Anyone else ever thought about this ?Foster slugs do not expand to the bore by gas pressure, they are sized by the force of the wad on the base to fit the bore. They shoot well in smooth bore barrels because of the weight distribution on the slug. They shoot even better through a rifled choke tube, but in fully rifled barrels they are way soft, and the barrels lead so quickly that they only shoot well for about 3 shots in my tubes.
I like Foster type slugs a lot, as they are economical, and very effective at 50-75yds. Beyond that not so much. Sabots and designs like the Buckhammer and Lightfield are definitely the ticket for accuracy at longer ranges, most are so expensive they are not worth the money. I find that different lots of the same design and brand can change point of impact by as much as a foot at 75yds.
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