Load Specifications
Load data in caliber .25-06 Rem. with .257 | 100gr | Swift A-Frame bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon H414 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 2495 | <<locked>> | 84% | 57,101 psi | 87% | 3064 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 59,016 psi | 90% | 3136 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,924 psi | 81% | 3104 fps | 98.8% |
| Accurate 4064 | <<locked>> | 86% | 57,754 psi | 88% | 3127 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 58,885 psi | 90% | 3232 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 56,362 psi | 86% | 3150 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,769 psi | 89% | 3156 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,217 psi | 86% | 3209 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 58,537 psi | 90% | 3150 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,246 psi | 88% | 3287 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 58,421 psi | 90% | 3179 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 58,784 psi | 90% | 3205 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,564 psi | 85% | 3232 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,043 psi | 87% | 3258 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 59,045 psi | 90% | 3251 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,533 psi | 80% | 3186 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,676 psi | 76% | 3127 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,250 psi | 66% | 3025 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,595 psi | 88% | 3337 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,637 psi | 87% | 3166 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 56,057 psi | 86% | 3143 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,533 psi | 80% | 3186 fps | 96.8% |
| Bofors RP7 | <<locked>> | 92% | 59,045 psi | 90% | 3179 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 86% | 56,420 psi | 86% | 3156 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 57,174 psi | 88% | 3222 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 90% | 56,985 psi | 87% | 3182 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 82% | 56,971 psi | 87% | 3163 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,796 psi | 85% | 3150 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,580 psi | 88% | 3199 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,798 psi | 89% | 3258 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 55% | 2001 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 58,146 psi | 89% | 3163 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,885 psi | 89% | 3146 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,232 psi | 88% | 3140 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,579 psi | 87% | 3117 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 56,376 psi | 86% | 3150 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,087 psi | 87% | 3150 fps | 98.6% |
| IMR 4831 | <<locked>> | 94% | 55,216 psi | 85% | 3159 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 56,710 psi | 87% | 3179 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 58,537 psi | 90% | 3150 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 57,174 psi | 88% | 3127 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 58,798 psi | 90% | 3127 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,406 psi | 88% | 3133 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,058 psi | 87% | 3143 fps | 99.5% |
| Lovex S070 | <<locked>> | 94% | 58,494 psi | 90% | 3186 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,787 psi | 67% | 2936 fps | 97.1% |
| Norma 201 | <<locked>> | 84% | 58,595 psi | 90% | 3146 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,912 psi | 86% | 3094 fps | 100% |
| Norma 203B | <<locked>> | 86% | 58,030 psi | 89% | 3189 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,246 psi | 88% | 3202 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 56,101 psi | 86% | 3284 fps | 98.7% |
| Norma URP | <<locked>> | 94% | 57,232 psi | 88% | 3212 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,361 psi | 85% | 3156 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 56,057 psi | 86% | 3205 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,854 psi | 56% | 2051 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,347 psi | 86% | 3136 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,275 psi | 86% | 3222 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,420 psi | 86% | 3255 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 58,653 psi | 90% | 3248 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 57,450 psi | 88% | 3281 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 55,970 psi | 86% | 3097 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,898 psi | 86% | 3136 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,841 psi | 89% | 3176 fps | 96.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 58,421 psi | 90% | 3241 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 92% | 59,045 psi | 90% | 3179 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,058 psi | 87% | 3143 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,174 psi | 88% | 3127 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,406 psi | 88% | 3133 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 58,494 psi | 90% | 3186 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,696 psi | 88% | 3199 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,856 psi | 89% | 3153 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 58,552 psi | 90% | 3173 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,927 psi | 86% | 3025 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,855 psi | 87% | 3022 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,159 psi | 88% | 3094 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,899 psi | 89% | 3235 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 59,059 psi | 90% | 3068 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,638 psi | 88% | 3140 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,970 psi | 86% | 3133 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 56,463 psi | 87% | 3212 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 58,987 psi | 90% | 3212 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 82% | 56,434 psi | 86% | 3009 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,130 psi | 86% | 3054 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,652 psi | 87% | 3071 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,217 psi | 88% | 3104 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,622 psi | 85% | 3146 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,981 psi | 78% | 3058 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 86% | 58,450 psi | 90% | 3114 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 58,537 psi | 90% | 3205 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,506 psi | 85% | 3209 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,579 psi | 85% | 3110 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,464 psi | 88% | 3228 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,991 psi | 69% | 3173 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,245 psi | 85% | 3127 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,550 psi | 85% | 3143 fps | 97.1% |
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% | 50,227 psi | 77% | 2966 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,240 psi | 74% | 2949 fps | 96.3% |
