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Rifles, Reloading, Optics, Equipment
Reloading
Which Dies?
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<blockquote data-quote="vancewalker007" data-source="post: 1964261" data-attributes="member: 66917"><p>You can guess at bushing sizes by measuring factory ammo, but you really need to fire some rounds in your rifle before you can really narrow down sizes. To play this game you need to get a tube micrometer like the one in the link I added. I have used a very simple one for years. It's can measure into the 1/10000. This allows you to measure case neck thickness which is important in computing sizes for bushings. </p><p></p><p>Another bushing issue you should follow is to not squeeze a neck down more than 5/1000 in a sizing pass. I you only go 5/1000 or less at a pass you will make your case necks last much longer and at $2-$3 a case that's important. You won't know which intermediate bushing you need until you fire a round in your rifle. The outsidel measure of the necks on your fired cases will likely be somewhere around .343-.346, so your intermediate bushing will be .338-.341. On my old 300 WSM I used a .339 intermediate and a .336 final bushing using Nosler brass. </p><p></p><p><a href="https://www.amazon.com/dp/B01N9U1387/?tag=lrhmag19-20" target="_blank">https://www.amazon.com/dp/B01N9U1387/?tag=lrhmag19-20</a></p></blockquote><p></p>
[QUOTE="vancewalker007, post: 1964261, member: 66917"] You can guess at bushing sizes by measuring factory ammo, but you really need to fire some rounds in your rifle before you can really narrow down sizes. To play this game you need to get a tube micrometer like the one in the link I added. I have used a very simple one for years. It's can measure into the 1/10000. This allows you to measure case neck thickness which is important in computing sizes for bushings. Another bushing issue you should follow is to not squeeze a neck down more than 5/1000 in a sizing pass. I you only go 5/1000 or less at a pass you will make your case necks last much longer and at $2-$3 a case that's important. You won't know which intermediate bushing you need until you fire a round in your rifle. The outsidel measure of the necks on your fired cases will likely be somewhere around .343-.346, so your intermediate bushing will be .338-.341. On my old 300 WSM I used a .339 intermediate and a .336 final bushing using Nosler brass. [URL]https://www.amazon.com/dp/B01N9U1387/?tag=lrhmag19-20[/URL] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Which Dies?
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