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Rifles, Reloading, Optics, Equipment
Reloading
Load development question..what next?
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<blockquote data-quote="Bart B" data-source="post: 781432" data-attributes="member: 5302"><p>Real slow powders tend to produce erratic accuracy at max loads, at least in my opinion. Their pressure curves are not all that repeatable from shot to shot even with decent velocity numbers. This is often the compromise folks have to deal with to get the extra velocity they produce.</p><p></p><p>When heavy bullets were popular in the .308 for long range competition, 48 grains of IMR4350 was "the" load with Sierra's 200-gr HPMK bullet; won a lot of matches and even set records. But muzzle velocity in a 26" barrel was about 2500 fps. With that 208 AMAX, I suggest 47.5 grains of IMR4350 but you'll probably not get over 2500 fps.</p><p></p><p>It's also best to measure accuracy by the largest groups shot with a given load. That's what you can count on all the time. Those tiny groups with a given load only happen once in a while. With the exception of Berger's VLD bullets, most shoot more accurate when gently pushed into the lands when loaded.</p></blockquote><p></p>
[QUOTE="Bart B, post: 781432, member: 5302"] Real slow powders tend to produce erratic accuracy at max loads, at least in my opinion. Their pressure curves are not all that repeatable from shot to shot even with decent velocity numbers. This is often the compromise folks have to deal with to get the extra velocity they produce. When heavy bullets were popular in the .308 for long range competition, 48 grains of IMR4350 was "the" load with Sierra's 200-gr HPMK bullet; won a lot of matches and even set records. But muzzle velocity in a 26" barrel was about 2500 fps. With that 208 AMAX, I suggest 47.5 grains of IMR4350 but you'll probably not get over 2500 fps. It's also best to measure accuracy by the largest groups shot with a given load. That's what you can count on all the time. Those tiny groups with a given load only happen once in a while. With the exception of Berger's VLD bullets, most shoot more accurate when gently pushed into the lands when loaded. [/QUOTE]
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Load development question..what next?
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