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Common uses: Self-Defense, Target, Tactical
The representative cataloged load on this page — a 230 gr bullet — leaves the muzzle at 835 fps with 356 ft-lb of energy. Loads cataloged on this page range from 160 to 230 grains; velocity and energy vary by load.
21,000 psi, per the SAAMI standard cited in the sources on this page.
.45 ACP is primarily a defensive and target cartridge, and typical defensive engagements happen inside 25 yards. There is no single "effective range" — the trajectory table shows how its velocity and energy fall off with distance.
| Type | pistol (centerfire) |
| Typical load | 230gr Winchester USA FMJ |
| Muzzle velocity | 835 fps |
| Muzzle energy | 356 ft-lb |
| Stored G1 ballistic coefficient (source unresolved) | 0.157 |
| Case length | 22.8 mm |
| Overall length | 32.4 mm |
| Listed maximum pressure | 21000 PSI |
| Common twist rate | 1:16" |
| Range (yd) | Velocity (fps) | Energy (ft-lb) | Drop (in) |
|---|---|---|---|
| 0 | 835 | 356 | -1.5 |
| 50 | 798 | 326 | -1.8 |
| 100 | 765 | 299 | -15.7 |
| 150 | 733 | 275 | -44.5 |
The listed uses do not identify an explicit big-game hunting role, so deer- and elk-sized energy references aren't shown. Evaluate the named load using its available source data and any displayed trajectory, then verify the result for the listed target, competition, defensive, tactical, or duty context.
Published BCs depend on a reference drag model and stated velocity conditions. A source review does not independently measure a BC. Understanding BC sources
Manufacturer item Q4170 · Sources checked
Winchester lists Q4170 as 230 gr full metal jacket at 835 fps and 356 ft-lb from a 5-inch test barrel.
Still unresolved: The reviewed catalog does not establish the stored G1 .157 or sectional density .162. The earlier plausibility claim is not primary-source verification.
Your barrel, ammunition lot, and conditions will differ — always verify against the manufacturer's data and your own firearm.
The .45 ACP is prized for its reputation as a heavy, low-pressure cartridge that delivers substantial stopping power with a large-diameter bullet at modest velocity. A standard 230-grain load stays subsonic, producing a heavy push rather than a sharp snap, which many shooters find controllable and which pairs naturally with suppressors. Its main tradeoffs are limited magazine capacity in most pistols, a looping trajectory that drops off past close range, and more felt recoil than smaller service rounds. It remains a mainstay for self-defense, concealed carry, and target shooting, and it retains a devoted following among 1911 enthusiasts and those who favor big-bore handguns.
Designed by John Moses Browning around 1904-1905, the .45 ACP (Automatic Colt Pistol) grew out of U.S. Army pistol trials that sought a hard-hitting cartridge after the .38 Long Colt was judged inadequate during the Philippine-American War. It was adopted in 1911 alongside Browning's Colt M1911 pistol and went on to serve as the standard U.S. military handgun cartridge for more than seven decades. Its long tenure in the M1911 platform cemented it as one of the most enduring and iconic American handgun cartridges.
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