I've done a few, they've turned out okay, but I have never been completely satisfied with the results...Are there any good sources of information on different tips & techniques out there anyone here is aware of and willing to share?
By "antique" do you want them to look 150+ years old or like they've seen a hard few years of field use?
I've done both to various revolvers, I've found it's far easier to Antique brassers but my Uberti London Navy came out looking like a well-loved but cared for revolver.
I just use a vinegar bath to remove the blue, and how you treat the steel after it comes out decides how much patina is on the steel. If you clean the vinegar off right away, and polish it up with mag polish , they are basically just gunmetal and will patina normally. If you let the parts sit out covered in vinegar, they will rust instantly. You can wipe the bore and chambers with CLP to protect them and let everything else rust for a day or two. Clean everything up and it will have a nice dark, streaky patina like an old , well worn gun.
Brassers do come out better, with a few range trips because the brass yellows up nicely with some handling and powder residue from shooting.
I just started watching "Hell on Wheels" again, and even though Bohannon's brass frame 1860 Army is totally incorrect, the gun they use in the show has a nice beat up, hard used look to it , and I'm tempted to get one and make it look well used like that one. Basically it looks like it was drawn and reholstered 1000 times and banged around a little.
I've also just let time and use begin to "antique" them, like with my Uberti 1st Model Dragoon. Holster wear is beginning to mellow some of the blue, the brass is yellowing up nicely and it has some character just from range use. In time it will look like a well used original.