Load Specifications
Bullet Manufacturer:Swift
Bullet Weight:100 gr
Bullet Diameter:0.257"
Bullet Length:<<locked>>
Caliber:.25-06 Rem. load data
Case Length (l3):2.489"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:65.8 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,267 psi
Recommended Twist Rate:1:9.5
Load data in caliber .25-06 Rem. with .257 | 100gr | Swift Scirocco bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 56,130 psi | 86% | 3048 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,696 psi | 88% | 3110 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,300 psi | 79% | 3074 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 56,434 psi | 86% | 3104 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 57,392 psi | 88% | 3205 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 59,030 psi | 90% | 3189 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,695 psi | 87% | 3133 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 58,407 psi | 89% | 3238 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,667 psi | 88% | 3130 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,057 psi | 86% | 3264 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,261 psi | 88% | 3159 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,638 psi | 88% | 3182 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 57,841 psi | 89% | 3264 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,593 psi | 85% | 3235 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,551 psi | 88% | 3222 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,039 psi | 78% | 3153 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,109 psi | 74% | 3097 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,032 psi | 64% | 2992 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,622 psi | 85% | 3304 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,637 psi | 85% | 3146 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 58,581 psi | 90% | 3179 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,039 psi | 78% | 3153 fps | 96.3% |
| Bofors RP7 | <<locked>> | 92% | 57,740 psi | 88% | 3150 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 58,871 psi | 90% | 3107 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,972 psi | 89% | 3163 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 58,972 psi | 90% | 3196 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 55,854 psi | 86% | 3196 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 90% | 55,680 psi | 85% | 3153 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 82% | 56,101 psi | 86% | 3143 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 58,117 psi | 89% | 3179 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,376 psi | 86% | 3176 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,202 psi | 86% | 3228 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 55% | 1991 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,985 psi | 87% | 3143 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,434 psi | 86% | 3123 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,043 psi | 86% | 3117 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,564 psi | 85% | 3097 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 58,726 psi | 90% | 3182 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,782 psi | 85% | 3123 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 57,464 psi | 88% | 3189 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 55,521 psi | 85% | 3159 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 57,667 psi | 88% | 3130 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,912 psi | 86% | 3107 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,682 psi | 88% | 3107 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,202 psi | 86% | 3110 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,782 psi | 85% | 3120 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 57,188 psi | 88% | 3163 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,525 psi | 65% | 2907 fps | 96.6% |
| Norma 201 | <<locked>> | 84% | 57,711 psi | 88% | 3127 fps | 100% |
| Norma 202 | <<locked>> | 84% | 58,262 psi | 89% | 3123 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,884 psi | 87% | 3166 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,043 psi | 86% | 3176 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 54,563 psi | 84% | 3251 fps | 98.4% |
| Norma URP | <<locked>> | 94% | 55,840 psi | 86% | 3186 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 57,870 psi | 89% | 3189 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 58,450 psi | 90% | 3241 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 58,073 psi | 89% | 3156 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 58,001 psi | 89% | 3169 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,753 psi | 56% | 2041 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 58,929 psi | 90% | 3173 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 58,726 psi | 90% | 3255 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,969 psi | 84% | 3232 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,276 psi | 88% | 3225 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,883 psi | 86% | 3255 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 58,349 psi | 89% | 3107 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 58,320 psi | 89% | 3127 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 58,407 psi | 89% | 3173 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,347 psi | 86% | 3146 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,782 psi | 87% | 3209 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 57,740 psi | 88% | 3150 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,782 psi | 85% | 3120 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,912 psi | 86% | 3107 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,202 psi | 86% | 3110 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,188 psi | 88% | 3163 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,318 psi | 86% | 3176 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,797 psi | 87% | 3130 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,493 psi | 88% | 3153 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 58,697 psi | 90% | 3058 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,057 psi | 86% | 3009 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,927 psi | 86% | 3071 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,275 psi | 86% | 3202 fps | 97.3% |
| Somchem S335 | <<locked>> | 84% | 58,233 psi | 89% | 3051 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,594 psi | 87% | 3120 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 58,436 psi | 90% | 3166 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 58,813 psi | 90% | 3245 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,479 psi | 88% | 3182 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 55,477 psi | 85% | 2989 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 58,523 psi | 90% | 3084 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,448 psi | 85% | 3051 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,159 psi | 86% | 3087 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 58,276 psi | 89% | 3182 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,574 psi | 76% | 3028 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 82% | 58,247 psi | 89% | 3130 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 57,421 psi | 88% | 3097 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,261 psi | 88% | 3182 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,809 psi | 82% | 3182 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 58,378 psi | 89% | 3146 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 58,914 psi | 90% | 3182 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,144 psi | 86% | 3202 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,729 psi | 67% | 3146 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,682 psi | 88% | 3159 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,099 psi | 83% | 3114 fps | 96.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 49,168 psi | 75% | 2946 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,224 psi | 72% | 2927 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 38,986 psi | 60% | 2831 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 46,543 psi | 71% | 2946 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,143 psi | 54% | 2766 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 52,069 psi | 80% | 3077 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 44,237 psi | 68% | 2910 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 94% | 47,979 psi | 74% | 3051 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 54,172 psi | 83% | 3077 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,530 psi | 74% | 3130 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,353 psi | 68% | 2933 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,630 psi | 73% | 3012 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,490 psi | 53% | 2776 fps | 95.9% |
