I didn't catch what 243 was. work gun, fancy my varmint rifles better than yours gun, what. Also what Varmint specifically , Coyotes? fixed 4x or 6x. If your gonna shoot picket pins, over all ranges, I'd get a variable power,
But, I would strongly suggest an adjustable objective for Parallax. Cheapest scope I would recommend is Bushnell 4X12, I've got three of them from wallyworld and I bet they still have them, never had a problem. Walmart quarantee hard to beat. And walmarts closer than Leupold/burris/nikon factory.
Another option is ,used, at pawn shops, I've picked up a Kollmorgan(pre Redfield),a couple Unertls and two Lyman Allweather Alaskans, because pawn shop guys never seem to know about scopes! Partly they don't care cause they wont loan much on them. Unertl scopes rarely say Unertl on them. they say hawk, falcon,condor stamped with small blockletters and white paint, Alaskans look for 7/8" tubes, where name is stamped on scope will usually be covered with the rings, and they won't look under them, other Lyman scopes have alum bodies with thin finish, but super optics. Lots of guys starting to pick up Weaver steel tubes, but you'll still see them.
I think Nikon if you have to have a premium. new scope.