I am growing tired of the Kimber Montana gray color that is on my .325 WSM.

I would like to paint it myself. Probably a green color.

What brand and model paint will give good durability on this hunting rifle?

If you're talking "rattle can", I've had very good results with Krylon's Fusion line.

Me too. Also used a couple coats of matte clear over the top.

Brownells Aluma-Hyde II