I would not have chosen one as a Rottweiler fan, but We inherited him from my daughter who couldn't handle him and I've turned into a big fan of doodles. He's a big fluffy knucklehead with some quirks but he has bonded to me and he makes me happy.
I spoke with the owner of Excaliber ammo at IPSC Nationals and he is working up loads for the MPA Open gun specifically for our team to test and then settle on. That will be very cool.
https://excaliber-ammo.com/