A 3" black 632 comp sat in a local gun store nearly that long. The store owner said he would not re-order it. I had to order my 2 1/8" 632 Pro elsewhere. They aren't cheap - Ruger, Charter Arms, and Taurus models sold better. Only S&W and Ruger still offer the .327 Magnum chambered revolvers, the other two brands having dropped them last year. It's not a big seller.
They will chamber and fire .32 ACP, .32 S&W, .32 S&WL, .32 H&RM, and the designed-for .327 Federal Magnum. Between cleanings, shoot the high pressure .327 Federal Magnums first, following in reverse order from above. Once you've shot a shorter round, don't go back to .327 Federal Magnums - until you clean the chambers - they are such high pressure rounds that they use small rifle primers! That comp will require frequent cleaning, too.
I had 800+ .32 S&WL's - 94-96gr LRNFP homebrews - from my previous .32 H&RM Ruger dalliance. From my recollection, the GA Arms .32 ammo was no dirtier than others. Their 100gr .32 H&RM JHP was hot, however. Nice folks, too.
Stainz
PS I carry Speer 115gr Gold Dots - $20-$22/20 - range load is the American Eagle (Federal) 100gr SPJHP @ $27-$30/50.