Solid Copper vs. Lead-Core Hollow Points: What's the Difference?
Most defensive 9mm on the shelf is a lead-core hollow point: a lead core inside a thin copper jacket. The VX9 is one solid piece of copper. Here's what that difference changes, and where it matters.
How a lead-core hollow point is built
A jacketed hollow point is two parts. Lead makes up most of the weight because it's heavy and soft, and the copper jacket holds it together and lets the nose open. When it works, it works well. The weak spot is where the two metals meet. Hit something hard first, like glass or sheet steel, and the jacket can peel away from the core, or the core can break up. What reaches the target behind the barrier can be a fraction of the bullet you fired. Bonded hollow points fuse the jacket to the core to fight this, but petals can still shear off. And every piece that breaks away keeps moving. Those fragments can still hit people who were never the target.
How a solid copper bullet is built
The VX9 is machined from a single piece of copper in Amarillo, Texas. There's no lead core and no jacket, so there's nothing to separate. The nose is a hollow point, and we cut slits down the side of the body. In soft tissue the nose opens into petals that stay attached to the bullet. Against a hard barrier the nose folds in and the bullet drives through in one piece.
What that looks like in testing
Weight retention is where the difference shows. In FBI-protocol testing out of a Glock 17, the VX9 kept 99.7% of its weight across bare gel and all five barriers: heavy clothing, steel, wallboard, plywood and auto glass. It expanded every time and averaged about 16 inches of penetration. The barrier-by-barrier numbers are in our post on what barrier-blind means.
The trade-offs
Copper is lighter than lead, so a copper bullet is longer than a lead-core bullet of the same weight. That's why the VX9 is 96 grains instead of the 124 or 147 grains common in lead-core 9mm. It leaves the barrel faster, around 1,270 fps from a Glock 17, and it gets its penetration from staying in one piece instead of from extra weight. Copper also costs more, and machining each bullet takes longer than forming one from lead. That shows up in the price.
Who it's for
We built the VX9 for law enforcement, military and everyday carry, where you don't get to pick what's between you and the threat. We've also run it side by side against Federal HST 124-grain. That data sheet is available on request, wins and losses included.
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