Should have looked at the link.
It does appear that DT has tailored some .45 Colt loads for short barrels.
While I'd want to test it on my own Chronograph, I think you've found a couple excellent factory loads for a short barrel. The 165's are expensive, but at that velocity, they should expand and penetrate. I will say I have never shot that load, or bullet, in .45 Colt, so I'm guessing.
Buffalobore Barnes are expensive, but look like they would also develop really good velocity out of the 3" barrel:
https://www.buffalobore.com/index.php?l=product_detail&p=255
Both should be chronographed and tested.
They also make a cheaper, but not by much HP and full-wadcutter that would likely fall in the same area as the rounds you suggest:
https://www.buffalobore.com/index.php?l=product_detail&p=269
https://www.buffalobore.com/index.php?l=product_detail&p=332
To sell me on hollowpoints, at velocity less then 1200 fps, that are slow expanding, you are going to have to show me some gel tests.
Hawk recommends as a minimum 1200 fps for their thick jacket, slow expanding HP's. Not familiar with Barnes, except in rifles, due to the extreme cost.
Problem I find is all of the above ammo choices, and .45 Colt in general, is the most over priced of any ammo category, other then .44 Special.
When you reload .45 Colt you get a real feel for how deep in your pocket these ammo companies are getting.