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Rifles, Reloading, Optics, Equipment
Reloading
Headspace 10-round sample
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<blockquote data-quote="bigedp51" data-source="post: 1421390" data-attributes="member: 28965"><p>I prefer the Hornady cartridge case headspace gauge over the RCBS Precision Mic.</p><p></p><p>1. You can spin the case with the Hornady gauge and center the case to get accurate readings.</p><p>2. With the Hornady gauge you do not have to buy a separate gauge for each cartridge.</p><p></p><p>Bottom line to Chas1, buy the Hornady gauge and start using your Wilson type case gauges for pen holders and paper weights. Then measure your new cases and fired cases and see how much shorter the new unfired cases are. Then check each full length resized case for shoulder location uniformity. Meaning brass spring back after sizing.</p><p></p><p>Then pause at the top of the ram stroke for 4 or 5 seconds with each case that is resized. Pausing will reduce brass spring back and make the shoulder location more uniform.</p><p></p><p>I never neck size my cases and fire them mutable times to get shoulder location. A new case has soft annealed brass in the neck and shoulder area. Meaning measuring a new case that was fired with close to maximum load is close enough to figure shoulder bump. If you measured a older case that was fired many times and has not been annealed you would have more brass spring back.</p><p></p><p>Plus when you full length resize the case can be resized and made longer than the chamber. Meaning starting with the die not touching the shell holder and working downward and chambering the sized case you can go by feel when closing the bolt. And keep adjust the die downward until the case chambers freely.</p><p></p><p><img src="https://i.imgur.com/wm05ArY.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="bigedp51, post: 1421390, member: 28965"] I prefer the Hornady cartridge case headspace gauge over the RCBS Precision Mic. 1. You can spin the case with the Hornady gauge and center the case to get accurate readings. 2. With the Hornady gauge you do not have to buy a separate gauge for each cartridge. Bottom line to Chas1, buy the Hornady gauge and start using your Wilson type case gauges for pen holders and paper weights. Then measure your new cases and fired cases and see how much shorter the new unfired cases are. Then check each full length resized case for shoulder location uniformity. Meaning brass spring back after sizing. Then pause at the top of the ram stroke for 4 or 5 seconds with each case that is resized. Pausing will reduce brass spring back and make the shoulder location more uniform. I never neck size my cases and fire them mutable times to get shoulder location. A new case has soft annealed brass in the neck and shoulder area. Meaning measuring a new case that was fired with close to maximum load is close enough to figure shoulder bump. If you measured a older case that was fired many times and has not been annealed you would have more brass spring back. Plus when you full length resize the case can be resized and made longer than the chamber. Meaning starting with the die not touching the shell holder and working downward and chambering the sized case you can go by feel when closing the bolt. And keep adjust the die downward until the case chambers freely. [img]https://i.imgur.com/wm05ArY.gif[/img] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Headspace 10-round sample
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