Good Morning James,
Thank you so much for choosing LuckyGunner.com!
These will work perfectly in your Mossberg 590. They will provide accuracy to hunt with good for about 90yds.
Many shotguns now have barrels that are rifled much like your typical rifles and handguns.
These shotguns can take advantage of the longer range and more accurate “Sabot” slugs.
If you have any additionaly questions please let me know - I am happy to help!
Thank you,
Christina