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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to blowup your rifle
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<blockquote data-quote="J E Custom" data-source="post: 1382585" data-attributes="member: 2736"><p>I had this happen once while fire forming one of my wildcats. The sound was exactly as you described. Having never heard it before, I stopped fire forming And went on to something else until I could get home and try to figure out what and why.</p><p></p><p>I went back to my loading notes and wrote down the load to compare with the load on the case card with the fire form loads to make sure I hadn't used the wrong load. Then I proceeded to pull the/a bullet from one of the loads to inspect everything and weigh the powder charge.</p><p></p><p>After everything checked out I knew that the fire form load I figured it was to low for the case capacity (119 grains of powder)even though the load was 106 grains behind a 250 grain bullet.</p><p></p><p>So I pulled all bullets and dumped the powder and started over with 108 Grains on some and up to 112 grains on the others with the intent to Look for the best fire form load and then use that Load from then on.</p><p></p><p>This was a new wildcat with zero load data and I had to start somewhere. 108 worked well but left the shoulder junctions less that sharp requiring one more fire forming to get Chamber dimensions.</p><p></p><p>The point is, even a 106 grain load can be a squib load based on the chamber volume, so you have to keep good records and pay attention</p><p>when firing any Load and don't make component changes with out reducing the load. I normally use the middle load for the parent cartridge for fire forming with good results and accuracy, but this was an unknown cartridge and had I not paid attention I could have made a mistake that would not be pleasant. The OP didn't get this chance but maybe others will when/if they hear this sound and quit before something happens.</p><p></p><p>Thanks for reminding me BG. Although I will never forget that sound, I don't want to hear it again. "EVER"</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1382585, member: 2736"] I had this happen once while fire forming one of my wildcats. The sound was exactly as you described. Having never heard it before, I stopped fire forming And went on to something else until I could get home and try to figure out what and why. I went back to my loading notes and wrote down the load to compare with the load on the case card with the fire form loads to make sure I hadn't used the wrong load. Then I proceeded to pull the/a bullet from one of the loads to inspect everything and weigh the powder charge. After everything checked out I knew that the fire form load I figured it was to low for the case capacity (119 grains of powder)even though the load was 106 grains behind a 250 grain bullet. So I pulled all bullets and dumped the powder and started over with 108 Grains on some and up to 112 grains on the others with the intent to Look for the best fire form load and then use that Load from then on. This was a new wildcat with zero load data and I had to start somewhere. 108 worked well but left the shoulder junctions less that sharp requiring one more fire forming to get Chamber dimensions. The point is, even a 106 grain load can be a squib load based on the chamber volume, so you have to keep good records and pay attention when firing any Load and don't make component changes with out reducing the load. I normally use the middle load for the parent cartridge for fire forming with good results and accuracy, but this was an unknown cartridge and had I not paid attention I could have made a mistake that would not be pleasant. The OP didn't get this chance but maybe others will when/if they hear this sound and quit before something happens. Thanks for reminding me BG. Although I will never forget that sound, I don't want to hear it again. "EVER" J E CUSTOM [/QUOTE]
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