Same here
Im a brass whore also.
I pick everything up that is centerfire.
Some ill reload. Some ill trade or sell off.
As for your target picture. I don't think its bad at all. Just depends on what you are doing with your firearm.
For me personally I use mine for Carry. I don't competition shoot any more. So i base everything at the range on carry.
And the Shield isn't something I would consider a tac driver. Its small which makes them harder to be accurate with for the normal guy.
I bought one years ago when they first came out. Mine was actually the first one that was sold at our local guy years ago.
It dosent shoot near as accurate as my full frame 1911.
But its apples and oranges there comparing the two.