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Rifles, Reloading, Optics, Equipment
Reloading
Headspace gauge/resizing die question
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<blockquote data-quote="cornchuck" data-source="post: 472595" data-attributes="member: 20220"><p>I have been reloading my own ammo for about 6 years now. I was taught that when setting up the full length sizing die bring the ram up with shell holder to full stroke. Also having a fired cartridge of that caliber I am reloading in the shell holder, thread the die down until it just kisses the shell. Lock down the die.</p><p> </p><p>I purchased some Precision Mics from RCBS that contains the headspace gauge. I never really paid to much attention to this gauges until recently when I was reading how to set up resizing dies and I started to play with them.</p><p> </p><p>I was reloading for my 243 win when I got to thinking about the resizing die. So I took a look at what was going on. According to the instructions with the gauge, a 243 gauge is set at zero for a measurment of 1.6300 inches. When I put a fired unprimed cartridge in the gauge it says that it is between .001 to .0025 under the minimum length. When I run it through the resizing die, the cartridge grows. I measured the case before and after the die and it grows about .002 to .003 inches in length. </p><p> </p><p>I thought the shoulder would be pushed back. But the case gets longer. </p><p> </p><p>Is there something wrong with what I am doing? Do I need to just start over with the resizing die?</p><p> </p><p>Jason</p></blockquote><p></p>
[QUOTE="cornchuck, post: 472595, member: 20220"] I have been reloading my own ammo for about 6 years now. I was taught that when setting up the full length sizing die bring the ram up with shell holder to full stroke. Also having a fired cartridge of that caliber I am reloading in the shell holder, thread the die down until it just kisses the shell. Lock down the die. I purchased some Precision Mics from RCBS that contains the headspace gauge. I never really paid to much attention to this gauges until recently when I was reading how to set up resizing dies and I started to play with them. I was reloading for my 243 win when I got to thinking about the resizing die. So I took a look at what was going on. According to the instructions with the gauge, a 243 gauge is set at zero for a measurment of 1.6300 inches. When I put a fired unprimed cartridge in the gauge it says that it is between .001 to .0025 under the minimum length. When I run it through the resizing die, the cartridge grows. I measured the case before and after the die and it grows about .002 to .003 inches in length. I thought the shoulder would be pushed back. But the case gets longer. Is there something wrong with what I am doing? Do I need to just start over with the resizing die? Jason [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Headspace gauge/resizing die question
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