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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need Some Help On This One......
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<blockquote data-quote="Warren Jensen" data-source="post: 27434" data-attributes="member: 21"><p>Can't be sure without measurements but what you are describing is the base of the bullet or the start of the boattail is clearing the case neck before the engraving seal is established. The gas pressure is blowing back and denting the shoulder before the case has completely explanded to seal the chamber. You probably are using long ogived, relatively shorter bearing surface bullets and have a very long throat. I saw this very thing in a factory chambered 7mm RUM Sendero. You can confirm by casting the chamber and/or using bullets with longer bearing surfaces.</p><p></p><p>Warren Jensen</p></blockquote><p></p>
[QUOTE="Warren Jensen, post: 27434, member: 21"] Can't be sure without measurements but what you are describing is the base of the bullet or the start of the boattail is clearing the case neck before the engraving seal is established. The gas pressure is blowing back and denting the shoulder before the case has completely explanded to seal the chamber. You probably are using long ogived, relatively shorter bearing surface bullets and have a very long throat. I saw this very thing in a factory chambered 7mm RUM Sendero. You can confirm by casting the chamber and/or using bullets with longer bearing surfaces. Warren Jensen [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need Some Help On This One......
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