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The Range
Ammo & Reloading
Reloading - Does the bullet really matter
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<blockquote data-quote="Shadowrider" data-source="post: 2984304" data-attributes="member: 3099"><p>Not necessarily. Look at it backwards from where the ogive starts to the base of the bullet. That's going to vary. You want the same amount of bearing surface of the bullet inside of the case. Obviously you can't alway achieve this and that's why you have to vary powder charges. I like to start with the SAAMI cartridge drawing and work from that. EDIT: If you are using load data from Speer and loading Speer bullets for instance, there's no reason to bother with any of this as they've already done the math. Just go by their data and sleep easy.</p><p></p><p>The smaller the case the more sensitive it will be to variance. 9mm is a small case and pretty sensitive to changes in internal volume all other things being equal. .357 Magnum would give a lot more leeway in comparison. Hope this makes sense.</p></blockquote><p></p>
[QUOTE="Shadowrider, post: 2984304, member: 3099"] Not necessarily. Look at it backwards from where the ogive starts to the base of the bullet. That's going to vary. You want the same amount of bearing surface of the bullet inside of the case. Obviously you can't alway achieve this and that's why you have to vary powder charges. I like to start with the SAAMI cartridge drawing and work from that. EDIT: If you are using load data from Speer and loading Speer bullets for instance, there's no reason to bother with any of this as they've already done the math. Just go by their data and sleep easy. The smaller the case the more sensitive it will be to variance. 9mm is a small case and pretty sensitive to changes in internal volume all other things being equal. .357 Magnum would give a lot more leeway in comparison. Hope this makes sense. [/QUOTE]
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Reloading - Does the bullet really matter
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