Not sure if I should post here or in the rifle section.

The Olympics piqued my gal's interest in air rifles which caused a pellet shortage in the household. Finally got down to simple .22 lead round balls which I had never used. I am shocked by their accuracy and hitting power. They go right through 1/2" OSB at 25 yards and my simple ballistic experiments (shooting spoiled fruits, veggies, and various gauges of steel) show the round to be way meaner than a slug or birdie style pellet. I think these simple cheap things are what you want for small game hunting and pest control with an air rifle.

This got me thinking about muzzle loaders and shotgun slugs. Maybe the round is better? Are the old bore rifles and paradox guns intended for round balls?