Can't find 327 Federal ammo in any gun stores, nor on any of the online ammo sites.
I feel your pain.
There is some to be had if you want Federal Hydra-Shok and are willing to pay around $1.50 a round. Of all those sellers on ammoseek, I have only dealt with SGA and have been very happy with their service. They ship free when you spend $200 or more, which isn't hard to do. Be careful with others that may be lower price as their shipping charges can get crazy high.
Federal does show 3 types on their website, but none is available.
Underwood and Buffalo Bore are awesome but higher than the Federal.
Gunbroker usually has some but it typically goes for over the dollar a round price, even for a plinking type load and you'll have to add shipping too.
Reloading is very hard to do right now unless you have some brass, and unfortunately when I do find brass, it's selling for a dollar a round as well, even for once fired stuff. If I have to pay that much I'd rather buy loaded ammo and shoot it and then have the brass.
Right now I'm reloading and shooting a 32 H&R load in my 327 rifle and handgun. As mentioned you can also shoot 32 long and 32 short in the revolvers. I believe 32acp can be fired in revolvers too.
I ran across some 327 mag at a local gun show last fall and paid 40 per 50 for the Federal JSP load. Hopefully Federal will make a run on some of their 85 and 100 grain JSP loads soon and help us out.
Bottom line is it's out there in limited numbers and comes down to how much your willing to pay.