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Rifles, Reloading, Optics, Equipment
Reloading
0.03" growth after first fire (264WM WW Brass)
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<blockquote data-quote="eschafer" data-source="post: 2045188" data-attributes="member: 85764"><p>This here above, explains it perfectly... I only wish I heard it explained this way when I started to reload.... The arguments online about Belted Magnums and Headspace can be confusing and incomplete.....</p><p></p><p>Because the case is headspaced on the belt for the first firing, there isn't much space for the case to stretch backward toward the bolt... The bolt stops excessive stretch. (This assumes your chamber is head-spaced correctly).... Rather, the case gets FORMED forward in the chamber shoulder area with minimal stretch... The stretch is minimal because the case is free to FORM with little to stop it.... You'll see a little loss of neck length lost to the FORMING action..... </p><p></p><p>I have two 50 piece bags of virgin Belted Mag (.338 Win Mag) brass yet to be reloaded... Winchester and Hornady... 0.022"and 0.016" short from base to shoulder compared to my chamber, respectively.... For the longest time I was reluctant to reload them for fear of case head separation... I've since realized that these virgin cases are no different than the brass from factory rounds that I've been reloading to date, and presently at 5 reloads... Soon I'll take the plunge without anymore fear and reload the Winchester and or Hornady cases... I'll just continue to set my sizing die to only bump the shoulder 0.001"- 0.002"" short of my fired cases.....</p></blockquote><p></p>
[QUOTE="eschafer, post: 2045188, member: 85764"] This here above, explains it perfectly... I only wish I heard it explained this way when I started to reload.... The arguments online about Belted Magnums and Headspace can be confusing and incomplete..... Because the case is headspaced on the belt for the first firing, there isn't much space for the case to stretch backward toward the bolt... The bolt stops excessive stretch. (This assumes your chamber is head-spaced correctly).... Rather, the case gets FORMED forward in the chamber shoulder area with minimal stretch... The stretch is minimal because the case is free to FORM with little to stop it.... You'll see a little loss of neck length lost to the FORMING action..... I have two 50 piece bags of virgin Belted Mag (.338 Win Mag) brass yet to be reloaded... Winchester and Hornady... 0.022"and 0.016" short from base to shoulder compared to my chamber, respectively.... For the longest time I was reluctant to reload them for fear of case head separation... I've since realized that these virgin cases are no different than the brass from factory rounds that I've been reloading to date, and presently at 5 reloads... Soon I'll take the plunge without anymore fear and reload the Winchester and or Hornady cases... I'll just continue to set my sizing die to only bump the shoulder 0.001"- 0.002"" short of my fired cases..... [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
0.03" growth after first fire (264WM WW Brass)
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