I had the chance to try my new load on a small blacktail.
I was concerned that the all-copper bullet wouldn't expand at such low velocities (I know- .45 is big enough!), but Barnes' skiving (or whatever) worked well.
55 yards, uphill, quartering to.
Entered low inside shoulder, exited (under hide) middle vert and halfway back behind off shoulder. I neglected to check for broken ribs on either side.
Still weighs 185 grains, expanded to .771.
I guess I'll carry it with good confidence.