lightly oil any parts that move
Yes
what is the market value of a remington 20 gauge semi-automatic sportsman 58 shotgun?
75-400 USD
150 USD
Model 58 is an automatic not a bolt action
3, including the one in the chamber.
Take it to a gunsmith
Take it to a professional
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100-300 USD
Standard grade Model 58 shotguns sell in the $175-$250 range.
Made from 58-63. 100-300 USD