Flat spots on tumbled balls

[JDBraddy]

I started casting in 1948! I ain't gonna cast now! Hornady has an unlimited supply of 'mashed balls' aka swaged balls with no air pockets! They shoot mighty fine!!

Assuming you where at least 14 when you started, that would put you well into your 90's, all I can say is that if you're still shooting....
God has blessed you!
Much respect