Really a better question for the H&R Shotgun Forum, where there is much discussion on just such as you ask. If we ask nice I bet Quick will move it there?
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I concure with Ranger99, Fosters in a smoothbore, or the fancy high priced, hard to spell rifled slugs. Use the saboted, etc. in rifled bores.
As to Foster type, Ive had better luck in various smoothbores with WW, and Federal as both are (we;ll, used to be anyway) larger dia. than the Remmys, but in your gun, who knows. They are cheap enough to try. Use the barrel as is, many shoot surprisingly well even with choke intact.