I have had a .30 Carbine Blackhawk for a couple years now. I also have a Single Six in .32 H&R as well as a couple handguns in .32 ACP. I always thought it kind of a hassle to stock bullets in both .308 and .312 in essentially the same weight class. It seems that .004" difference is just enough to make it not work well enough to just use one for all. So I've been kicking around the idea for a while to get something in .327 Fed instead, sell the .30 Carbine, and consolidate to bullets in the .312" class. So to do this I just bought one of the 8-shot Blackhawks that were made a few years ago. It should arrive at the LGS in a week or so. So does anyone have revolver in both calibers, and what observations have you made? It seems my .30 Carbine is very accurate - I have an 8"x10" steel plate that I can hit offhand pretty regularly at 100 yards. Most of my other revolvers I have to get 50 to 75 yards to do the same. The smaller calibers just seem to be more accurate for me. However, it's also pretty finicky on brass length. Just barely too long and it will bind up the cylinder. Just barely too short and the firing pin won't get a solid strike on the primer. And this seems to be the case whether shooting reloads or factory ammo. So looking through my manuals, I have a couple that list both the .327 as well as the .30 Carbine in a pistol. More will have one or the other, but not both in the handgun section. I see in general they show the .30 Carbine has the advantage in velocity. Although all tested that cartridge with a longer barrel than used for the .327. And some will use a solid test barrel vs. a revolver with its inherent cylinder gap. I'm thinking it will be close enough for my needs. Should be fun when I get the chance to play with & compare the two.