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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM from New 7mm RUM Nosler Brass
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<blockquote data-quote="Dean2" data-source="post: 2650679" data-attributes="member: 26077"><p>Try chambering the 7 RUM brass in your rifle, my bet is it will fit no problem. Even if the new brass is long enough in the shoulder to not chamber, sizing it will solve that problem. Adjust your FL die a bit at a time till the case will just chamber, do this step without the expander button in place. Once you have the neck shoulder junction right put the expander ball back in. Run it through your 300 Rum FL sizing die, re-test chamber fit, then load and shoot it. It will work just fine. You can move rbrass a long ways and do no harm. I size 460 Bee brass down to 338-378. That 460 brass was originally made from 378 brass necked up to 460, but since I don't have a 460 anymore figured I would neck it back down to feed the 338-378 I just had built. That is way more brass movement than necking up from .284 to .306. Just make sure you lube inside the necks along with the outside of the case when you run the expander ball in.</p><p></p><p>460 to 338-378</p><p></p><p>[ATTACH=full]405714[/ATTACH]</p></blockquote><p></p>
[QUOTE="Dean2, post: 2650679, member: 26077"] Try chambering the 7 RUM brass in your rifle, my bet is it will fit no problem. Even if the new brass is long enough in the shoulder to not chamber, sizing it will solve that problem. Adjust your FL die a bit at a time till the case will just chamber, do this step without the expander button in place. Once you have the neck shoulder junction right put the expander ball back in. Run it through your 300 Rum FL sizing die, re-test chamber fit, then load and shoot it. It will work just fine. You can move rbrass a long ways and do no harm. I size 460 Bee brass down to 338-378. That 460 brass was originally made from 378 brass necked up to 460, but since I don't have a 460 anymore figured I would neck it back down to feed the 338-378 I just had built. That is way more brass movement than necking up from .284 to .306. Just make sure you lube inside the necks along with the outside of the case when you run the expander ball in. 460 to 338-378 [ATTACH type="full" alt="1667049869523.png"]405714[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM from New 7mm RUM Nosler Brass
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