We have filed square every round front sight we ever found on any of our guns.
That said for 30 yards you almost don't need sights at all. I've done fine with a shotgun bead and no rear and smoothbore with round balls to 30 or 40 yards with an old 1800s musket.
And whether you have X or Y front at 30 simply really isn't going to make a difference. Only 2 things that help would be big enough rear ap to have light to see. And bright enough or contrasting enough front to see, rather than shape.
We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back..... Whiskey Tango Foxtrot, over....
