Winchester Bigbore .45 Colt 250gr JSP Ammo Ballistics
Brass Case • JSP
Winchester Bigbore .45 Colt 250gr JSP Ammo Ballistics
Brass Case • JSP
Trajectory @ 25yd Zero
| Range | Velocity | Energy | Drop |
|---|---|---|---|
| Muzzle | 845 fps | 396 ft-lb | — |
| 5 yds | 840 fps | 392 ft-lb | -0.1" |
| 10 yds | 836 fps | 388 ft-lb | +0.1" |
| 15 yds | 832 fps | 384 ft-lb | +0.2" |
| 20 yds | 828 fps | 381 ft-lb | +0.2" |
| 25 yds ⊕ | 824 fps | 377 ft-lb | +0.0" |
| 30 yds | 820 fps | 374 ft-lb | -0.3" |
| 35 yds | 816 fps | 370 ft-lb | -0.7" |
| 40 yds | 813 fps | 367 ft-lb | -1.2" |
| 45 yds | 809 fps | 363 ft-lb | -1.9" |
| 50 yds | 805 fps | 360 ft-lb | -2.7" |
| 55 yds | 801 fps | 357 ft-lb | -3.6" |
| 60 yds | 798 fps | 353 ft-lb | -4.7" |
| 65 yds | 794 fps | 350 ft-lb | -5.9" |
| 70 yds | 790 fps | 347 ft-lb | -7.3" |
| 75 yds | 787 fps | 344 ft-lb | -8.7" |
| 80 yds | 783 fps | 341 ft-lb | -10.4" |
| 85 yds | 780 fps | 338 ft-lb | -12.1" |
| 90 yds | 776 fps | 335 ft-lb | -14.0" |
| 95 yds | 773 fps | 332 ft-lb | -16.1" |
| 100 yds | 769 fps | 329 ft-lb | -18.3" |
Product Overview
Winchester's Bigbore .45 Colt sends a 250gr jacketed soft point at 845 fps, producing 396 ft-lbs of muzzle energy. That's a meaningful step up from standard-pressure plinking loads like the Winchester Super-X LFN at 750 fps and 312 ft-lbs. The JSP bullet expands on contact while retaining enough weight for decent penetration. This is still a standard-pressure load, so it's safe in all .45 Colt revolvers, but it sits near the top of what you can get without going +P.
The jacketed soft point design gives this load a real edge over lead-only bullets. On impact, the exposed lead tip mushrooms while the jacket controls expansion rate, preventing the bullet from breaking apart. This makes it far more effective on game or in defensive situations than a plain lead flat nose. The Ammo Inc 250gr JHP runs at similar velocity (842 fps, 394 ft-lbs) but with a hollow point that opens faster. The Bigbore's JSP splits the difference between controlled expansion and deep penetration.
Hunters carrying a .45 Colt revolver for deer, hogs, or javelina at close range will get the most from this load. It hits hard enough for broadside shots inside 50 yards on medium game. It also works as a woods-carry defensive round against coyotes, feral dogs, or similar threats. For lever-action rifle owners, the 250gr JSP at these velocities is a competent brush gun load for whitetail. If you need more power for larger or tougher animals, the DoubleTap +P loads push into entirely different energy territory, but they require a heavy-frame revolver.
- JSP bullet expands reliably while retaining weight for adequate penetration on medium game
- 396 ft-lbs of energy is near the top of standard-pressure .45 Colt performance
- Safe in all .45 Colt revolvers, including older single-actions and the Taurus Judge
- Works in both revolvers and lever-action rifles chambered in .45 Colt
- 845 fps limits effective hunting range to about 50 yards on medium game
- Not a +P load, so energy falls short for larger animals like elk or bear
- More expensive than lead-bullet practice loads for the same 250gr weight
- Expansion at these lower velocities can be inconsistent compared to faster hollow points
All Winchester Bigbore .45 Colt 250gr JSP Ammo Prices
| DEALER | QTY | PRICE | SHIPPING | TOTAL | PRICE/RD |
|---|---|---|---|---|---|
| Sentry Ammo | 400 | $563.58 | $13.99 | $577.57 | $1.44 |
| Fast Ammo | 400 | $540.67 | $49.99 | $590.66 | $1.48 |
| Black Basin Outdoors | 400 | $592.76 | $0.00 | $592.76 | $1.48 |
| Sentry Ammo | 200 | $284.22 | $13.99 | $298.21 | $1.49 |
| Fast Ammo | 200 | $279.77 | $36.99 | $316.76 | $1.58 |
Firearms Chambered in .45 Colt
Looking for a firearm that shoots this ammo? Browse our selection of .45 Colt firearms.
Browse .45 Colt Handguns →