Gdawgs, I don't load the .327, but I wouldn't give up on True Blue until you're working toward the top end of its load range. I use it as a short barrel powder for .357 Magnum and there is good data at
www.ramshot.com. Specifically, I worked up a load for a 2 3/4" barreled Speed-Six. With the Remington 125 gr. SJHP loaded at 1.583" with 10.1 grs. of True Blue, average velocity is 1278 FPS with an SD of 13. Pretty sure that I could get the SD under 10, but this load is very accurate in my S-6 while still being fairly comfortable for DA shooting. I've made very accurate loads in 9mm and the .40 S&W. On Wednesday, I tried a new .45 ACP handload using a 200 gr. Cast lead RNFP loaded to 1.210" over 7.7 grs. of True Blue with a CCI-300 in assorted cases. It was exceptionally accurate in my SR45 and chrono'd 891 FPS.
Another thing that might be worth trying with your .327 is a good cast lead bullet that's at least .001" greater in diameter than the groove diameter of your barrel. As far as jacketed bullets, I think you're gonna need to be at mid level or higher from your load data. In 9mm, you can load from relatively mild to as fast as anything you can buy from the factory. Fact is, many IPSC shooters that load and shoot 9mm Major, use True Blue to do it. It is very pressure stable as all powders must be to load 9mm Major where only 4 or 5 powders are commonly used. So, if the pressure rating is fairly high for a Max. load in .327 Magnum, I wouldn't be too concerned because I know how pressure stable True Blue is. Actually, the only .327 data I have is Ramshot's but it's typically good data as far as Magnum revolver loads go.