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Rifles, Reloading, Optics, Equipment
Reloading
.280 Ackley and 150grn Swift Scirocco II
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<blockquote data-quote="varmintH8R" data-source="post: 761867" data-attributes="member: 39801"><p>I have a Cooper M52 in 280AI that I am working up a load for. Here is where I stand:</p><p></p><p>I have the same mag length constraint you have. I actually filled the inside of the mag catch notch in the magazine with epoxy as rounds were sticking in it nose-first. It actually worked pretty slick. I still can't get to the lands with long bullets. . . </p><p></p><p>I have worked up loads using 160ABs and 160 TSXs. Both in front of 57gr H4831SC. No pressure signs, and there will be room to increase. The ABs were at max mag length leaving them 47 thou off the lands. The TSXs could be seated to the lands, but my experience is that they like to be at least 30 thou off so that is where I started.</p><p></p><p>I only loaded 10 of each as this was an initial work-up. I fired 3 shot groups only and got very good results. My worst group was 0.64" with the TSXs, but both projectiles averaged just under 0.5" across 3 groups each.</p><p></p><p>So, my initial concerns about loading right up to the lands proved to be unnecessary . . . I was even more pleased as my fireform loads SUCKED for accuracy.</p></blockquote><p></p>
[QUOTE="varmintH8R, post: 761867, member: 39801"] I have a Cooper M52 in 280AI that I am working up a load for. Here is where I stand: I have the same mag length constraint you have. I actually filled the inside of the mag catch notch in the magazine with epoxy as rounds were sticking in it nose-first. It actually worked pretty slick. I still can't get to the lands with long bullets. . . I have worked up loads using 160ABs and 160 TSXs. Both in front of 57gr H4831SC. No pressure signs, and there will be room to increase. The ABs were at max mag length leaving them 47 thou off the lands. The TSXs could be seated to the lands, but my experience is that they like to be at least 30 thou off so that is where I started. I only loaded 10 of each as this was an initial work-up. I fired 3 shot groups only and got very good results. My worst group was 0.64" with the TSXs, but both projectiles averaged just under 0.5" across 3 groups each. So, my initial concerns about loading right up to the lands proved to be unnecessary . . . I was even more pleased as my fireform loads SUCKED for accuracy. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.280 Ackley and 150grn Swift Scirocco II
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