I have a cheap taurus model 82 that I picked up from buds a while back. The finish is kinda crappy. I was thinking of doing a rust bluing job on this. How hard is this to do? from the little I have read it seems to be pretty easy to do. If this comes out nice I think that I will try and rust blue an old remington 510 targetmaster that I have just started tinkering with. So is this something an average diy'er can do?