Round Ball Versus Conical Exit shapes

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KodiakHunter

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Hey there guys!

I am told that round balls shot from muzzleloaders, do not obturate the bore and that they tend not to alter their shape much after ignition.

I personally find this hard to believe, given the high heat and gas pressure build-up from ignition. I tend to believe that the gas presses the back of the patched round ball and squeezes the rear towards the front to form a flatter projectile, as it exits the muzzle. Therefore, it does obturate the bore as it travels along the length of the barrel.

Please critique me here, if I'm wrong.

Of course the miniball or conical obturates the bore and becomes a flatter-looking projectile when exiting the muzzle as well.

PS.

What is the shape of a "round ball" when it exits the muzzle?
 
I have a hard time seeing the ball leave the barrrel. my eyes are on the sights. :wink:
 
I'm no expert but I would think a ball being a sphere would take equal pressure on all its surface area(in front of the charge)....so its just pushed out? with no deforming.

Cell
 

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