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When you're heading into the field after serious game or need dependable protection in remote areas, this load delivers what lighter 10mm rounds simply can't match. The 230 grain hardcast bullet is the heaviest offering you'll find in the 10mm, built to penetrate through soft tissue, heavy bone, and hide with exceptional efficiency. This isn't a round designed by committee or cut for mass appeal, it's purpose-built for hunters who know they need deep, straight-line penetration.
Double Tap uses 21 Brinell hardness lead to cast these bullets, which means they hold their shape and don't deform on impact the way softer cast lead might. That consistency translates directly to reliable performance downrange. The wide flat nose design cuts a large, clean hole without flight deviation or deflection, and every round exits the factory with a gas check crimped to the bullet base. This small piece of metal is your insurance policy against barrel fouling. It seals off high temperature gases that would otherwise melt lead and cause smearing inside your barrel, keeping your firearm cleaner over time.
Every round starts as a hand-loaded cartridge, not a mass-produced item stamped out by the thousands. Powder charges are held within plus or minus one tenth of a grain, which is tight enough to matter when you're hunting. The ammunition goes through a rigid inspection process before it leaves the factory. You get new production brass cases loaded with centerfire primers, all packaged 20 rounds per box.
You're looking at 1120 feet per second and 641 foot pounds of energy out of a standard barrel. From a Glock 20, expect closer to 1008 fps and 519 foot pounds. This load works best for hunting medium to large game in the 50 to 300 pound range, including whitetail deer and feral hogs, though plenty use it as an all-around woods round for protection against larger threats. The ballistic coefficient sits at .199, which keeps the bullet stable through the air and resistant to wind deflection.
The 230 grain weight is the heaviest factory 10mm load available, delivering superior penetration through bone and heavy tissue. It's built for hunters who need one round to handle heavy game, not a compromise load. The heavier bullet maintains velocity better at distance and resists deflection off hard material.
A gas check is a small metal cup crimped to the bullet base that prevents hot powder gases from melting the lead. Without it, those gases escape around the bullet and cause lead smearing and fouling in your barrel. It keeps your gun running cleaner and extends barrel life, especially important with hardcast ammunition fired at higher velocities.
Yes, this load works well for whitetail deer and similar sized game. The 230 grain hardcast bullet has the penetration to pass through regardless of shot placement, which gives you a clean, ethical harvest. It's equally suited for feral hogs and other medium to large game where deep, reliable penetration matters.
Brinell hardness measures how resistant the lead is to deformation. At 21 Brinell, this bullet is hard enough to hold its shape through bone without mushrooming or breaking apart, but not so hard that it bounces off targets. This balance delivers maximum penetration while maintaining a wide wound channel.
| Caliber/Gauge | 10mm |
|---|---|
| Case Material | Brass |
| Cost per Round | 1.15 |
| Grains | 230Gr |
| Manufacturer | |
| Manufacturer Part Number | 10MM230HC |
| Model | |
| Product Type | Hard Cast |
| Shipping Weight | 0.96 |
| Units per Box | 20 |
| UPC | 091037282170 |
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