Load Specifications
Load data in caliber .25-06 Rem. with .257 | 100gr | Peregrine Glider GRM bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Winchester 760.
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% | 56,608 psi | 87% | 3028 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,014 psi | 86% | 3051 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 58,015 psi | 89% | 3127 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 58,827 psi | 90% | 3120 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,688 psi | 73% | 3009 fps | 97.7% |
| Accurate 4064 | <<locked>> | 88% | 56,492 psi | 87% | 3107 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 57,812 psi | 89% | 3212 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 56,463 psi | 87% | 3146 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,711 psi | 88% | 3150 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,724 psi | 85% | 3192 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 58,842 psi | 90% | 3146 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,420 psi | 86% | 3061 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,000 psi | 87% | 3278 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 58,059 psi | 89% | 3169 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 58,421 psi | 90% | 3192 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 58,639 psi | 90% | 3274 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,159 psi | 86% | 3245 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,389 psi | 83% | 3169 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,223 psi | 69% | 3045 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,610 psi | 61% | 2930 fps | 96.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,779 psi | 79% | 3238 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,478 psi | 87% | 3159 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 55,332 psi | 85% | 3130 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 58,479 psi | 90% | 3159 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,434 psi | 86% | 3071 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 58,740 psi | 90% | 3176 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,043 psi | 86% | 3146 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 56,507 psi | 87% | 3205 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 92% | 56,391 psi | 86% | 3163 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 84% | 57,072 psi | 87% | 3156 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 58,885 psi | 90% | 3189 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,174 psi | 88% | 3189 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,232 psi | 88% | 3245 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,810 psi | 55% | 1978 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 58,291 psi | 89% | 3159 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 57,261 psi | 88% | 3136 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,927 psi | 87% | 3130 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,550 psi | 87% | 3107 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 55,970 psi | 86% | 3133 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,913 psi | 87% | 3136 fps | 98.3% |
| IMR 4831 | <<locked>> | 98% | 58,073 psi | 89% | 3199 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 56,463 psi | 87% | 3173 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 58,842 psi | 90% | 3146 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,724 psi | 87% | 3117 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 59,001 psi | 90% | 3123 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,811 psi | 87% | 3120 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,623 psi | 87% | 3130 fps | 99.2% |
| Lovex S070 | <<locked>> | 96% | 57,841 psi | 89% | 3169 fps | 98.7% |
| Norma 201 | <<locked>> | 86% | 58,320 psi | 89% | 3136 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,579 psi | 85% | 3084 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,609 psi | 88% | 3179 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,029 psi | 87% | 3189 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 50,981 psi | 78% | 3189 fps | 97.5% |
| Norma URP | <<locked>> | 96% | 56,376 psi | 86% | 3192 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 58,813 psi | 90% | 3205 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,477 psi | 85% | 3189 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 55,535 psi | 85% | 3110 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,245 psi | 85% | 3123 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,172 psi | 55% | 2021 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,289 psi | 86% | 3130 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,869 psi | 86% | 3212 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,840 psi | 86% | 3245 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 57,885 psi | 89% | 3235 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,840 psi | 87% | 3268 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 84% | 58,987 psi | 90% | 3117 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,958 psi | 90% | 3136 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,201 psi | 85% | 3123 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,406 psi | 88% | 3159 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,417 psi | 82% | 3150 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 94% | 58,479 psi | 90% | 3159 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,623 psi | 87% | 3130 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,724 psi | 87% | 3117 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,811 psi | 87% | 3120 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,841 psi | 89% | 3169 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,217 psi | 88% | 3186 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,986 psi | 89% | 3146 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 58,726 psi | 90% | 3173 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,086 psi | 86% | 3022 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,029 psi | 87% | 3018 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,739 psi | 87% | 3077 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,953 psi | 81% | 3146 fps | 96.5% |
| Somchem S335 | <<locked>> | 86% | 59,016 psi | 90% | 3061 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,522 psi | 88% | 3130 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 58,885 psi | 90% | 3173 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,347 psi | 85% | 3199 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,128 psi | 83% | 3127 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 84% | 56,536 psi | 87% | 3002 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,550 psi | 85% | 3045 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,188 psi | 86% | 3061 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 57,072 psi | 87% | 3097 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 59,016 psi | 90% | 3192 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 55,666 psi | 85% | 3091 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 58,334 psi | 89% | 3110 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,914 psi | 89% | 3192 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,372 psi | 77% | 3127 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,390 psi | 85% | 3104 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,246 psi | 86% | 3143 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,811 psi | 87% | 3212 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,553 psi | 62% | 3068 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 58,914 psi | 90% | 3179 fps | 100% |
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% | 53,272 psi | 82% | 2982 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,021 psi | 71% | 2900 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 54,230 psi | 83% | 3071 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,962 psi | 69% | 2877 fps | 95% |
