Wadcutters, by design, fill a good portion of the case when loaded.
Powder needs room to work, and room is limited uner that wadcutter. For that reason, I doubt you'll find a wadcutter loaded to +p pressures.
And, they're designed for target work. Target shooting doesn't require high velocities.
All this said, wadcutters will out-penetrate many +p SD loads, even at standard pressure. They don't expand much, if at all, and higher velocities won't help that. They're designed to "cut a hole", which they do very well (therefore the name "wadcutter")v.
I load my own, and I've never seen a load listed for +p pressures with a wadcutter bullet. I also see no reason to attempt doing it, since there's little or nothing to gain by it.
Daryl