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Rifles, Reloading, Optics, Equipment
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<blockquote data-quote="Tree Farmer" data-source="post: 2410710" data-attributes="member: 75473"><p>I'm trying to develop a load for a 280 AI. So far, so good. Here's what I did:</p><p></p><p>1) started with a middle book load and did a seating depth test. The rifle showed a real preference for .060 off the lands.</p><p></p><p>2) did an OCW test from the middle load up in .3 gr increments with the preferred seating depth and observed grouping. The rifle again showed a preference for higher pressure/velocity. I used my MS chrono during this phase and my es was lowest with with the highest velocity.</p><p></p><p>3) my next step will take this high end load and start refining powder charge, seating depth, neck tension, etc, etc. It took me less than 30 shots to get to this step. I think I got lucky with this rifle, but this process may help you narrow down what your rifle likes and then go from there.</p></blockquote><p></p>
[QUOTE="Tree Farmer, post: 2410710, member: 75473"] I'm trying to develop a load for a 280 AI. So far, so good. Here's what I did: 1) started with a middle book load and did a seating depth test. The rifle showed a real preference for .060 off the lands. 2) did an OCW test from the middle load up in .3 gr increments with the preferred seating depth and observed grouping. The rifle again showed a preference for higher pressure/velocity. I used my MS chrono during this phase and my es was lowest with with the highest velocity. 3) my next step will take this high end load and start refining powder charge, seating depth, neck tension, etc, etc. It took me less than 30 shots to get to this step. I think I got lucky with this rifle, but this process may help you narrow down what your rifle likes and then go from there. [/QUOTE]
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