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10mm (.401) 220gr Flat Point Thick Plate
10mm (.401) 220gr Flat Point Thick Plate
Berry’s 220 grain bullet in 10mm delivers the performance reloaders need for full power loads. Each bullet starts with a swaged lead core that receives complete copper electroplating to its final weight. This thick plated construction handles higher muzzle velocity demands while eliminating lead exposure for indoor range safety. The flat point nose design provides controlled terminal performance and predictable behavior on target.
**THIS IS NOT LOADED AMMUNITION**
**UNABLE TO SHIP THE PRODUCT TO THE STATE OF MASSACHUSETTS**
- Cartridge Name 10mm
- Cartridge O.A.L.1.250"
- Max Velocity1500 fps
- Bullet OAL.716"
- Load data for our Superior Plated Bullets® can be found in any manual or on any powder manufacturer’s website.
- Cast or jacketed data with the same grain weight and profile will work with our bullets.
- You can use a taper or a roll crimp.
- Don’t over crimp the brass after seating. This causes bullet core separation, leading to increased copper fouling and accuracy issues.
- Don’t exceed the recommended maximum velocities listed. This creates bullet core separation and accuracy issues.
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The Legacy of 10mm Auto
The 10mm Auto cartridge originated from a collaboration between firearms expert Jeff Cooper and Swedish ammunition manufacturer Norma in 1983. Cooper envisioned a semi-auto cartridge that could match revolver power while offering higher capacity. The result was a 10mm bullet that delivered deep penetration and impressive terminal performance.
The FBI adopted the 10mm in 1989, seeking improved stopping power. However, the cartridge’s stout recoil proved challenging for some shooters. Today, 10mm Auto enjoys renewed popularity among those who appreciate its full power potential:
- Self-defense: Superior penetration and energy transfer
- Hunting: Capable of taking medium and dangerous game
- Woods carry: Popular protection choice in bear country
Platforms like the Glock 20 and various 1911 configurations chamber this powerful cartridge. Shooters running hotter loads should verify their recoil spring weight handles the increased slide velocity.
10mm Performance Characteristics
Specifications:
- C.O.A.L.: 1.250″
- Max Velocity: 1500 fps
- Bullet OAL: .716″
The 220 grain projectile sits at the heavier end of common 10mm bullet weights. This added mass maintains momentum better than lighter options, resulting in straight penetration through barriers. The weight also opens up subsonic load development for suppressor users.
Berry’s thick plated construction handles velocities up to 1500 fps without separation. Compared to hard cast lead, the copper plating reduces barrel fouling and eliminates lead exposure.
The Bullet-Making Process at Berry’s
- Swaged Lead Core Every bullet begins with a lead core swaged under high pressure for uniform density and consistent accuracy.
- Thick Copper Electroplating The swaged core is electroplated with copper to its final weight, fully encapsulating the lead and eliminating exposure. The thick plated construction provides a stronger bond than standard plating.
- Re-Striking for Precision After plating, each bullet undergoes re-striking to refine dimensions and create the flat point profile.
- Quality Inspection Every batch receives inspection for weight consistency, diameter accuracy, and plating integrity.
The result is a cleaner alternative to hard cast bullets that handles higher velocities than standard plated options.
Why Choose Berry’s Bullets?
Berry’s has manufactured superior plated bullets for over 60 years. Our thick plated 10mm bullets give reloaders the construction needed for full power loads without jacketed bullet prices.
Compared to hard cast lead, Berry’s plated bullets run cleaner with less fouling and no lead exposure. For 10mm shooters who demand performance from their handloads, Berry’s delivers consistent quality batch after batch.
Get Everything You Need for Shooting & Reloading at Berry’s
- Superior Plated Bullets
- Reloading Accessories
- Gun Storage Solutions
- Ammo Storage Solutions
- Shooting Bench and Rest