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Rifles, Reloading, Optics, Equipment
Reloading
300 rum load development
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<blockquote data-quote="combatcurt" data-source="post: 1584851" data-attributes="member: 67770"><p>Just my .02$-</p><p>87 to 88 looks promising. My bet is your brass took quite a beating on the higher end. It may be worth it to anneal the whole lot before resizing. They will at least be consistent, and at the very worst, bring back some life to those higher charged ones. As far as having zero valuable data, I'm gonna say horse ****. There is more than someone apparently thinks. Although IMR claims this powder to be temperature insensitive, it will only be to a certain extent and the closer those velocities within a given range of charge weight, as well as point of impact, could very well indicate a very stable load throughout the seasons.</p><p></p><p>Another thought, and if only for science sake, I measure the web diameter of the brass after I reasize and also after I shoot it. I don't do this after load development because honestly, If I blow a few primers after I have a good working load, I chalk it up to being a RUM case (bit of laziness and lack of dedication ) and try not to kill any of the few brain cells I have remaining. This being said, the average of measurements taken throughout this, can sometimes squash any doubt about the lack of excessive pressure.</p><p></p><p>I have a 300 RUM and I full length size every single time. In my opinion, (Uh-oh, I hear the sound of urologist rulers coming out...) neck sizing has no advantage over full length sizing for hunting cartridges. I have built, shot and reloaded (with great success) many different cartridges that visit the upper extremities of brass comfort on a regular basis. Remember folks, before you feel the need for hemorrhoid doughnuts, this is from my experience. Reloading is almost as satisfying to me as cake is to Rosie O'Donnell.</p><p></p><p>As for your factory ammo leaving ejector marks, my experience has found thatt factory ammo left serious extractor marks on my wallet.</p><p></p><p>In all seriousness, take my words with a grain of salt- be kind to each other and keep the love for this amazing science alive!</p></blockquote><p></p>
[QUOTE="combatcurt, post: 1584851, member: 67770"] Just my .02$- 87 to 88 looks promising. My bet is your brass took quite a beating on the higher end. It may be worth it to anneal the whole lot before resizing. They will at least be consistent, and at the very worst, bring back some life to those higher charged ones. As far as having zero valuable data, I'm gonna say horse ****. There is more than someone apparently thinks. Although IMR claims this powder to be temperature insensitive, it will only be to a certain extent and the closer those velocities within a given range of charge weight, as well as point of impact, could very well indicate a very stable load throughout the seasons. Another thought, and if only for science sake, I measure the web diameter of the brass after I reasize and also after I shoot it. I don't do this after load development because honestly, If I blow a few primers after I have a good working load, I chalk it up to being a RUM case (bit of laziness and lack of dedication ) and try not to kill any of the few brain cells I have remaining. This being said, the average of measurements taken throughout this, can sometimes squash any doubt about the lack of excessive pressure. I have a 300 RUM and I full length size every single time. In my opinion, (Uh-oh, I hear the sound of urologist rulers coming out...) neck sizing has no advantage over full length sizing for hunting cartridges. I have built, shot and reloaded (with great success) many different cartridges that visit the upper extremities of brass comfort on a regular basis. Remember folks, before you feel the need for hemorrhoid doughnuts, this is from my experience. Reloading is almost as satisfying to me as cake is to Rosie O'Donnell. As for your factory ammo leaving ejector marks, my experience has found thatt factory ammo left serious extractor marks on my wallet. In all seriousness, take my words with a grain of salt- be kind to each other and keep the love for this amazing science alive! [/QUOTE]
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300 rum load development
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