Load Specifications
Load data in caliber .25-06 Rem. with .257 | 100gr | Speer Boat-Tail bullet and 96 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 Alliant Reloder-26.
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 2495 | <<locked>> | 84% | 58,001 psi | 89% | 3081 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,492 psi | 85% | 3084 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,838 psi | 82% | 3120 fps | 99% |
| Accurate 4064 | <<locked>> | 86% | 58,247 psi | 89% | 3136 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,840 psi | 86% | 3189 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 59,059 psi | 90% | 3333 fps | 97.1% |
| ADI AR 2206H | <<locked>> | 82% | 57,116 psi | 88% | 3166 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 58,494 psi | 90% | 3173 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,811 psi | 87% | 3222 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 58,059 psi | 89% | 3304 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,709 psi | 85% | 3140 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,709 psi | 85% | 3159 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,289 psi | 86% | 3248 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,783 psi | 89% | 3271 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,028 psi | 86% | 3205 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,432 psi | 82% | 3205 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,270 psi | 77% | 3140 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,976 psi | 67% | 3045 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 58,581 psi | 90% | 3353 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,363 psi | 88% | 3182 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 56,507 psi | 87% | 3153 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,432 psi | 82% | 3205 fps | 97.1% |
| Bofors RP7 | <<locked>> | 90% | 55,840 psi | 86% | 3130 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 86% | 57,130 psi | 88% | 3173 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 57,841 psi | 89% | 3238 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 90% | 57,653 psi | 88% | 3196 fps | 97.9% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 58,711 psi | 90% | 3219 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 82% | 57,783 psi | 89% | 3179 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,811 psi | 87% | 3166 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 58,334 psi | 89% | 3215 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 58,798 psi | 90% | 3278 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 55% | 2008 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 58,885 psi | 90% | 3176 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 58,436 psi | 90% | 3156 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,624 psi | 88% | 3150 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,913 psi | 87% | 3127 fps | 98.7% |
| IMR 4350 | <<locked>> | 94% | 56,971 psi | 87% | 3163 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,682 psi | 88% | 3163 fps | 98.8% |
| IMR 4831 | <<locked>> | 94% | 56,246 psi | 86% | 3176 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 57,203 psi | 88% | 3192 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 57,653 psi | 88% | 3136 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,767 psi | 85% | 3087 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,812 psi | 89% | 3143 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,725 psi | 88% | 3156 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 55,680 psi | 85% | 3143 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,396 psi | 68% | 2949 fps | 97.3% |
| Norma 201 | <<locked>> | 82% | 55,883 psi | 86% | 3110 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,391 psi | 86% | 3100 fps | 100% |
| Norma 203B | <<locked>> | 86% | 58,842 psi | 90% | 3205 fps | 100% |
| Norma 204 | <<locked>> | 94% | 58,247 psi | 89% | 3222 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 57,072 psi | 87% | 3301 fps | 98.9% |
| Norma URP | <<locked>> | 94% | 57,928 psi | 89% | 3225 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,086 psi | 86% | 3169 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 56,985 psi | 87% | 3222 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,840 psi | 56% | 2054 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,014 psi | 87% | 3153 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,811 psi | 87% | 3232 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,246 psi | 88% | 3268 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,651 psi | 85% | 3205 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 58,059 psi | 89% | 3294 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 56,434 psi | 86% | 3107 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,681 psi | 87% | 3150 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 58,450 psi | 90% | 3189 fps | 96.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 59,001 psi | 90% | 3251 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 55,840 psi | 86% | 3130 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,725 psi | 88% | 3156 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,653 psi | 88% | 3136 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,812 psi | 89% | 3143 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,680 psi | 85% | 3143 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 58,407 psi | 89% | 3212 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 58,566 psi | 90% | 3169 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,506 psi | 85% | 3130 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,420 psi | 86% | 3035 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,609 psi | 88% | 3035 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,725 psi | 88% | 3107 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 58,494 psi | 90% | 3248 fps | 98% |
| Somchem S335 | <<locked>> | 82% | 56,362 psi | 86% | 3031 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 58,334 psi | 89% | 3153 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,391 psi | 86% | 3146 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 57,566 psi | 88% | 3228 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,985 psi | 86% | 3166 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 82% | 56,927 psi | 87% | 3015 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,695 psi | 87% | 3064 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,101 psi | 87% | 3081 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,914 psi | 89% | 3117 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,637 psi | 87% | 3166 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,837 psi | 79% | 3077 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 84% | 55,419 psi | 85% | 3074 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,651 psi | 85% | 3166 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,246 psi | 86% | 3225 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,334 psi | 88% | 3284 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,492 psi | 87% | 3127 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 58,175 psi | 89% | 3241 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,513 psi | 70% | 3189 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,956 psi | 86% | 3143 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,478 psi | 87% | 3159 fps | 97.4% |
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% | 50,734 psi | 78% | 2976 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,602 psi | 74% | 2963 fps | 96.5% |
