Description
The Buffalo Bore 327 Federal 100gr JHP load, Buffalo Bore item 37A, is a full-power self-defense and small game cartridge for revolvers and rifles chambered in 327 Federal Magnum. Buffalo Bore built it after customers asked for a 100 grain hollow point that used the cartridge to its full potential instead of the mild loads common on store shelves.

Buffalo Bore 327 Federal 100gr JHP Overview
The 327 Federal Magnum runs at much higher pressure than the older 32 caliber revolver rounds it grew out of, and it can rival a 357 Magnum in velocity with less recoil. Buffalo Bore rates this load at about 1,450 fps. Unlike many makers, the company publishes velocities measured in stock, over-the-counter revolvers rather than long test barrels. 5 inch Blackhawk and about 1,315 fps from a 3 inch Ruger SP101. Expect your own gun to land in that range depending on barrel length and cylinder gap.
Low-Light Friendly Powder
Buffalo Bore loads this cartridge with flash suppressed powder so the shooter is less likely to be blinded by muzzle flash when firing in the dark. That matters in a defensive revolver, where a big fireball from a short barrel can wreck your night vision for the follow-up shot. It does not make the round quiet; the 327 Federal is a loud, sharp cartridge, and hearing protection is still wise at the range.

Bullet and Terminal Performance
The bullet is a 100 grain jacketed hollow point. At the velocities this load produces it is designed to expand reliably while still reaching useful depth, which suits personal defense and small to medium game such as coyotes and similar animals at sensible ranges. It is not a bear load. Buffalo Bore offers a heavier 130 grain hard cast option, item 37B, for shooters who want deeper penetration and less expansion.
Recoil and Handling
Full-power 327 Federal loads recoil noticeably more than 38 Special and produce a sharp report, especially from small, light revolvers. In a compact five or six shot carry gun, expect a stout push and muzzle rise. Practice enough to know you can deliver fast, accurate follow-up shots. Many owners train with milder 32 caliber ammunition and confirm point of impact with this load before carrying it.

Compatible Firearms
Fire this cartridge only in firearms chambered and marked for 327 Federal Magnum. A 327 Federal revolver can safely fire the shorter, lower pressure 32 H&R Magnum, 32 S&W Long and 32 S&W cartridges, which makes practice cheaper. The reverse is never safe: do not attempt to fire 327 Federal ammunition in a gun chambered only for the shorter 32 caliber rounds.
Accuracy and Reliability
Buffalo Bore loads in smaller runs and has a long reputation among revolver shooters for honest velocity data. Still, every gun is different. Shoot at least a box through your revolver to confirm it groups well, chambers and extracts easily, and that the bullets do not pull forward under recoil in a lightweight frame. Check cases for sticky extraction, which can hint that a particular gun does not like full-power loads.
Carry Considerations
If you carry a 327 Federal revolver, rotate your carry ammunition periodically, keep it clean and dry, and inspect the bullet crimp. A small revolver that has been fired heavily with full-power ammunition should also be checked for wear by a qualified gunsmith.
Specifications
- Brand: Buffalo Bore Ammunition
- Item number: 37A/20 (Heavy 327 Federal)
- Caliber: 327 Federal Magnum
- Bullet weight: 100 grain
- Bullet type: jacketed hollow point (JHP)
- Rated velocity: about 1,450 fps
- Count: 20 rounds per box
- UPC: 651815037011
Before You Buy
Federal law requires buyers of handgun ammunition to be at least 21 years old when buying from a licensed dealer. Some states and cities restrict ammunition purchases, require background checks or limit shipping, so check your local rules before you order.
Who It Is For
The Buffalo Bore 327 Federal 100gr JHP is a great fit for 327 Federal revolver owners who want a full-power hollow point for personal defense, trail carry or small game, and for shooters who appreciate published velocities from real-world guns.
Buy the Buffalo Bore 327 Federal 100gr JHP at MAG5 Firearms
MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the Buffalo Bore 327 Federal 100gr JHP online and we will ship it to you where state and local law allow, or browse our full selection of ammunition for more handgun loads. For factory details, visit Buffalo Bore Ammunition.






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