327. If I remember it will fire 9 calibers.
AI Overview
The .327 Federal Magnum is a powerful, high-pressure revolver cartridge offering near .357 Magnum performance with less recoil, allowing for an extra round in smaller revolvers, and offering versatility by also firing .32 H&R Mag, .32 Long, and .32 S&W ammo. It's known for flat trajectories, good terminal performance with modern bullets, but also significant muzzle blast and recoil in small guns, making it a niche but respected choice for self-defense and small game, available in revolvers from Ruger, Taurus, and lever-action rifles from Henry.
Key Characteristics
Performance:
Delivers power comparable to a .357 Magnum, but in a smaller diameter, often fitting six rounds where a .357 might only hold five.
Versatility:
A major advantage is its ability to safely fire less powerful .32 H&R Magnum, .32 Long, and .32 S&W cartridges, making it great for practice.
Recoil & Blast:
Produces noticeable recoil and significant muzzle blast, especially in lightweight, short-barrel revolvers, which some find intense.
Pressure:
A high-pressure round (around 45,000 psi), making it a "super magnum" relative to the .32 H&R Magnum.
Applications:
Effective for self-defense (with appropriate ammo like HST or Gold Dot) and small game/varmint hunting.
Also, can go with something like the Taurus .380 ACP UL Revolver. There is a whole new breed of 380 ammo and is nothing to sneeze at. This is a revolver and made for smaller hands and good for lesser recoil and weight.