Underwood Ammo ammunition in .45 Winchester Magnum (brand part no. 438) is built for hunters and woods-carry shooters who need heavy penetration from a revolver. Underwood Ammo backs this load with the quality control shooters expect from a name they already trust. At the heart of this load is the 230 gr bullet, matched to the .45 Winchester Magnum platform shooters already run. In our handgun ammunition lineup, this is the Underwood Ammo load built for that job.

Key Specifications

• The caliber is .45 Winchester Magnum, a proven big-game cartridge with decades of field results behind it.
• The bullet weighs 230 gr, sized for the terminal performance this load is built around.
• Muzzle velocity is rated at approximately 1600 fps, for authoritative energy on target at practical ranges.
• Muzzle energy is rated at approximately 1307 ft-lbs, a useful gauge of the knockdown power this load delivers at the muzzle.
• Each box holds 20 rounds, enough to work with before needing to reorder.
• Cases ship 10 boxes to a case, a useful case size for stocking a range or defensive supply.
• This is a centerfire cartridge, ignited by a replaceable primer rather than a rimfire priming ring.
• Underwood loads this jacketed hollow point to a higher velocity than mass-market ammunition, a hallmark of the brand’s boutique defensive and hunting lines.

Frequently Asked Questions

How many rounds come in a box? Each box holds 20 rounds of .45 Winchester Magnum.

What platform does this .45 Winchester Magnum load run in? This is standard .45 Winchester Magnum ammunition, built to run in any firearm chambered for the cartridge.

How fast does this .45 Winchester Magnum load run? It’s rated at approximately 1600 fps at the muzzle, giving a sense of the energy and trajectory to expect.

Buy the Underwood Ammo .45 Winchester Magnum 230 gr, 20-Round Box

Grab a case if you shoot it regularly, or a box to see how it patterns and cycles through your gun first. Order from our Lubbock, Texas gun shop and it ships fast to your door.