Description
Buffalo Bore's 45 Auto Rim +P with 200-grain jacketed hollow point bullets is a serious defensive load built specifically for shooters who run 45 Auto Rim revolvers. This +P rated cartridge delivers performance equivalent to 45 ACP +P+ ammo while staying safe in modern and post-war 45 Auto Rim revolvers. The round ships at 1200 fps with 639 ft-lbs of energy, giving you the heavy-for-caliber bullet weight paired with substantial velocity.
Flash-Suppressed Powder Design
The flash-suppressed powder formulation is worth its weight in gold if you ever need to use this ammunition in a defensive situation. Most civilian defensive incidents happen in low light conditions, and this powder keeps your muzzle signature down without blinding yourself when the shot has to happen. Buffalo Bore builds this into their rounds because they understand real-world use.
Built on Quality Starline Brass
You get high-quality Starline brass that's boxer-primed and reloadable if you work up your own loads down the line. The ammunition is new production and non-corrosive, so you can shoot it and clean your revolver at your pace. The 200-grain JHP bullet design delivers controlled expansion and deep penetration for defensive applications.
Who Should Shoot This
This load is purpose-built for revolver platforms chambered in 45 Auto Rim. If you run a vintage M1917 Colt or Smith & Wesson revolver, modern S&W revolvers, or any other 45 Auto Rim-chambered gun in normal operating condition, Buffalo Bore's proven quality and accurate published ballistics make this a legitimate choice for carry or home defense where you want serious stopping capability without unnecessary pressure.
Key Specifications
- Caliber: 45 Auto Rim
- Bullet Weight: 200 Grains
- Bullet Type: Jacketed Hollow Point (JHP)
- Muzzle Velocity: 1200 fps
- Muzzle Energy: 639 ft-lbs
- Pressure Rating: +P
- Case Material: Brass
- Primer Type: Boxer
- Reloadable: Yes
- Manufacturer: Buffalo Bore Ammunition
- Manufacturer Part Number: 32B20
- UPC: 651815032023
What’s Included
- 20 rounds of 45 Auto Rim +P ammunition
Frequently Asked Questions
Will this 45 Auto Rim +P load work in older M1917 revolvers?
Yes. Buffalo Bore states that these rounds are robust yet compatible with modern and post-war 45 ACP revolvers. The +P rating is designed to work safely in properly maintained firearms of that era. Verify your specific revolver is in normal operating condition before shooting any +P ammunition.
How does this compare to 45 ACP +P ammunition?
This 45 Auto Rim +P load is ballistically equivalent to 45 ACP +P+ ammo, also known as 45 Super. The key difference is the rimmed case design, which eliminates the need for moon clips in 45 Auto Rim revolvers. Performance is comparable, but the cartridge is specifically designed for revolver platforms.
Why is the flash-suppressed powder important?
Over 95% of civilian defensive situations occur in low light conditions. Flash-suppressed powder keeps your muzzle signature reduced so you won't blind yourself if you have to use the gun in darkness or indoors. This is one reason Buffalo Bore includes this feature in their Personal Defense line.
Can I reload these cartridges after firing?
Yes. The ammunition uses boxer-primed, reloadable brass cases, so you can reload them if you handload ammunition. This makes it a good choice for people who work up their own loads and want quality, new production brass to build from.





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