Wilson Combat 9mm +P 115gr Maximum Expansion Ammo

Description

Wilson Combat loaded this 115-grain round with Lehigh Defense Maximum Expansion bullets, which use a completely different expansion method than traditional hollow points. The cavernous hollow points are designed to expand through hydraulic energy when contacting fluid-based mediums like tissue, but they skip expansion on dry materials like drywall, bone, and barriers. That controlled expansion process means the bullet expands to its maximum diameter and stays there instead of mushrooming back on itself the way conventional bullets do.

Wilson Combat LA9115ME Specifications and Terminal Performance

The +P loading pairs with Lehigh's Maximum Expansion technology to deliver the wound channel performance Wilson Combat prioritizes for defensive use. At 1100 fps muzzle velocity and 309 ft-lbs of energy from a standard 5-inch test barrel, this round offers solid ballistic numbers for a 115-grain 9mm load. The brass casing is reloadable, so if you run through enough rounds to accumulate brass, you've got options down the road.

Why This Rounds Differs From Standard Defensive Ammo

Most defensive ammunition focuses on achieving maximum penetration, but Lehigh Defense's approach limits penetration through wide expansion, which reduces the risk of over-penetration when it matters most. The petals maintain their expanded diameter throughout the wound channel instead of collapsing back down like a traditional jacketed hollow point. This is why Wilson Combat specifically chose this bullet design for a dedicated defensive load rather than relying on standard options.

Loaded for 1911 Reliability

Wilson loads all their 9mm pistol ammunition to maximum overall length for optimized feeding in their 1911-platform guns. If your pistol's chamber isn't reamed to proper SAAMI specifications, this could potentially cause issues, so verify your firearm's specs before running +P ammunition through it.