Use it. Anything epoxy is better than regular primer. I would use it and not think twice. A recommendation though. Get MEK at your local Lowes in the paint section to clean it out of your paint gun. Anything epoxy primer/paint related dries like ******* concrete Once it dries in your paint gun, you might as well throw it away. I have a nice Sata Jet HVLP copy I bought at my local auto body supply probably 17-18 years ago. Still works great.
I am using free out of date light grey Akzo Noble radome primer from my job. It's a 2 part epoxy that's impact resistant. PN is 512x310. This stuff is freaking great. Dries hard as a rock in a few hours. Heres a rim I shot with it on friday afternoon.
I use paper disposable Dixie cups to dip out the primer and activator. I use one cup for each part so I dont contaminate the base or activator. About a half a Dixie cup of each part mixed up in a plastic paint pail is enough to primer one whole rim with none or very little material left over
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