| Accurate 3100 | <<locked>> | 90% | 37,927 psi | 58% | 2808 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 48,037 psi | 74% | 2976 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,506 psi | 56% | 2805 fps | 96.6% |
| Accurate High Country | <<locked>> | 96% | 51,198 psi | 78% | 3199 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 53,432 psi | 82% | 3107 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,498 psi | 70% | 2943 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 49,676 psi | 76% | 3094 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,140 psi | 77% | 3166 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,963 psi | 70% | 2972 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,965 psi | 75% | 3041 fps | 99.6% |
| Alliant Reloder-16 | 44.9 gr | 80% | 35,621 psi | 55% | 2815 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,582 psi | 62% | 2956 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 92% | 46,224 psi | 71% | 3022 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,688 psi | 72% | 3074 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,791 psi | 46% | 2661 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 36,129 psi | 55% | 2848 fps | 95.1% |
| Alliant Reloder-26 | 53.3 gr | 86% | 34,621 psi | 53% | 2851 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,403 psi | 82% | 3117 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 46,166 psi | 71% | 2979 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 46,688 psi | 72% | 3074 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 43,395 psi | 66% | 2890 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 46,572 psi | 71% | 2986 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 82% | 41,263 psi | 63% | 2920 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 84% | 47,427 psi | 73% | 3012 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 98% | 54,665 psi | 84% | 3153 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 54,070 psi | 83% | 3117 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,156 psi | 51% | 2703 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,937 psi | 78% | 3094 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 43,627 psi | 67% | 2999 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,919 psi | 41% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,808 psi | 79% | 3064 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,795 psi | 84% | 3104 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,848 psi | 73% | 2982 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,198 psi | 77% | 3012 fps | 97.6% |
| IMR 4350 | <<locked>> | 86% | 44,164 psi | 68% | 2923 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,163 psi | 65% | 2867 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 35,114 psi | 54% | 2753 fps | 96.2% |
| IMR 4895 | <<locked>> | 80% | 50,256 psi | 77% | 3074 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 53,838 psi | 82% | 3077 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,518 psi | 80% | 3031 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,095 psi | 74% | 2982 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,610 psi | 61% | 2812 fps | 96.2% |
| Lovex S070 | <<locked>> | 82% | 40,495 psi | 62% | 2844 fps | 95.3% |
| Lovex S071 | <<locked>> | 96% | 39,117 psi | 60% | 2838 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 52,257 psi | 80% | 3048 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,026 psi | 81% | 3051 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,341 psi | 74% | 3028 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 47,268 psi | 72% | 3025 fps | 95% |
| Norma MRP | <<locked>> | 92% | 42,946 psi | 66% | 3028 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 36,332 psi | 56% | 2802 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 80% | 48,747 psi | 75% | 3045 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 37,797 psi | 58% | 2841 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 42% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,775 psi | 72% | 2969 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,910 psi | 81% | 3169 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,105 psi | 66% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,274 psi | 56% | 2818 fps | 96.2% |
| ReloadSwiss RS 70 | 49.1 gr | 80% | 35,375 psi | 54% | 2818 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 49,922 psi | 76% | 2999 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,424 psi | 67% | 2920 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 94% | 51,271 psi | 79% | 3068 fps | 95% |
| Rottweil R 905 | <<locked>> | 94% | 48,283 psi | 74% | 3064 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 82% | 43,395 psi | 66% | 2890 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,610 psi | 61% | 2812 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,838 psi | 82% | 3077 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,095 psi | 74% | 2982 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 40,495 psi | 62% | 2844 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,585 psi | 68% | 2972 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 54,781 psi | 84% | 3107 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,982 psi | 80% | 3071 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,982 psi | 81% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,773 psi | 69% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,582 psi | 64% | 2812 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 47,834 psi | 73% | 3058 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 52,808 psi | 81% | 2979 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 54,331 psi | 83% | 3091 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,772 psi | 67% | 2920 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 32,924 psi | 50% | 2753 fps | 98.6% |
| Somchem S385 | <<locked>> | 90% | 43,033 psi | 66% | 2927 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 53,519 psi | 82% | 2966 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,879 psi | 76% | 2966 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,198 psi | 77% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,814 psi | 64% | 2844 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 37,753 psi | 58% | 2805 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 96% | 45,295 psi | 69% | 2956 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 48,573 psi | 74% | 2963 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,304 psi | 57% | 2802 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 84% | 32,924 psi | 50% | 2746 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 98% | 53,461 psi | 82% | 3215 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,072 psi | 57% | 2769 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 41,524 psi | 64% | 2927 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 86% | 28,239 psi | 43% | 2684 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,040 psi | 80% | 3077 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,849 psi | 75% | 3028 fps | 95.7% |
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 111 powders for .25-06 Rem. loaded with the .257 | 100gr | Speer Boat-Tail. Alliant Reloder-26 delivers the highest muzzle velocity at 3,353 fps; across all powders the maximum-charge window runs from 2,008 fps to 3,353 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 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 1:11.5 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. ReloadSwiss RS 70, Alliant Reloder-16, Alliant Reloder-26 rank at the top here: for .25-06 Rem. with the .257 | 100gr | Speer Boat-Tail they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, Bofors RP30, Hodgdon H1000 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.