Load Specifications
Bullet:.257 | 98gr | Hasler ARIETE
Bullet Manufacturer:Hasler
Bullet Weight:98 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:1:9.0
Load data in caliber .25-06 Rem. with .257 | 98gr | Hasler ARIETE bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Hodgdon Superformance.
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.
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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 2015 | <<locked>> | 82% | 58,305 psi | 89% | 3077 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 58,160 psi | 89% | 3104 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,275 psi | 86% | 3107 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,748 psi | 76% | 3068 fps | 98% |
| Accurate 4064 | <<locked>> | 88% | 58,436 psi | 90% | 3159 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,680 psi | 85% | 3202 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 57,522 psi | 88% | 3189 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 58,827 psi | 90% | 3189 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,971 psi | 87% | 3238 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,173 psi | 86% | 3133 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 58,044 psi | 89% | 3110 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 58,204 psi | 89% | 3323 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,028 psi | 86% | 3166 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,086 psi | 86% | 3182 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,246 psi | 86% | 3261 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,682 psi | 88% | 3294 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,028 psi | 86% | 3219 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,673 psi | 72% | 3097 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,915 psi | 63% | 2982 fps | 96.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,577 psi | 82% | 3294 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,957 psi | 89% | 3205 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 56,898 psi | 87% | 3179 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 56,304 psi | 86% | 3150 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,754 psi | 88% | 3117 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,391 psi | 86% | 3163 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,406 psi | 88% | 3192 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 57,928 psi | 89% | 3255 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 92% | 57,798 psi | 89% | 3212 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 84% | 58,131 psi | 89% | 3199 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,449 psi | 86% | 3179 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 58,769 psi | 90% | 3238 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 58,856 psi | 90% | 3294 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 55% | 2005 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,840 psi | 86% | 3146 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 58,856 psi | 90% | 3182 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 58,160 psi | 89% | 3173 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,711 psi | 88% | 3153 fps | 98.4% |
| IMR 4350 | <<locked>> | 96% | 57,290 psi | 88% | 3179 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 92% | 58,247 psi | 89% | 3182 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 55,883 psi | 86% | 3189 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 57,508 psi | 88% | 3215 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,173 psi | 86% | 3133 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 58,291 psi | 89% | 3166 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,565 psi | 87% | 3114 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 58,291 psi | 89% | 3166 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,856 psi | 89% | 3173 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 55,738 psi | 85% | 3159 fps | 98.4% |
| Norma 201 | <<locked>> | 84% | 56,173 psi | 86% | 3130 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,043 psi | 87% | 3130 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,317 psi | 85% | 3166 fps | 100% |
| Norma 204 | <<locked>> | 96% | 58,334 psi | 89% | 3235 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 52,692 psi | 81% | 3241 fps | 97.8% |
| Norma URP | <<locked>> | 96% | 57,957 psi | 89% | 3241 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 56,289 psi | 86% | 3192 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,855 psi | 87% | 3238 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 56,666 psi | 87% | 3153 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,521 psi | 87% | 3169 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 56% | 2054 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,479 psi | 88% | 3173 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,305 psi | 88% | 3261 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,348 psi | 88% | 3291 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,288 psi | 85% | 3219 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 58,160 psi | 89% | 3310 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 57,058 psi | 87% | 3114 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,782 psi | 87% | 3127 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,739 psi | 87% | 3169 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 58,697 psi | 90% | 3205 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,158 psi | 85% | 3205 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 92% | 56,304 psi | 86% | 3150 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,856 psi | 89% | 3173 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 58,291 psi | 89% | 3166 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 58,291 psi | 89% | 3166 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,738 psi | 85% | 3159 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 58,755 psi | 90% | 3235 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,259 psi | 85% | 3130 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,318 psi | 86% | 3159 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,159 psi | 88% | 3061 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 58,262 psi | 89% | 3061 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 58,262 psi | 89% | 3127 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,665 psi | 84% | 3199 fps | 96.7% |
| Somchem S335 | <<locked>> | 84% | 56,782 psi | 87% | 3058 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 59,045 psi | 90% | 3179 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,869 psi | 87% | 3169 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 57,000 psi | 87% | 3245 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,956 psi | 86% | 3179 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 84% | 57,580 psi | 88% | 3045 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,130 psi | 88% | 3091 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,508 psi | 88% | 3104 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 58,334 psi | 89% | 3140 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,652 psi | 87% | 3182 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 56,724 psi | 87% | 3133 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,970 psi | 86% | 3100 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,724 psi | 85% | 3182 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,127 psi | 80% | 3179 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,594 psi | 87% | 3146 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,609 psi | 88% | 3186 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 58,305 psi | 89% | 3258 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,148 psi | 65% | 3127 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,449 psi | 86% | 3166 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,344 psi | 80% | 3107 fps | 96% |
