Lindcott Armory Compare / .243 Winchester vs .257 Roberts
Cartridge comparison
.243 Winchester vs .257 Roberts
.243 Winchester is faster (3,850 vs 3,150 fps); .257 Roberts carries more energy (2,700 vs 2,000 ft·lb).
.243 Winchester →Representative trajectory · 100 yd zero0–1000 yd Open in Ballistic Compare ↗
.257 Roberts →Representative trajectory · 100 yd zero0–800 yd Open in Ballistic Compare ↗
| .243 Winchester | .257 Roberts | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1955 | 1934 |
| Bullet ⌀ | 0.243″ | 0.257″ |
| Case length | 2.045″ | 2.233″ |
| Velocity | 2,900–3,850 fps | 2,800–3,150 fps |
| Energy | 1,400–2,000 ft·lb | 2,200–2,700 ft·lb |
| Max pressure | 60,000 psi | 54,000 psi |
| Recoil | 8–12 ft·lb | 8–12 ft·lb |
| Eff. range | 500 yd | 500 yd |
FAQs
- Is .243 Winchester faster than .257 Roberts?
- .243 Winchester is faster — up to 3,850 fps versus 3,150 fps.
- Does .243 Winchester hit harder than .257 Roberts?
- .257 Roberts carries more muzzle energy (2,700 vs 2,000 ft·lb).