Part of the interest and advantages some may have is with it's lower recoil. Arthritis or other hand, recoil sensitivity issues came to mind with other larger rounds. The normal advantages of .327 Fed Mag and .32 H&R Mag are many. Like smaller diameter than 9mm ammo. May be an ideal semi auto pistol round? The lack of local availability of either the firearms and ammo is sometimes detrimental? But, just found some .32 H&R Mag at LGS other day at much better price than online.
A couple more good articles on the .327 Federal Magnum:
The following ammunition cartridge ballistics information and chart can be used to approximately compare 9mm Luger (Parabellum) vs .327 Federal Magnum ammo rounds. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a...
www.foundryoutdoors.com
While the .357 Magnum is a popular caliber, it does have an alternative. We review in-depth the .327 Federal Magnum, the ammo and guns.
gunnewsdaily.com