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/
Anyone use one? Saw them at IPSC Nationals and was intrigued. The parallax demonstration was nuts. The dot didn't move no matter what you did moving your head around.
There was a period of time where Bobby had to purchase slide blanks from a well-known very large company. That batch seem to have some issues with slide cracking. One of my CKs was one of them. I had two others with many more rounds that are still going strong today. If yours was before that batch you should be fine.
Black Dot chronoed at 172 out of my Open MPA. I've got some outdoor Dynamics but haven't chronoed it yet.
ETA...I've run black dot for several years without a hiccup.