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Rifles, Reloading, Optics, Equipment
Reloading
Question about a load development method ....
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<blockquote data-quote="Veteran" data-source="post: 3082928" data-attributes="member: 118038"><p>By the way, I see a lot of folks saying bullet seating depth is the coarsest adustment you can make.</p><p></p><p>That makes some sense to me because within some defined range of differing powder charges the seating depth likely has the biggest impact on bullet exit time at the muzzle. </p><p></p><p>Bullet Exit timing ( a proxy fir velocity) and harmonics have a lot to do with accuracy and group size.</p><p></p><p>I think because the bullet seating depth may have a big impact on bullet exit timing, this is precisely why its important and noted as a more major or "coarse adjustment."</p><p></p><p> There probably is an increasing charge weight that at some point which will if still at a safe and case capacity threshold will overcome the effect of seating the bullet deeper, until it exits the muzzle at the same time it did when the bullet was seated more shallow.</p><p>You could model this in Quickload to see if this is right. I have not tried it, but it seems to make sense.</p><p></p><p>Just another thought in explaining why bullet seating is a big factor, at least over some defined range of charge weights.</p></blockquote><p></p>
[QUOTE="Veteran, post: 3082928, member: 118038"] By the way, I see a lot of folks saying bullet seating depth is the coarsest adustment you can make. That makes some sense to me because within some defined range of differing powder charges the seating depth likely has the biggest impact on bullet exit time at the muzzle. Bullet Exit timing ( a proxy fir velocity) and harmonics have a lot to do with accuracy and group size. I think because the bullet seating depth may have a big impact on bullet exit timing, this is precisely why its important and noted as a more major or "coarse adjustment." There probably is an increasing charge weight that at some point which will if still at a safe and case capacity threshold will overcome the effect of seating the bullet deeper, until it exits the muzzle at the same time it did when the bullet was seated more shallow. You could model this in Quickload to see if this is right. I have not tried it, but it seems to make sense. Just another thought in explaining why bullet seating is a big factor, at least over some defined range of charge weights. [/QUOTE]
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Reloading
Question about a load development method ....
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