I used Ball-ets for 4 or 5 years, until I tried Great Plains Bullets. I loved how well those Ball-ets loaded in my Hawkin, very easy. Accuracy at 50 was excellent in my gun. Much better than I could get the patched round balls to perform. I shot 4 deer with the Ball-ets, each shot resulted in a dead deer after 40-60 yards. I was always curious to see how well they mushroomed but never recovered one, all shots were pass throughs in the chest cavity. To me Ball-ets were pretty cheap and a better alternative to round balls, so I liked them. To be fair, I didn't experiment with different powder charges, patch thicknesses, etc for the round balls as much as I should have. Now I'm just amazed how accurate the Great Plains Bullets are out of my flintlock out to 100 yards, so that's what I shoot today.
Jeff