[Svartalfiar]

We know it is not a self defense kill because...

Unusual for a deer to be killed with a handgun in a public use area.

Unusual, but not "never happens"? What other explanation is there for someone shooting a deer with a handgun, and not harvesting the kill? They certainly weren't hanging out at the boat ramp waiting to ambush a deer...

[gundog]

Probably going fishing. I’m not familiar with that particular boat ramp, but there’s a very interesting cross-section of humanity that peoples the Oregon night.