Case capacity effects on velocity
I've been weighing my target cases.
The Lapua cases are noticeably lighter than the ADI and PSD cases I used before.
So this got me thinking, if you use the same amount of powder and the same weight projectile, what effect would a lighter case (assume it has more internal capacity ?) have on velocity ?
Asked another way, if you batch your cases and projectiles by weight, would you use the heavier projectiles with the lighter or heavier cases, and why ?
Case capacity effects on velocity
Quote:
Originally Posted by
ebf
Tx VC, and yup Hamsav, looks like my earlier comment about seating depth was the wrong way round... found an article on the Berger blog that discusses seating depth differences for same powder charge, and seems to say the same (provided you not jamming into lands and increasing pressure that way).
More volume, less pressure, less velocity.
So now taking it to the next level, if you sort cases by weight and projectiles by weight, and your end goal is to have consistent reloads that minimize vertical issues, would you load the lightest projectiles in the lightest (greatest internal volume) cases ?
Yes, I know it's hyper anal, so humour me :P
Bro you need help:)
Off topic but I just read this, might be of intrest to you.
http://www.arcanamavens.com/LBSFiles.../Downloads/DA/
Sent from my iPhone using Tapatalk