My 12 ga shot the winchester rifled slugs really well until it fouled out, around 4 or 5 shots. I'm talking like 2 inch groups or so at 100 yards. They will work, they just make a heck of a mess is all.
The downside is they don't have the same terminal performance a regular bullet will have. The sabot loads that use a controlled expansion bullet will perform better on game, as in they do more damage. Both will kill deer, no doubt about it, but the better bullets do give you an edge. And in most cases they will extend your range as well.
It's a killer sighting them in and finding something your gun likes because of the price, but once you get there it shouldn't be too bad. One or two boxes should last a season, and maybe another box or two in the off season to practice with. Unless you plan on shooting a lot in the off season. Which will also be a pain if you go with rifled slugs because you will be cleaning your gun all the time in the field, and trust me it gets messy getting all that lead out of the barrel.
My 12 ga really liked the winchester platinums but I don't know how they perform in the 20's. I would for sure give the Hornady rounds a try though if others with the same gun have been having good luck with them. That is some pretty impressive performance for a 20 ga shotgun. Puts you up there around 45/70 type performance I think.
And you know as well I do the minute you limit yourself to 50-75 yards the buck of a lifetime will step out at 110 yards. And you will have to decide to either take a hail mary shot or let him walk. Where as with the right load in that gun it would be a give me shot, providing you could hold still enough

.
My opinion anyway
Paul