Looks good!! What primer did you use?
I have shot a fair amount of stuff in the last couple years and about 20% of it has been PPG DP40, which is kind of an industry standard but it's ferociously expensive.
The other 80% (including this axle) has been a local company, Southern Polyurethanes; they have a line of epoxy primers. I
love this stuff. It has great coverage, a gallon goes a long way. It sprays great-very few runs, lays down flat, is extremely forgiving on temperature and humidity and has great adhesion, both in terms of adhering to the surface and the paint adhering to it. And it's cheap. Gallon of primer is $93, gallon of activator is $93, 1:1 mix, so it's $93 a sprayable gallon.
http://www.southernpolyurethanes.com/#!products/c19pa
My partner stripped these 2 M416s to bare metal in 2007 to use for his environmental compliance company. They used Land Rover Discoverys for land surveying, stormwater monitoring, etc. They needed small trailers for tools the Rovers couldn't carry. Bought these, had 'em sandblasted to bare metal and we SP spoxy primed them so they could be Line-X'd. Then the economy cratered and one of the companies basically stopped existing and the trailers went dormant. So they've sat outside for almost 10 years, used on and off. And there's no corrosion on them. Primer isn't designed to be a topcoat, so I think this is a pretty good torture test of this material.
10 years later (look at the wheel and the tongue):
I did these wheels for a '65 Plymouth for a buddy with the SP stuff:
This USAF '69 W200 Power Wagon (I can't remember why Dave had bought a gallon of the white epoxy primer for this project):
My Deuce frame:
I really like this line of primer. My Dad's '68 Chevelle is either going to get this stuff or the DP40. Depends if we farm it out or if I end up painting it (all the quotes we've gotten for paint are $10K+ so I may end up doing it).