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 2015 | <<locked>> | 80% | 54,621 psi | 84% | 3025 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,877 psi | 73% | 2949 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,267 psi | 71% | 2927 fps | 95.3% |
| Accurate 3100 | <<locked>> | 94% | 40,379 psi | 62% | 2884 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 45,266 psi | 69% | 2949 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,837 psi | 52% | 2753 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 50,647 psi | 78% | 3074 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 42,946 psi | 66% | 2907 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 96% | 49,864 psi | 76% | 3107 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,692 psi | 81% | 3077 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,186 psi | 83% | 3054 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,021 psi | 72% | 3123 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,221 psi | 66% | 2933 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,195 psi | 71% | 3005 fps | 99.1% |
| Alliant Reloder-16 | 43 gr | 80% | 33,591 psi | 51% | 2769 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,869 psi | 58% | 2910 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 96% | 49,168 psi | 75% | 3094 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,588 psi | 45% | 2667 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 98% | 38,363 psi | 59% | 2920 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 90% | 37,014 psi | 57% | 2933 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,502 psi | 77% | 3081 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 43,366 psi | 66% | 2943 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 46,717 psi | 72% | 2972 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,273 psi | 83% | 3061 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,620 psi | 81% | 3104 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,976 psi | 67% | 2946 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 86% | 44,295 psi | 68% | 3002 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 47,732 psi | 73% | 3028 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 51,169 psi | 78% | 3087 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,009 psi | 48% | 2661 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,761 psi | 73% | 3058 fps | 99.9% |
| Hodgdon Superformance | 52.6 gr | 86% | 43,801 psi | 67% | 3012 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 41% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,066 psi | 75% | 3031 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 51,706 psi | 79% | 3077 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,136 psi | 69% | 2946 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,732 psi | 73% | 2972 fps | 96.5% |
| IMR 4350 | <<locked>> | 88% | 44,396 psi | 68% | 2943 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,339 psi | 69% | 2949 fps | 95.8% |
| IMR 4831 | <<locked>> | 82% | 34,983 psi | 54% | 2769 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 47,384 psi | 73% | 3038 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 52,692 psi | 81% | 3077 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,821 psi | 78% | 3051 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,893 psi | 76% | 2999 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 45,310 psi | 69% | 2949 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 39,987 psi | 61% | 2835 fps | 95.8% |
| Lovex S070 | <<locked>> | 86% | 43,149 psi | 66% | 2920 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 49,676 psi | 76% | 3022 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,096 psi | 77% | 3022 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,571 psi | 70% | 2992 fps | 99.3% |
| Norma 204 | <<locked>> | 92% | 50,734 psi | 78% | 3104 fps | 95.4% |
| Norma MRP | <<locked>> | 96% | 45,759 psi | 70% | 3104 fps | 96% |
| Norma URP | <<locked>> | 80% | 34,069 psi | 52% | 2759 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 45,774 psi | 70% | 3009 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 40,553 psi | 62% | 2923 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 53,011 psi | 81% | 3091 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,040 psi | 81% | 3114 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,311 psi | 42% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,106 psi | 68% | 2927 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,792 psi | 76% | 3130 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,248 psi | 62% | 2982 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 36,172 psi | 55% | 2835 fps | 95.6% |
| ReloadSwiss RS 70 | 49.4 gr | 84% | 38,232 psi | 59% | 2907 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 53,548 psi | 82% | 3058 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,369 psi | 73% | 2969 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 40,901 psi | 63% | 2884 fps | 99% |
| Rottweil R 904 | <<locked>> | 98% | 54,940 psi | 84% | 3143 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 96% | 48,167 psi | 74% | 3077 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 86% | 46,717 psi | 72% | 2972 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 39,987 psi | 61% | 2835 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,821 psi | 78% | 3051 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,310 psi | 69% | 2949 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 43,149 psi | 66% | 2920 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,959 psi | 64% | 2936 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,808 psi | 79% | 3071 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,342 psi | 76% | 3041 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,401 psi | 77% | 2959 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,409 psi | 65% | 2812 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,742 psi | 64% | 2828 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 47,718 psi | 73% | 3071 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 50,372 psi | 77% | 2959 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,387 psi | 79% | 3061 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 41,350 psi | 63% | 2887 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 30,545 psi | 47% | 2703 fps | 97.3% |
| Somchem S385 | <<locked>> | 94% | 45,643 psi | 70% | 2992 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 50,879 psi | 78% | 2946 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,050 psi | 72% | 2940 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,718 psi | 73% | 2953 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,523 psi | 61% | 2815 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 35,288 psi | 54% | 2759 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 53,113 psi | 81% | 3077 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,035 psi | 71% | 2940 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,954 psi | 54% | 2759 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 86% | 32,416 psi | 50% | 2753 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,940 psi | 54% | 2730 fps | 97.8% |
| Winchester 748 | <<locked>> | 80% | 53,650 psi | 82% | 3127 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 44,295 psi | 68% | 3002 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 30,037 psi | 46% | 2759 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,066 psi | 75% | 3041 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,834 psi | 75% | 3041 fps | 95% |
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 100 powders for .25-06 Rem. loaded with the .257 | 98gr | Hasler ARIETE. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,323 fps; across all powders the maximum-charge window runs from 2,005 fps to 3,323 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 98.0 gr projectile in 0.257" calls for a 1:9.0 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, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for .25-06 Rem. with the .257 | 98gr | Hasler ARIETE 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.