I believe Hastings still makes a rifled barrel for 20g 1100. I have tried the screw in rifled
chokes in 12g 870 & 1100 and found them less accurate than smooth bore. I think all the
Hastings rifled barrels are marked not for use with the solid copper slugs. I have a 1100 LT
with smooth bore slug barrel and it shoots Foster slugs into less than 3" at 100yds/ 5-shot
groups with 3x scope.
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