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Rifles, Reloading, Optics, Equipment
Reloading
Need some help with sizing
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<blockquote data-quote="kraky" data-source="post: 369964" data-attributes="member: 180"><p>The chart gets messed up and columns get goofy when posting. The first of course is the powder brand. The next is the fill ratio.....how full the case gets with the powder. The next number is the powder charge in grains, next is charge in grams, next is velocity, next is amount of propellant burned, next is max pressure, next is pressure when bullet exits muzzle, last number is burn time.</p><p>Re the dangerous load notation....quick load starts warning of pressure around 58k pressure. I usually try and work up to at least 60 k for my loads so I set the top pressure there.</p><p></p><p>To use the important numbers here are some examples...</p><p></p><p>RE22 95%fill 54.3 grains, 3222vel, </p><p>I7828 99% fill 54.4 grains 3243 vel.</p><p>RE17 81%fill 48.9 grains 3156 vel.</p><p></p><p>FWIw..I use quick load alot. It isn't always perfect for forecasting. If anything it's usually slightly conservative....especially if you have a bit of freebore in your rifle. I'd say start a couple grains under the loads predicted and see what vel comes up and apply common sense as you work up. If your cases hold about 70 grains of water to the top these numbers should be close.</p><p>Bottom line is as you work up with the 105 amax and slower powders you should begin to get near max at about 3250-3300fps. The powder list sorts from the slowest burning powders down to the faster powders.</p><p>You mentioned you were fireforming cases with 48 of re17. It will be interesting to see the velocity compared to what it thinks the max load is above. My guess is you will be doing about 3000-3100....but thats where the chrono comes in handy.</p></blockquote><p></p>
[QUOTE="kraky, post: 369964, member: 180"] The chart gets messed up and columns get goofy when posting. The first of course is the powder brand. The next is the fill ratio.....how full the case gets with the powder. The next number is the powder charge in grains, next is charge in grams, next is velocity, next is amount of propellant burned, next is max pressure, next is pressure when bullet exits muzzle, last number is burn time. Re the dangerous load notation....quick load starts warning of pressure around 58k pressure. I usually try and work up to at least 60 k for my loads so I set the top pressure there. To use the important numbers here are some examples... RE22 95%fill 54.3 grains, 3222vel, I7828 99% fill 54.4 grains 3243 vel. RE17 81%fill 48.9 grains 3156 vel. FWIw..I use quick load alot. It isn't always perfect for forecasting. If anything it's usually slightly conservative....especially if you have a bit of freebore in your rifle. I'd say start a couple grains under the loads predicted and see what vel comes up and apply common sense as you work up. If your cases hold about 70 grains of water to the top these numbers should be close. Bottom line is as you work up with the 105 amax and slower powders you should begin to get near max at about 3250-3300fps. The powder list sorts from the slowest burning powders down to the faster powders. You mentioned you were fireforming cases with 48 of re17. It will be interesting to see the velocity compared to what it thinks the max load is above. My guess is you will be doing about 3000-3100....but thats where the chrono comes in handy. [/QUOTE]
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Need some help with sizing
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