Warning: Bullet selections are specific, and loads are not valid with substitutions of different bullets of the same weight. Variations in bullet length will alter net case capacity, pressure and velocity. Primer selection is specific and primer types are not interchangeable. These are maximum loads in my firearms and may be excessive in others. All loads should be reduced by 5% as a starting point for development where cartridges have greater than 40 grains in capacity and 10% for cartridges with less than 40 grain capacity following safe handloading practices as represented in established mainstream reloading manuals. Presentation of these loads does not constitute a solicitation for their use, nor a recommendation.
| Cartridge |
275 Rigby* (7x57mm) |
| Firearm | Ruger Hawkeye International |
| Barrel Length | 18.5″ |
| Min – Max Case Length | 2.235″ +0.0″/-0.020″ |
| Min – Max Cartridge Overall Length | 2.850″ – 3.065″ |
| Primer | CCI 250 LRM |
| Bullet Diameter | 0.2845″ +0.0″/-0.0030″ |
| Reloading Dies | Redding FL |
| 61kpsi, exceeds SAAMI MAP 51kpsi. | |
| Bullet | Bullet Weight Grains |
H2O Grains Capacity |
C.O.L.” | Powder Type |
Charge Grains |
MV FPS |
ME Ft-Lbs |
| Sierra Pro-Hunter SPFB | 120 |
56.3 |
2.985 |
Re 16 |
54.0 |
3202 |
2736 |
| Sierra Pro-Hunter SPFB | 120 | 56.3 | 2.985 | Varget | 50.9 | 3104 | 2567 |
| Sierra Pro-Hunter SPFB | 120 | 56.3 | 2.985 | CFE 223 |
54.5 | 3163 | 2666 |
| Sierra Pro-Hunter SPFB | 120 |
56.3 | 2.985 |
H 414 | 55.5 | 3176 | 2688 |
| Berger VDL Hunting BTHP | 140 |
52.8 |
3.065 |
Reloder 16 |
49.5 | 2859 | 2542 |
| Berger VDL Hunting BTHP | 140 |
52.8 | 3.065 |
H414 | 51.0 | 2842 |
2511 |
| Berger VDL Hunting BTHP | 140 |
52.8 | 3.065 |
Norma URP |
50.0 | 2822 | 2475 |
| Berger VDL Hunting BTHP | 140 |
52.8 | 3.065 |
RS Hunter |
52.5 |
2836 |
2500 |
| Remington Core-Lokt PPFB | 140 |
53.9 |
3.000 |
Re 17 | 51.5 | 2882 | 2583 |
| Remington Core-Lokt PPFB | 140 | 53.9 | 3.000 | Norma 204 |
52.5 | 2800 | 2438 |
| Remington Core-Lokt PPFB | 140 | 53.9 | 3.000 | RS Hunter |
53.0 | 2828 | 2486 |
| Remington Core-Lokt PPFB | 140 |
53.9 | 3.000 |
Win 760 |
51.6 | 2842 | 2510 |
| Nosler CT BTPT | 150 | 51.8 | 3.060 | Reloder 17 |
49.5 | 2789 | 2592 |
| Nosler CT BTPT | 150 | 51.8 | 3.060 | Norma URP |
49.0 |
2752 | 2522 |
| Nosler CT BTPT | 150 | 51.8 | 3.060 | RS Hunter |
51.0 | 2742 | 2505 |
| Nosler CT BTPT | 150 | 51.8 | 3.060 | Win 760 |
49.5 | 2746 | 2511 |
| Winchester PP |
150 |
52.2 |
2.885 |
Reloder 17 |
49.0 | 2780 | 2574 |
| Winchester PP |
150 |
52.2 |
2.885 |
H414 | 49.0 | 2766 | 2548 |
| Winchester PP |
150 |
52.2 |
2.885 |
RS Hunter |
50.5 | 2734 |
2489 |
| Winchester PP |
150 |
52.2 |
2.885 |
Win 760 |
49.0 |
2736 |
2494 |
| Speer Hot Cor SPFB | 160 |
51.8 |
3.050 |
Re 16 | 46.0 | 2664 | 2206 |
| Speer Hot Cor SPFB | 160 |
51.8 |
3.050 |
Re 17 | 48.0 | 2675 | 2543 |
| Speer Hot Cor SPFB | 160 | 51.8 |
3.050 | H414 | 48.5 | 2635 | 2467 |
| Speer Hot Cor SPFB | 160 | 51.8 |
3.050 | Win 760 | 46.0 | 2674 |
2223 |
| Remington Core-Lokt PPFB | 175 | 50.8 |
3.015 | Re 16 |
44.5 |
2505 |
2438 |
| Remington Core-Lokt PPFB | 175 | 50.8 | 3.015 | Re 17 |
46.0 |
2535 |
2497 |
| Remington Core-Lokt PPFB | 175 | 50.8 | 3.015 | H414 | 46.0 | 2499 | 2426 |
| Remington Core-Lokt PPFB | 175 | 50.8 | 3.015 | IMR 7828 SSC | 55.0 | 2513 | 2453 |
Email Notification