The Buffalo Bore Heavy 10mm Auto 200-grain Full Metal Jacket Flat Nose (part no. 21A20) is a full-power handgun load built by Buffalo Bore for shooters who bought a 10mm specifically to get more performance out of it than a watered-down factory round. The flat-nose FMJ profile drives a wide, straight wound channel and penetrates deep rather than expanding, a field-proven design for backcountry carry against dangerous game. Buffalo Bore built its reputation loading 10mm Auto to the pressure the cartridge was originally designed for, rather than the reduced-power loads most factory ammunition settled into. It’s a strong pick for hikers, hunters, and shooters who carry a 10mm as backup protection in bear country.

Key Specifications

• Chambered in 10mm Auto, loaded to full power rather than the reduced pressure common in mainstream factory ammunition.
• Loaded with a 200-grain bullet for heavy energy transfer and deep penetration.
• Uses a full metal jacket flat nose profile that penetrates straight rather than expanding.
• Brass-cased for reliable function and reloading.
• Sold in 20-round boxes.
• Runs about $1.79 per round at full retail for a full-power, field-proven load.

Frequently Asked Questions

Why choose this over a standard 10mm load? Buffalo Bore loads this round to full power rather than the reduced pressure common in mainstream 10mm ammunition, giving it more energy and penetration.

Does the flat-nose bullet expand? No, the full metal jacket flat nose is built to penetrate deep and straight rather than mushroom.

How many rounds are in a box? Each box holds 20 rounds, with 12 boxes available per case.

Buy the Buffalo Bore Heavy 10mm Auto Ammo

A 10mm carried for backcountry protection should hit as hard as the cartridge was designed to, and this Heavy load delivers on that. Stock up on handgun ammunition before your next trip. Order from our Lubbock, Texas gun shop and it ships fast to your door.