Hornady Handgun Hunter 10mm Auto 135gr MonoFlex — 500 Rounds

The Hornady Handgun Hunter 10mm is the dedicated handgun hunting load in the 10mm Auto category.

A 135-grain MonoFlex Flex Tip bullet at 1,315 fps and 518 ft-lbs, built specifically for hunters running semi-automatic pistols on deer, hogs, and medium game.

At $1.60 per round for 500 rounds, this is the only dedicated hunting bullet currently in the category — and the highest-velocity 10mm load here.

MonoFlex — A Hunting Bullet, Not a Defensive JHP

The MonoFlex in the Hornady Handgun Hunter 10mm is engineered for field hunting conditions, not urban defensive use. Three features distinguish it from conventional JHP designs:

Solid copper alloy construction. No lead core — the MonoFlex is a monolithic copper bullet with near-100% weight retention on penetration. Solid construction maintains bullet integrity through bone and heavy tissue, delivering the penetration depth that field hunting on game animals requires.

Elastomer Flex Tip. The hollow cavity of the MonoFlex contains an elastomer polymer insert. On impact, this insert compresses and then pushes outward, initiating petal expansion faster and more reliably than a standard hollow point that depends on hydraulic pressure alone. The elastomer also prevents clogging — a conventional hollow point can pack with material on entry and fail to expand; the elastomer prevents this.

California-compliant lead-free construction. The Hornady Handgun Hunter 10mm is entirely lead-free — no core, no jacket, no exposed lead. Valid for hunting in California’s condor range and similar lead-restricted hunting areas.

1,315 fps — The Fastest 10mm in This Category

At 135 grains and 1,315 fps, the Hornady Handgun Hunter 10mm is the highest-velocity 10mm load currently in this category. The lighter bullet delivers 518 ft-lbs of muzzle energy.

For comparison with the other 10mm loads here:

• Ammo Inc. Signature 180gr JHP: 1,195 fps, ~572 ft-lbs
• Speer Gold Dot 200gr HP: 1,100 fps, ~537 ft-lbs
• Hornady Handgun Hunter 135gr MonoFlex: 1,315 fps, 518 ft-lbs

The MonoFlex gives up some muzzle energy for flat trajectory and faster bullet at distance — the engineering choice for extended handgun hunting shots.

Specifications

• Caliber: 10mm Auto
• Bullet: 135 grain, MonoFlex Flex Tip (solid copper alloy, elastomer tip)
• Muzzle velocity: 1,315 fps
• Muzzle energy: 518 ft-lbs
• G1 BC: 0.101
• Application: Hunting, big game, medium game
• Lead free: Yes — California condor zone compliant
• Cartridge case: Brass, reloadable
• Primer: Centerfire
• Quantity: 500 rounds (25 × 20-round boxes)

Browse the 10mm ammunition category. Specifications are published by SAAMI and by Hornady directly. Safe storage guidance is available from the NSSF.

SHORT DESCRIPTION (above Add to Cart)

Hornady Handgun Hunter 10mm Auto. 135-grain MonoFlex Flex Tip — solid copper alloy, elastomer-assisted expansion, 95% weight retention. 1,315 fps, 518 ft-lbs. Lead-free, California condor zone compliant. Brass case, reloadable. Hornady SKU 91364. 500 rounds (25 × 20-round boxes). Dedicated hunting load — not for range training or defensive carry.

💬 Before You Go — Handgun Hunting With 10mm?

Taken game with a 10mm pistol? Leave a review with the species, shot distance, and how the MonoFlex performed on impact. Handgun hunting field reports are rare and genuinely useful to the next hunter making the same load decision. And if you came looking for a 10mm hunting load we don’t carry, tell us. 🎯

Please purchase and use ammunition responsibly and in accordance with all federal, state and local laws. Ammunition cannot be shipped to all jurisdictions — verify legal shipment to your address before ordering. Buyers must be at least 21 years of age for handgun ammunition. Not for sale to prohibited persons. Verify state and local hunting regulations for handgun ammunition before field use.

Frequently Asked Questions

What is MonoFlex and how does it differ from standard JHP? MonoFlex is a solid copper alloy hunting bullet with an elastomer Flex Tip insert. A standard JHP relies on hydraulic pressure to open the hollow cavity. MonoFlex uses the elastomer to initiate expansion mechanically — more reliably across velocity extremes — and the solid copper construction prevents core-jacket separation on bone impact.

Is this suitable for deer? Yes — 135 grains at 1,315 fps with 518 ft-lbs and solid copper construction is adequate for deer at handgun hunting distances. Confirm your state’s regulations for handgun hunting cartridge requirements.

Is it lead-free? Yes — entirely solid copper alloy, no lead. Valid for California condor zone hunting and other lead-restricted hunting areas.

How does 135gr compare to 180gr or 200gr in this category? Lighter and faster. The MonoFlex 135gr reaches 1,315 fps vs 1,195 fps (Ammo Inc. 180gr) and 1,100 fps (Speer Gold Dot 200gr). It produces less muzzle energy (518 ft-lbs) than the heavier loads (~537–572 ft-lbs) but delivers a flatter trajectory. The MonoFlex solid copper construction compensates for the lighter weight through penetration depth.

Why does the spec table say “Match, Varmint, Target, Self Defense” for application? That application data is incorrect — copied from a different product. This is a hunting load. The correct application is Hunting / Big Game.

Can I reload the brass? Yes — standard brass, Boxer-primed.

How many rounds is 500? 25 × 20-round boxes.

What’s the per-round cost? $800 / 500 = $1.60 per round.