Will a 20 gauge model 583.19 with full choke shoot slugs?
No, a 20 gauge model 583.19 with a full choke should not be used to shoot slugs. The full choke is designed for shooting shot, and the tight constriction can damage the slug or cause it to veer off course. If you want to shoot slugs with your 20 gauge model 583.19, you should use a cylinder bore barrel or a barrel with an improved cylinder choke.
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