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Rifles, Reloading, Optics, Equipment
Reloading
25-06 case head seperation?
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<blockquote data-quote="Bart B" data-source="post: 366998" data-attributes="member: 5302"><p>This thread's got some interesting and sometimes dangerous practices posted. Here's a dangerous one<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" />oing this usually ends up with a case way too short for safety and a guarantee that head separation is just around the corner.</p><p></p><p>Turning a die 1/4th turn changes its height about 18 thousandths. Die threads at 14 per inch have a bit over 71 thousandths between threads. Adjusting a die 1/4th turn at a time will easily get a full length sized case shoulder set back far enough to guarantee head separation really quick with rimless bottleneck cases. Don't change the die height more than 4 thousandths or 1/16th of a turn when searching for the right case headspace to safely and properly fit your chamber. There shouldn't be more than 5 thousandths headspace clearance on a loaded round.</p><p></p><p>Get a case headspace gage, such as an RCBS Precision Mic or Hornady gage. They'll measure your case headspace from head to shoulder so you can tell when your die's set to set fired case shoulders back no more than 2 thousandths. Best safety, accuracy and case life happens when this is done.</p></blockquote><p></p>
[QUOTE="Bart B, post: 366998, member: 5302"] This thread's got some interesting and sometimes dangerous practices posted. Here's a dangerous one:Doing this usually ends up with a case way too short for safety and a guarantee that head separation is just around the corner. Turning a die 1/4th turn changes its height about 18 thousandths. Die threads at 14 per inch have a bit over 71 thousandths between threads. Adjusting a die 1/4th turn at a time will easily get a full length sized case shoulder set back far enough to guarantee head separation really quick with rimless bottleneck cases. Don't change the die height more than 4 thousandths or 1/16th of a turn when searching for the right case headspace to safely and properly fit your chamber. There shouldn't be more than 5 thousandths headspace clearance on a loaded round. Get a case headspace gage, such as an RCBS Precision Mic or Hornady gage. They'll measure your case headspace from head to shoulder so you can tell when your die's set to set fired case shoulders back no more than 2 thousandths. Best safety, accuracy and case life happens when this is done. [/QUOTE]
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Reloading
25-06 case head seperation?
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