Sorry...I only made a B in College Physics :)
One thing is I do not know how black powder, slow burning could be so powerful.
Sure, a long barrel and a heat quantity pressuring the gas, but that must have been a stuck bullet.
A 700 grain BMg coming out at mach 3, sure, 1.5 mile shots have been recorded...
I’ll have to check specks on black powder... Maybe they want to ban it indeed.
Anything to starve us.