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Rifles, Reloading, Optics, Equipment
Reloading
H4350 load work up - 243 Win.
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<blockquote data-quote="Deleted member 46119" data-source="post: 766665"><p>First: I do the 1 round per load increment thing to establish pressure indications and get a feel for velocity. Much more economical to make 10 rounds at 1 each for .3 or .5 grain increments than to make 100 rounds at 10 each and waste those that are no where near the expected or desired velocities. I chron 'em and then I graph the results, I believe the "node" are visible by the predicable increment in velocity just prior to a reduction in the increment or even a reduction in velocity. Explained, If a few loads in the ladder show a 50fps per increment increase in velocity but suddenly drops to say 10fps or even back slides for a couple increments then for me, there seems to be a node at the "peak". Not enough data to make this a method but it helps me keep the round count down during load development.</p><p></p><p>I don't have my data book or I would enter a real example to express the above. </p><p></p><p>Second: didn't you mean increasing seating depth <strong>reduces case capacity</strong> and increases velocity?</p><p></p><p>FWIW: My A-Maxes and V-Maxes all like to be -.005 to -.010 from the lands but WMMV.</p></blockquote><p></p>
[QUOTE="Deleted member 46119, post: 766665"] First: I do the 1 round per load increment thing to establish pressure indications and get a feel for velocity. Much more economical to make 10 rounds at 1 each for .3 or .5 grain increments than to make 100 rounds at 10 each and waste those that are no where near the expected or desired velocities. I chron 'em and then I graph the results, I believe the "node" are visible by the predicable increment in velocity just prior to a reduction in the increment or even a reduction in velocity. Explained, If a few loads in the ladder show a 50fps per increment increase in velocity but suddenly drops to say 10fps or even back slides for a couple increments then for me, there seems to be a node at the "peak". Not enough data to make this a method but it helps me keep the round count down during load development. I don't have my data book or I would enter a real example to express the above. Second: didn't you mean increasing seating depth [B]reduces case capacity[/B] and increases velocity? FWIW: My A-Maxes and V-Maxes all like to be -.005 to -.010 from the lands but WMMV. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
H4350 load work up - 243 Win.
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