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Rifles, Reloading, Optics, Equipment
Reloading
Load Density, Bullet Jump, Case Air Space
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<blockquote data-quote="Frogman77" data-source="post: 2261804" data-attributes="member: 15339"><p>This was mentioned before but different powders behave differently. Some like compression, some do not and some of it is cartridge dependent.</p><p></p><p>h1000 in my wsm does really well with lots of compression. I can't even get enough in the case to hit pressure signs.</p><p></p><p>Retumbo in my 338 norma goes from easy shooting to locked bolt with just a little compression even though based on quickload I should be well under saami max pressure.</p><p></p><p>In general I try for loads that are slightly compressed that don't generate more than 63kpsi based on quickload predictions. I know quickload isn't Completely accurate when it comes to actual pressure, especially with solids. But I'll usually confirm with simple pressure testing ladders, and almost always when using jacketed Bullets when I get close to 64kpsi Based off quickload I start seeing the first signs of pressure. Anything behind that I steer clear of.</p><p></p><p></p><p>Bottom line, when tuning loads there are a lot of variables. Does Load density matter? In my opinion it does. I try to keep my case fill somewhere between 100% and 106% if the case allows for it with out crushing Bullet jackets when seating. I have gone higher but you need to use a long drop tube or vibrate. The cases to settle the powder.</p></blockquote><p></p>
[QUOTE="Frogman77, post: 2261804, member: 15339"] This was mentioned before but different powders behave differently. Some like compression, some do not and some of it is cartridge dependent. h1000 in my wsm does really well with lots of compression. I can’t even get enough in the case to hit pressure signs. Retumbo in my 338 norma goes from easy shooting to locked bolt with just a little compression even though based on quickload I should be well under saami max pressure. In general I try for loads that are slightly compressed that don’t generate more than 63kpsi based on quickload predictions. I know quickload isn’t Completely accurate when it comes to actual pressure, especially with solids. But I’ll usually confirm with simple pressure testing ladders, and almost always when using jacketed Bullets when I get close to 64kpsi Based off quickload I start seeing the first signs of pressure. Anything behind that I steer clear of. Bottom line, when tuning loads there are a lot of variables. Does Load density matter? In my opinion it does. I try to keep my case fill somewhere between 100% and 106% if the case allows for it with out crushing Bullet jackets when seating. I have gone higher but you need to use a long drop tube or vibrate. The cases to settle the powder. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Load Density, Bullet Jump, Case Air Space
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