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Rifles, Reloading, Optics, Equipment
Reloading
Need Help....Heavy Powder Residue On Case...
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<blockquote data-quote="IDelkhunter" data-source="post: 1117463" data-attributes="member: 43404"><p>Thanks for the continued responses. I appreciate the help and have only been doing precision hand loading for about 2 years now, so I apologize in advance if I get some of the terminology wrong. Maybe some additional information will help clarify what I seeing:</p><p></p><p>1. I'm using Redding S Bushing FL Dies - in order to determine which bushing to use, I size a case a with a bushing I know to be .002-.003 small and seat a bullet and then measure the neck. I then subtract .002" and use that bushing. In this instance, with this lot of brass, I was using a .311 Bushing, which means my seated neck diameter was .313. Measurements after firing were showing .316-.317".</p><p></p><p>2. I always headspace fire formed brass off the shoulder .002", even with belted cartridges....so I'm doing what you suggest (ignore the belt). Taking measurements on the virgin cases after firing them, I'm seeing about 40% that grew .008-.010" and 60% that grew .015-.017". This would indicate to me that the case is not fully expanding to the chamber and completely sealing off. Am I understanding this correctly?</p><p></p><p>So, if I'm understanding this correctly, seating the bullet long could cause it to exit the case early before the brass has sealed off the chamber, allowing gases and soot to surround the entire case. Correct? So, seating the bullet deeper should assist in a more fully fire formed case?</p></blockquote><p></p>
[QUOTE="IDelkhunter, post: 1117463, member: 43404"] Thanks for the continued responses. I appreciate the help and have only been doing precision hand loading for about 2 years now, so I apologize in advance if I get some of the terminology wrong. Maybe some additional information will help clarify what I seeing: 1. I'm using Redding S Bushing FL Dies - in order to determine which bushing to use, I size a case a with a bushing I know to be .002-.003 small and seat a bullet and then measure the neck. I then subtract .002" and use that bushing. In this instance, with this lot of brass, I was using a .311 Bushing, which means my seated neck diameter was .313. Measurements after firing were showing .316-.317". 2. I always headspace fire formed brass off the shoulder .002", even with belted cartridges....so I'm doing what you suggest (ignore the belt). Taking measurements on the virgin cases after firing them, I'm seeing about 40% that grew .008-.010" and 60% that grew .015-.017". This would indicate to me that the case is not fully expanding to the chamber and completely sealing off. Am I understanding this correctly? So, if I'm understanding this correctly, seating the bullet long could cause it to exit the case early before the brass has sealed off the chamber, allowing gases and soot to surround the entire case. Correct? So, seating the bullet deeper should assist in a more fully fire formed case? [/QUOTE]
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Reloading
Need Help....Heavy Powder Residue On Case...
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