| Accurate 3100 | <<locked>> | 94% | 38,580 psi | 59% | 2825 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,540 psi | 67% | 2897 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 34,911 psi | 53% | 2766 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 49,501 psi | 76% | 3031 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 41,930 psi | 64% | 2861 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 96% | 48,530 psi | 74% | 3058 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,663 psi | 79% | 3035 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,895 psi | 81% | 3012 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,774 psi | 70% | 3074 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,003 psi | 64% | 2887 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,005 psi | 69% | 2959 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 82% | 34,635 psi | 53% | 2782 fps | 95.8% |
| Alliant Reloder-17 | 45.5 gr | 80% | 36,550 psi | 56% | 2854 fps | 98.2% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,848 psi | 73% | 3048 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,356 psi | 47% | 2674 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,028 psi | 57% | 2864 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,549 psi | 54% | 2874 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,284 psi | 76% | 3035 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 41,974 psi | 64% | 2894 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 45,368 psi | 70% | 2923 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,939 psi | 81% | 3015 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,155 psi | 78% | 3054 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,482 psi | 65% | 2894 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 43,033 psi | 66% | 2953 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 49,719 psi | 76% | 3045 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 50,024 psi | 77% | 3041 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,849 psi | 46% | 2608 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,427 psi | 71% | 3012 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 45,716 psi | 70% | 3031 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 41% | 1772 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,080 psi | 74% | 2992 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 50,082 psi | 77% | 3028 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,063 psi | 68% | 2900 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,528 psi | 71% | 2927 fps | 96.3% |
| IMR 4350 | <<locked>> | 90% | 46,224 psi | 71% | 2956 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,150 psi | 68% | 2900 fps | 95.6% |
| IMR 4831 | <<locked>> | 82% | 33,765 psi | 52% | 2720 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 46,195 psi | 71% | 2992 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 51,663 psi | 79% | 3035 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,182 psi | 75% | 3002 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,849 psi | 75% | 2956 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 44,048 psi | 67% | 2900 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 38,566 psi | 59% | 2779 fps | 95.5% |
| Lovex S070 | <<locked>> | 86% | 41,785 psi | 64% | 2871 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 48,341 psi | 74% | 2976 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,907 psi | 75% | 2979 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,396 psi | 68% | 2946 fps | 99.2% |
| Norma 204 | <<locked>> | 92% | 49,342 psi | 76% | 3054 fps | 95.1% |
| Norma MRP | <<locked>> | 96% | 44,063 psi | 68% | 3045 fps | 95.6% |
| Norma URP | <<locked>> | 82% | 35,099 psi | 54% | 2766 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 44,469 psi | 68% | 2959 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 39,320 psi | 60% | 2874 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 51,793 psi | 79% | 3045 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,764 psi | 79% | 3068 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,934 psi | 41% | 1814 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,801 psi | 66% | 2877 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,283 psi | 74% | 3081 fps | 99.4% |
| ReloadSwiss RS 60 | 45.5 gr | 80% | 38,957 psi | 60% | 2930 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,780 psi | 53% | 2779 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 36,854 psi | 56% | 2851 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 52,011 psi | 80% | 3009 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,745 psi | 70% | 2917 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,233 psi | 60% | 2828 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 98% | 53,650 psi | 82% | 3094 fps | 95% |
| Rottweil R 905 | <<locked>> | 98% | 50,111 psi | 77% | 3091 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 86% | 45,368 psi | 70% | 2923 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,566 psi | 59% | 2779 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,182 psi | 75% | 3002 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,048 psi | 67% | 2900 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 41,785 psi | 64% | 2871 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,625 psi | 62% | 2884 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,401 psi | 77% | 3022 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,037 psi | 74% | 2992 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,269 psi | 75% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,292 psi | 63% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,511 psi | 67% | 2844 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,647 psi | 76% | 3084 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,197 psi | 75% | 2917 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,125 psi | 77% | 3012 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 40,074 psi | 61% | 2838 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 29,327 psi | 45% | 2651 fps | 96.9% |
| Somchem S385 | <<locked>> | 94% | 44,106 psi | 68% | 2940 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 49,777 psi | 76% | 2907 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,687 psi | 70% | 2894 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,267 psi | 71% | 2904 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,058 psi | 58% | 2762 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 34,142 psi | 52% | 2710 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 52,040 psi | 80% | 3035 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,643 psi | 68% | 2890 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,969 psi | 55% | 2766 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 88% | 33,228 psi | 51% | 2756 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,808 psi | 52% | 2684 fps | 97.5% |
| Winchester 748 | <<locked>> | 80% | 52,286 psi | 80% | 3081 fps | 100% |
| Winchester 760 | 47.9 gr | 86% | 43,033 psi | 66% | 2953 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,660 psi | 44% | 2694 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,037 psi | 74% | 3002 fps | 99.8% |
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 118 powders for .25-06 Rem. loaded with the .257 | 100gr | Peregrine Glider GRM. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,278 fps; across all powders the maximum-charge window runs from 1,978 fps to 3,278 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 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 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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. Alliant Reloder-17, ReloadSwiss RS 60, Winchester 760 rank at the top here: for .25-06 Rem. with the .257 | 100gr | Peregrine Glider GRM they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.