Hey all
Been mulling on a thought or two for a while, thought I'd stop theorizing and just ask.
As I understand it, alloys have a velocity limit...softer = slower...in most cases.
Aside from rotational velocities doing weird things to soft alloys, is the limit actually velocity or is it pressure? What got me thinking of it all is the velocity gained with a longer barrel...let's say you're pushing a 150-170 gain boolit from an 06 ...same charge of powder will give you different velocities from a 20 inch barrel vs a 26 inch barrel...the bullet won't know the difference other than being in a barrel longer...the pressure goes way down after the first few inches so is the alloy limit velocity or pressure (I'm guessing it's pressure)
If it's pressure, then different powder burn rates would be important not for velocity limit but max pressure with the charge intended...
My goal is to get boolits working well (accuracy) with lighter loads of faster powders but the faster the powder the higher the pressure and if the alloy limit is pressure based I'll need to work around that carefully to maintain accuracy...
This may be why I've heard higher charges of stuff like unique in 06 is possible but rarely helpful as accuracy starts to decline with higher charges...I'd imagine fast fast powders like red Dot and titegroup would exaggerate this even more.
I have a 26 inch barreled 06...would like to employ it to dispatching whitetail this year with a 165 ranchdog over (probably) 2400 powder....but all this got me thinking about internal ballistics of cast boolits and wanted to check with the sages to get your knowledge
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