rifle · semi-auto | United States
| Caliber | .308 Winchester |
|---|---|
| Barrel | 457 mm (18.0 in) |
| Weight | 3674 g (129.6 oz, manufacturer figure) |
| Capacity | 20 rounds |
| Action | semi-auto |
| Manufacturer | Kel-Tec |
| Country | United States |
The Kel-Tec RFB is a semi-auto rifle chambered in .308 Winchester, built by Kel-Tec in United States. From its 457 mm (18.0 in) barrel, Fiocchi 308 Win FMJ (150 gr FMJ) leaves the muzzle at about 2801 fps (854 m/s), adjusted from the 610 mm test barrel the figure was measured in. Zeroed at 100 m, the bullet drops 128 mm by 200 m with 2276 J (1679 ft-lb) left. At the muzzle that is enough to defeat Drywall, Plate Glass, Pine Wood, Brick and Kevlar NIJ IIIA, and not enough for AR500 Steel. It feeds from a 20-round magazine.
Computed by the BallisticEngine engine for this barrel length, zeroed at 100 m, 15 °C, sea level, no wind.
| Distance | Drop | Velocity | Energy | Time |
|---|---|---|---|---|
| 100 m | 0 mm | 766 m/s | 2853 J | 0.12 s |
| 200 m | -128 mm | 684 m/s | 2276 J | 0.26 s |
| 300 m | -466 mm | 608 m/s | 1794 J | 0.42 s |
| 500 m | -2023 mm | 471 m/s | 1079 J | 0.79 s |
Against a semi-infinite block of each material, with Fiocchi 308 Win FMJ at the muzzle. The verdict compares the depth reached against a realistic barrier thickness.
| Material | Verdict | Depth |
|---|---|---|
| Drywall (½") | ✓ Full penetration | 461 mm |
| Plate Glass (¼") | ✓ Full penetration | 37 mm |
| Pine Wood (1") | ✓ Full penetration | 434 mm |
| Brick (4") | ✓ Full penetration | 245 mm |
| AR500 Steel (⅜") | ✗ Stopped | 9 mm |
| Kevlar NIJ IIIA | ✓ Full penetration | 16 mm |
| Load | Mass | Velocity | Type | BC (G1) |
|---|---|---|---|---|
| Aguila Aguila .308 Winchester 150gr FMJ | 150 gr | 2820 fps (860 m/s) | FMJ | 0.314 |
| Aguila Aguila .308 Winchester 150gr SP | 150 gr | 2820 fps (860 m/s) | SP | 0.314 |
| Aguila Aguila .308 Winchester 168gr BTHP Match | 168 gr | 2650 fps (808 m/s) | HP | 0.462 |
| Black Hills Black Hills .308 Winchester 168gr Barnes TSX | 168 gr | 2650 fps (808 m/s) | SP | 0.420 |
| Black Hills Black Hills .308 Winchester 168gr Match ELD-M | 168 gr | 2650 fps (808 m/s) | BTHP | 0.465 |
| Black Hills Black Hills .308 Winchester 168gr Match OTM | 168 gr | 2650 fps (808 m/s) | BTHP | 0.462 |
| Black Hills Black Hills .308 Winchester 175gr Match OTM | 175 gr | 2600 fps (793 m/s) | BTHP | 0.505 |
| Black Hills Black Hills .308 Winchester 185gr Match Juggernaut | 185 gr | 2550 fps (777 m/s) | BTHP | 0.530 |
| Buffalo Bore Buffalo Bore .308 Winchester 150gr Spitzer SP | 150 gr | 2950 fps (899 m/s) | SP | 0.340 |
| Buffalo Bore Buffalo Bore .308 Winchester 168gr Barnes TTSX | 168 gr | 2775 fps (846 m/s) | SP | 0.450 |
| Buffalo Bore Buffalo Bore .308 Winchester 180gr Spitzer SP | 180 gr | 2750 fps (838 m/s) | SP | 0.430 |
| Federal Federal American Eagle Rifle, 308 Win, 150 Grain, Full Metal Jacket Boat-Tail, 2820 fps | 150 gr | 2820 fps (860 m/s) | FMJ | 0.414 |
| Federal Federal Berger Hybrid Hunter, 308 Win, 168 Grain, Berger, 2700 fps | 168 gr | 2700 fps (823 m/s) | BTHP | 0.446 |
| Federal Federal ELD-X, 308 Win, 178 Grain, ELD-X, 2610 fps | 178 gr | 2610 fps (796 m/s) | SP | 0.552 |
| Federal Federal Federal Subsonic, 308 Win, 190 Grain, Fusion Tipped, 1000 fps | 190 gr | 1000 fps (305 m/s) | SP | 0.494 |
| Federal Federal Federal Subsonic, 308 Win., 205 Grain, Target Hollow Point, 1000 fps | 205 gr | 1000 fps (305 m/s) | HP | 0.480 |
| Federal Federal Federal Training, 308 Win, 150 Grain, Full Metal Jacket Boat-Tail, 2820 fps | 150 gr | 2820 fps (860 m/s) | FMJ | 0.414 |
| Federal Federal Fusion Rifle, 308 Win, 150 Grain, Fusion Soft Point, 2820 fps | 150 gr | 2820 fps (860 m/s) | SP | 0.414 |
| Federal Federal Fusion Rifle, 308 Win, 165 Grain, Fusion Soft Point, 2700 fps | 165 gr | 2700 fps (823 m/s) | SP | 0.446 |
| Federal Federal Fusion Rifle, 308 Win, 180 Grain, Fusion Soft Point, 2600 fps | 180 gr | 2600 fps (793 m/s) | SP | 0.552 |
168 loads available in .308 Winchester; 20 shown.