| Alliant Reloder-17 | 46.9 gr | 80% | 39,131 psi | 60% | 2920 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,398 psi | 73% | 3041 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,776 psi | 73% | 3091 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,589 psi | 47% | 2680 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,014 psi | 57% | 2864 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 35,607 psi | 55% | 2874 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,953 psi | 80% | 3084 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 44,788 psi | 69% | 2946 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 47,776 psi | 73% | 3091 fps | 95.4% |
| Bofors RP7 | <<locked>> | 84% | 44,788 psi | 69% | 2913 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 55,361 psi | 85% | 3058 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 54,099 psi | 83% | 3104 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 45,049 psi | 69% | 2949 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 42,554 psi | 65% | 2940 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 86% | 48,820 psi | 75% | 3031 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 52,678 psi | 81% | 3087 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,966 psi | 49% | 2667 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,313 psi | 76% | 3061 fps | 100% |
| Hodgdon Superformance | 53.2 gr | 86% | 45,092 psi | 69% | 3022 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,021 psi | 41% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,212 psi | 77% | 3031 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,069 psi | 81% | 3071 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,514 psi | 71% | 2949 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,747 psi | 75% | 2972 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 45,672 psi | 70% | 2949 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,482 psi | 67% | 2887 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 33,910 psi | 52% | 2717 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 48,863 psi | 75% | 3041 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 54,172 psi | 83% | 3077 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,083 psi | 80% | 3045 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,198 psi | 78% | 2999 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,717 psi | 72% | 2953 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,421 psi | 59% | 2776 fps | 95.6% |
| Lovex S070 | <<locked>> | 84% | 41,727 psi | 64% | 2867 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 39,711 psi | 61% | 2848 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 50,850 psi | 78% | 3018 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,300 psi | 79% | 3015 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,007 psi | 72% | 2995 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 48,849 psi | 75% | 3048 fps | 95.2% |
| Norma MRP | <<locked>> | 94% | 44,106 psi | 68% | 3048 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 35,099 psi | 54% | 2766 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 47,224 psi | 72% | 3012 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 38,957 psi | 60% | 2867 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 54,360 psi | 83% | 3094 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 54,215 psi | 83% | 3110 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 42% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,368 psi | 70% | 2933 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,111 psi | 78% | 3133 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,582 psi | 64% | 2986 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,853 psi | 53% | 2779 fps | 95.4% |
| ReloadSwiss RS 70 | 48.8 gr | 82% | 36,738 psi | 56% | 2848 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 54,766 psi | 84% | 3051 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 48,486 psi | 74% | 2966 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,061 psi | 64% | 2884 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 52,808 psi | 81% | 3084 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 46,412 psi | 71% | 3022 fps | 95% |
| Rottweil R 907 | <<locked>> | 84% | 44,788 psi | 69% | 2913 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,421 psi | 59% | 2776 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,083 psi | 80% | 3045 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,717 psi | 72% | 2953 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 41,727 psi | 64% | 2867 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,091 psi | 66% | 2936 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,953 psi | 81% | 3068 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,459 psi | 77% | 3038 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,517 psi | 79% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,453 psi | 67% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,931 psi | 66% | 2831 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 49,182 psi | 75% | 3077 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 51,503 psi | 79% | 2953 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,808 psi | 81% | 3058 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 42,438 psi | 65% | 2884 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 31,502 psi | 48% | 2710 fps | 98% |
| Somchem S385 | <<locked>> | 92% | 44,048 psi | 67% | 2940 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 52,040 psi | 80% | 2940 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,312 psi | 74% | 2936 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,820 psi | 75% | 2946 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,553 psi | 62% | 2812 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,535 psi | 56% | 2769 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 46,383 psi | 71% | 2969 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 54,621 psi | 84% | 3077 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 47,079 psi | 72% | 2933 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,955 psi | 55% | 2766 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 84% | 31,459 psi | 48% | 2703 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,998 psi | 55% | 2736 fps | 98.4% |
| Winchester 748 | <<locked>> | 80% | 55,259 psi | 85% | 3127 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 42,801 psi | 66% | 2946 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,921 psi | 44% | 2707 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,502 psi | 77% | 3045 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,488 psi | 77% | 3051 fps | 95.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 102 powders for .25-06 Rem. loaded with the .257 | 100gr | Swift Scirocco. Alliant Reloder-26 delivers the highest muzzle velocity at 3,304 fps; across all powders the maximum-charge window runs from 1,991 fps to 3,304 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (450 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.257" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .25-06 Rem. with the .257 | 100gr | Swift Scirocco they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.