.327 Federal Magnum Firearms
The .327 Federal Magnum cartridge was apparently developed in partnership with Ruger. Ruger has released the SP101 in this cartridge.
Ruger SP101

Ruger SP101
The Ruger SP101 is a stainless steel double-action revolver that seems to be built for strength and reliability. The .327 Federal Magnum model has a six round capacity and a 3-1/16" barrel. The rear sight is adjustable for windage only.
MSRP: $572.00
Link: Ruger
SP101
Charter Arms 2.2" Patriot

Charter Arms Patriot 2.2"
The Charter Arms Patriot .327, built on the "Bulldog" frame, is stainless steel with a full-size grip. Six round capacity. This model has a 2.2" barrel and fixed sights.
MSRP: $455.00
Link: Charter
Arms Patriot 2.2"
Charter Arms 4" Patriot

Charter Arms Patriot 4"
This model of the Charter Arms Patriot .327 is also stainless steel with a full-size grip, but has a 4" barrel and adjustable sights. Six round capacity.
MSRP: $455.00
Link: Charter
Arms Patriot 4"
Smith & Wesson Model 632

Smith & Wesson Model 632
Smith & Wesson has finally entered the market with their Model 632 Pro Series Carry Comp. It has a 3" barrel, adjustable rear sight, 6 round capacity, full synthetic grip, and matte black finish. It also appears to be ported.
MSRP: $980.00
Link: Smith & Wesson Model 632
Taurus
Taurus now has 327 Magnum revolvers. I need to check out their entire line to see which ones and how many. At minimum, they have a 2" revolver available in blued or stainless steel. This is not confirmed on their web site, nor via Gun Genie. However, they are showing up for sale on GunBroker, and at least one seller has called it a limited edition. They all appear to be six-shot snubnoses. No clue yet about weight. Fixed sights, exposed hammer.
Freedom Arms
On GunBroker, I have seen a Freedom Arms revolver that comes with a conversion cylinder in 327 Federal Magnum, the other being in 32 H&R Magnum. However, it may be a one-of-a-kind custom job. It is a model 97 with a 7½" barrel. It also looks like it might be a single-action revolver.