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Rifles, Reloading, Optics, Equipment
Reloading
Shoulder Bump Measurement Check
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<blockquote data-quote="Michael J. Spangler" data-source="post: 404988" data-attributes="member: 20314"><p>hey guys,</p><p></p><p>i was wondering how much headspace slop is normal? </p><p></p><p>i'm starting some more loads for the .330 rum. now that i have a few more measuring tools i wanted to go through all the steps to make sure i get the most out of my reloads.</p><p></p><p>i determined my seating depth with my hornady OAL gauge. so i figured i would move on to the next step in precision reloading ; )</p><p></p><p>now i've been reading in to my shoulder bump vs neck sizing. the last cases were neck sized, but the shoulder bump makes sense so i figured i would take some measurements.</p><p></p><p>using the 420 headspace bushing from hornady i measure a fire formed case and came up with a measurement of 2.464" then i measure a FL sized case and came up with a measurement of 2.458"</p><p></p><p>so there's only a .006" bump from fire formed to full length sized. is this a big difference?</p><p></p><p>does this seem right? this is all pretty new to me and i don't have much reference to what the norm is. thanks for the help guys.</p><p></p><p>by the time i figure this whole thing out i'll need a new barrel. **** 300 RUM</p></blockquote><p></p>
[QUOTE="Michael J. Spangler, post: 404988, member: 20314"] hey guys, i was wondering how much headspace slop is normal? i'm starting some more loads for the .330 rum. now that i have a few more measuring tools i wanted to go through all the steps to make sure i get the most out of my reloads. i determined my seating depth with my hornady OAL gauge. so i figured i would move on to the next step in precision reloading ; ) now i've been reading in to my shoulder bump vs neck sizing. the last cases were neck sized, but the shoulder bump makes sense so i figured i would take some measurements. using the 420 headspace bushing from hornady i measure a fire formed case and came up with a measurement of 2.464" then i measure a FL sized case and came up with a measurement of 2.458" so there's only a .006" bump from fire formed to full length sized. is this a big difference? does this seem right? this is all pretty new to me and i don't have much reference to what the norm is. thanks for the help guys. by the time i figure this whole thing out i'll need a new barrel. **** 300 RUM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Shoulder Bump Measurement Check
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