I do both, But actually prefer seating the OP Wad first, especially if i have a nice slip fit bullet that will load with the weight of my brass range rod, I like to give the OP Wad a good SOLID push on the powder, then slide the bullet down and just slightly push it against the OP Wad. I actually pushed a Bullet through it’s paper jacket 1 time and didn’t even realize it due to seating it with a tight fitting .060 Vege wad, everything felt fine? But somewhere down the bore (probably the last 1” or so) the paper failed (I'm sure it was at the base) and pushed through the paper jacket. You have to be careful with Swaged bullets, they can have a very sharp edge around the base from the Swaging process and will cut your paper patch like a Razor blade! I give my cupped base swaged bullets a very light twist standing straight up on a piece of very fine emery cloth on a solid flat surface, then i take my RCBS deburring tool and ever so gently turn them, i am NOT trying to reshape the base, just take the little sharp burr off the outer edge. The procedure i just mentioned will get rid of the burr, But use common sense here, i am NOT being aggressive with this at all, just very lightly!! The base is what steers the bullet.