| Accurate 3100 | <<locked>> | 90% | 37,318 psi | 57% | 2792 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 47,500 psi | 73% | 2966 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,013 psi | 55% | 2789 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 80% | 52,997 psi | 81% | 3094 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,078 psi | 69% | 2933 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 49,110 psi | 75% | 3077 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 55,071 psi | 84% | 3097 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,676 psi | 76% | 3153 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,513 psi | 70% | 2959 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,515 psi | 74% | 3028 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,230 psi | 54% | 2799 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,900 psi | 61% | 2940 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 48,544 psi | 74% | 3068 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 49,226 psi | 75% | 3123 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,312 psi | 45% | 2641 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,927 psi | 58% | 2894 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 86% | 34,098 psi | 52% | 2835 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,026 psi | 81% | 3107 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 45,687 psi | 70% | 2966 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 49,226 psi | 75% | 3123 fps | 96% |
| Bofors RP7 | <<locked>> | 82% | 43,018 psi | 66% | 2881 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 46,108 psi | 71% | 2972 fps | 98.5% |
| Hodgdon H414 | 48 gr | 82% | 40,857 psi | 63% | 2904 fps | 95% |
| Hodgdon H4350 | <<locked>> | 84% | 46,818 psi | 72% | 2995 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 53,563 psi | 82% | 3107 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,721 psi | 50% | 2690 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,169 psi | 77% | 3077 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 43,062 psi | 66% | 2982 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 41% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,358 psi | 79% | 3054 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,215 psi | 83% | 3094 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,369 psi | 73% | 2972 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,516 psi | 76% | 2992 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 43,816 psi | 67% | 2913 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,800 psi | 64% | 2854 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 34,679 psi | 53% | 2740 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 49,748 psi | 76% | 3064 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 55,071 psi | 84% | 3097 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 53,316 psi | 82% | 3068 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,040 psi | 80% | 3022 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,601 psi | 73% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,204 psi | 60% | 2799 fps | 96% |
| Lovex S070 | <<locked>> | 82% | 39,900 psi | 61% | 2831 fps | 95% |
| Lovex S071 | <<locked>> | 96% | 38,508 psi | 59% | 2822 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 51,793 psi | 79% | 3038 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,547 psi | 81% | 3041 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,863 psi | 73% | 3015 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 50,067 psi | 77% | 3074 fps | 95.7% |
| Norma MRP | <<locked>> | 92% | 42,134 psi | 65% | 3005 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 35,911 psi | 55% | 2785 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 80% | 48,312 psi | 74% | 3038 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 39,914 psi | 61% | 2890 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,528 psi | 42% | 1837 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,093 psi | 71% | 2953 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,417 psi | 80% | 3156 fps | 99.8% |
| ReloadSwiss RS 60 | 47.8 gr | 80% | 42,409 psi | 65% | 3005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,853 psi | 55% | 2805 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 37,565 psi | 58% | 2874 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 49,400 psi | 76% | 2989 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,931 psi | 66% | 2907 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 54,317 psi | 83% | 3117 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 94% | 47,659 psi | 73% | 3051 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 82% | 43,018 psi | 66% | 2881 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,204 psi | 60% | 2799 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,316 psi | 82% | 3068 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,601 psi | 73% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,900 psi | 61% | 2831 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,150 psi | 68% | 2963 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 54,085 psi | 83% | 3094 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,532 psi | 79% | 3061 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,489 psi | 80% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,309 psi | 68% | 2825 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,973 psi | 63% | 2795 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 47,224 psi | 72% | 3045 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 52,344 psi | 80% | 2969 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,925 psi | 83% | 3081 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,323 psi | 66% | 2907 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 32,474 psi | 50% | 2740 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 45,223 psi | 69% | 2969 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 53,011 psi | 81% | 2956 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,313 psi | 76% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,705 psi | 76% | 2966 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,379 psi | 63% | 2835 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 37,333 psi | 57% | 2792 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 96% | 44,469 psi | 68% | 2936 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 48,167 psi | 74% | 2956 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,898 psi | 57% | 2789 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 32,271 psi | 49% | 2726 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,767 psi | 56% | 2759 fps | 98.7% |
| Winchester 760 | 48 gr | 82% | 40,857 psi | 63% | 2904 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,789 psi | 43% | 2664 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,634 psi | 79% | 3068 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,254 psi | 74% | 3015 fps | 95.4% |
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 95 powders for .25-06 Rem. loaded with the .257 | 100gr | Swift A-Frame. Alliant Reloder-26 delivers the highest muzzle velocity at 3,337 fps; across all powders the maximum-charge window runs from 2,001 fps to 3,337 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 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, Alliant Reloder-19, Alliant Reloder-22 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 60, Hodgdon H414, Winchester 760 rank at the top here: for .25-06 Rem. with the .257 | 100gr | Swift A-Frame 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.