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Rifles, Reloading, Optics, Equipment
Reloading
Reloads causing soot on brass/bolt
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<blockquote data-quote="MNbogboy" data-source="post: 1860630" data-attributes="member: 18849"><p>The FTF cartridges with the small dents in primers seem to indicate too short from base to shoulder. That might explain failure to fire and bolt closing easier than others. The loose fit on some and not others could be caused from state of anneal, amount of lube used in sizing, actual sizing technique or a combination of all three. Annealing nickel plated brass works fine. Switching to new brass will also help. </p><p>Checking the throat with a bore scope/camera will show any carbon build up or imperfection causing sealing problems. These carbon buildups will even cause regular pressure loads to "leak".</p><p>Trimming brass to minimum length will also add to the problem as well as improper outside neck turning. Thick, "hard" necks also don't seal well at low pressure.</p><p>Any or all of the above can be cause of poor neck seal. Add those to a light charge and sooting/leakage results along with exaggerated ES/SD. </p><p></p><p>A few things to look at.</p></blockquote><p></p>
[QUOTE="MNbogboy, post: 1860630, member: 18849"] The FTF cartridges with the small dents in primers seem to indicate too short from base to shoulder. That might explain failure to fire and bolt closing easier than others. The loose fit on some and not others could be caused from state of anneal, amount of lube used in sizing, actual sizing technique or a combination of all three. Annealing nickel plated brass works fine. Switching to new brass will also help. Checking the throat with a bore scope/camera will show any carbon build up or imperfection causing sealing problems. These carbon buildups will even cause regular pressure loads to "leak". Trimming brass to minimum length will also add to the problem as well as improper outside neck turning. Thick, "hard" necks also don't seal well at low pressure. Any or all of the above can be cause of poor neck seal. Add those to a light charge and sooting/leakage results along with exaggerated ES/SD. A few things to look at. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Reloads causing soot on brass/bolt
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