The Foster slug’s greatest characteristic is a hollow rear portion, which puts most of the weight near the tip of the slug. Foster originally hand-cast these slugs and filed grooves on the side for rifling, which is much the same as Foster-type slugs appear today. Foster started making them for neighbors in the early ‘30s as people were looking for something to knock down a deer to feed families during the Great Depression. This is the original slug created to be fired in a smoothbore shotgun. Modern technology, however, has allowed for tweaks and design changes that have led to ever increasing accuracy.
In general, there are two main types of shotgun slugs: Full-bore slugs, in essence, fill up most of the bore of the shotgun as they travel down the barrel, and sabot slugs that employ a plastic sabot to engage the rifling and then drop off after it leaves the barrel, much like a wad deviates from a load of birdshot in flight.įoster Slugs Federal’s TruBall slug is of the Foster design, meaning it has a hollow rear portion. What styles of shotgun slugs are available today: Modern-day shotgun slugs have had their own evolution and history, and as you may suspect, they’re not all created equal.
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