How do traditional slugs differ in appearance from Foster slugs?

Traditional slugs and Foster slugs have distinct physical characteristics that differentiate them. Traditional slugs tend to have a smooth, cylindrical shape that does not include any complex features. On the other hand, Foster slugs are designed with a unique feature that distinguishes them from traditional slugs; they have ridges or grooves that create a resemblance to screws. This design not only affects their appearance but also influences their performance in terms of aerodynamics and stability in flight.

Understanding this difference helps hunters and shooters choose the appropriate ammunition for their shotgun, ensuring both safety and effectiveness when hunting or shooting sports.