Mossberg International SA-2 - Manual (Page 5)

5
AMMUNITION
USE ONLY SUITABLE AMMUNITION
This 20 gauge semi-automatic shotgun is chambered for 3 inch magnum shells.
It is designed to be used with factory loaded shot shells between 2 3/4" (15/16
oz) and 3" (1 /1/4 oz).
Use of re-loaded ammunition voids the One Year Factory Warranty.
Never shoot slugs with a full choke. Use only the most open (improved
cylinder) choke.
Never use shotshells with a case longer than the chamber, as this can
cause damage to the firearm and may result in serious personal injury
to the shooter and/or others nearby.
Never shoot steel shot with a full choke. Use only a modified, improved
cylinder or skeet choke tubes.
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