifle going forward. This was clearly a extremely high pressure chamber issue that can serious deform a rifle in so many different ways that visually cannot be easily seen without right tools and or experience to evaluate completely. It is worth the money to prevent a bolt coming back into your face at a later date.</li> <li data-xf-list-type="ol">Gunsmith can probably salvage the bolt with the least amount of possible damage in removing the brass.<br /> </li> <li data-xf-list-type="ol">Just curious, the mouth of the brass doesn't looked chamfered which when seating a bullet can cause neck issues thus chamber pressure issues. Really hard to tell from the pic but worth mentioning. <br /> </li> <li data-xf-list-type="ol">Assume whatever loads you were using is ALL defective and tear down and inspect like others have recommended.</li> <li data-xf-list-type="ol">Verify the load data and the powder used. Was the load data from a manual? Was the powder load data for the bullet weight used? Did you have more than one powder on your bench at the time of loading? Did you use too slow of a powder and started too low in the load development? Too high in the load development? It can happen easily. <br /> </li> <li data-xf-list-type="ol">Verify the scale using calibration weights and reweigh the loads you recover. I am also curious if this was too light of a powder charge and this was a mild detonation type reaction. Normally they can be very destructive and catastrophic but if the planets lined up could it cause this? Sample explanation of Detonation - "One such theory postulates that a small powder charge in a mostly empty case can produce reinforcing shock waves inside the case. Another theory claims that the ignition of a small charge of very loosely packed powder granules can result in more or less simultaneous, rapid burning of the charge, producing excessive pressure. Loads less than the minimum loads listed in published data should be avoided, as should any ballistic "experimenting" with slow powders for which reduced load data is not available."</li> <li data-xf-list-type="ol">A bullet that is seated too short can seriously spike pressures as well.</li> <li data-xf-list-type="ol">Temperature of the loads can adversely affect the pressure. Loads good in cooler weather can be catastrophic in hot summer. Loads in the sun can heat up and spike pressure.</li> </ol></blockquote><p></p>
[QUOTE="Muddyboots, post: 1618023, member: 63925"] Just a couple of thoughts looking at the pic which can be hard to tell if what you are looking at is visually correct. [LIST=1] [*]Highly recommend a gunsmith to not only visually inspect but run whatever nondestructive testing he can do to validate the structural integrity of the rifle going forward. This was clearly a extremely high pressure chamber issue that can serious deform a rifle in so many different ways that visually cannot be easily seen without right tools and or experience to evaluate completely. It is worth the money to prevent a bolt coming back into your face at a later date. [*]Gunsmith can probably salvage the bolt with the least amount of possible damage in removing the brass. [*]Just curious, the mouth of the brass doesn't looked chamfered which when seating a bullet can cause neck issues thus chamber pressure issues. Really hard to tell from the pic but worth mentioning. [*]Assume whatever loads you were using is ALL defective and tear down and inspect like others have recommended. [*]Verify the load data and the powder used. Was the load data from a manual? Was the powder load data for the bullet weight used? Did you have more than one powder on your bench at the time of loading? Did you use too slow of a powder and started too low in the load development? Too high in the load development? It can happen easily. [*]Verify the scale using calibration weights and reweigh the loads you recover. I am also curious if this was too light of a powder charge and this was a mild detonation type reaction. Normally they can be very destructive and catastrophic but if the planets lined up could it cause this? Sample explanation of Detonation - "One such theory postulates that a small powder charge in a mostly empty case can produce reinforcing shock waves inside the case. Another theory claims that the ignition of a small charge of very loosely packed powder granules can result in more or less simultaneous, rapid burning of the charge, producing excessive pressure. Loads less than the minimum loads listed in published data should be avoided, as should any ballistic "experimenting" with slow powders for which reduced load data is not available." [*]A bullet that is seated too short can seriously spike pressures as well. [*]Temperature of the loads can adversely affect the pressure. Loads good in cooler weather can be catastrophic in hot summer. Loads in the sun can heat up and spike pressure. [/LIST] [/QUOTE]
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Case Seperation I thought.
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