Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 150gr | Barnes TSX FN FB bullet and 94 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.
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>> | 86% | 56,289 psi | 90% | 3012 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,866 psi | 85% | 2972 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,747 psi | 77% | 2979 fps | 97.7% |
| Accurate 4064 | <<locked>> | 86% | 53,040 psi | 85% | 3015 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,635 psi | 86% | 3110 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 53,040 psi | 85% | 3048 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 88% | 54,317 psi | 87% | 3051 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,463 psi | 89% | 3153 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,303 psi | 89% | 3048 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,156 psi | 85% | 3173 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,505 psi | 87% | 3074 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,911 psi | 88% | 3097 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,766 psi | 88% | 3173 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,217 psi | 90% | 3205 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,447 psi | 87% | 3133 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,962 psi | 72% | 3002 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,407 psi | 63% | 2890 fps | 96% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,503 psi | 83% | 3199 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,837 psi | 85% | 3058 fps | 99.6% |
| Bofors RP3 | <<locked>> | 88% | 55,317 psi | 89% | 3091 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,042 psi | 88% | 3064 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,897 psi | 88% | 3074 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,014 psi | 90% | 3107 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 90% | 54,143 psi | 87% | 3127 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 94% | 54,795 psi | 88% | 3097 fps | 97% |
| Hodgdon H4895 | <<locked>> | 82% | 53,592 psi | 86% | 3058 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,882 psi | 88% | 3094 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,664 psi | 86% | 3094 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 52,982 psi | 85% | 3140 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,723 psi | 57% | 1932 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,867 psi | 86% | 3048 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,956 psi | 90% | 3074 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 52,982 psi | 85% | 3025 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,593 psi | 89% | 3051 fps | 98.2% |
| IMR 4350 | <<locked>> | 96% | 55,985 psi | 90% | 3097 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,432 psi | 86% | 3038 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,114 psi | 88% | 3114 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 56,362 psi | 90% | 3130 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,303 psi | 89% | 3048 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,968 psi | 85% | 3018 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,434 psi | 89% | 3025 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,490 psi | 86% | 3028 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,214 psi | 85% | 3035 fps | 98.9% |
| Lovex S070 | <<locked>> | 94% | 54,143 psi | 87% | 3071 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 55,013 psi | 88% | 3045 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,680 psi | 89% | 3041 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,143 psi | 87% | 3081 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,098 psi | 85% | 3087 fps | 96.1% |
| Norma MRPᴾ | <<locked>> | 100% | 50,763 psi | 81% | 3150 fps | 97.5% |
| Norma URP | <<locked>> | 94% | 52,678 psi | 84% | 3094 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 86% | 55,085 psi | 88% | 3110 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,187 psi | 88% | 3150 fps | 98.9% |
| Ramshot TAC | <<locked>> | 82% | 55,550 psi | 89% | 3071 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,303 psi | 89% | 3084 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,260 psi | 58% | 1978 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,057 psi | 90% | 3084 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,854 psi | 90% | 3173 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,767 psi | 89% | 3202 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,780 psi | 86% | 3133 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,707 psi | 85% | 3163 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 55,506 psi | 89% | 3022 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,695 psi | 89% | 3045 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,187 psi | 88% | 3084 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,359 psi | 86% | 3114 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 92% | 55,042 psi | 88% | 3064 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,214 psi | 85% | 3035 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,968 psi | 85% | 3018 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,490 psi | 86% | 3028 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,143 psi | 87% | 3071 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,461 psi | 86% | 3091 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,983 psi | 87% | 3045 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,042 psi | 88% | 3074 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,202 psi | 90% | 2979 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,592 psi | 86% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,924 psi | 85% | 2979 fps | 97.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,881 psi | 85% | 3107 fps | 96.5% |
| Somchem S335 | <<locked>> | 84% | 55,738 psi | 89% | 2972 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,751 psi | 86% | 3035 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,405 psi | 89% | 3081 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,230 psi | 89% | 3159 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,041 psi | 87% | 3091 fps | 97.5% |
| Unknown powder | <<locked>> | 92% | 53,577 psi | 86% | 3107 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 86% | 55,985 psi | 90% | 2956 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,593 psi | 89% | 3002 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,521 psi | 89% | 3012 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 53,577 psi | 86% | 3012 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,925 psi | 86% | 3071 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 86% | 55,303 psi | 89% | 3038 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,360 psi | 87% | 3120 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,241 psi | 81% | 3087 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,201 psi | 89% | 3068 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,143 psi | 87% | 3127 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,466 psi | 65% | 3031 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,649 psi | 84% | 3054 fps | 96.1% |
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% | 46,021 psi | 74% | 2858 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 46,209 psi | 74% | 2851 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 38,522 psi | 62% | 2789 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,569 psi | 70% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 35,056 psi | 56% | 2726 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 49,559 psi | 79% | 2989 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 42,061 psi | 67% | 2822 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 96% | 48,602 psi | 78% | 3022 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,706 psi | 83% | 2992 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,905 psi | 74% | 3035 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,061 psi | 67% | 2844 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,092 psi | 72% | 2917 fps | 99% |
| Alliant Reloder-16 | 61 gr | 82% | 34,737 psi | 56% | 2743 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,666 psi | 59% | 2818 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,848 psi | 77% | 3012 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,414 psi | 49% | 2641 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,999 psi | 59% | 2828 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,418 psi | 57% | 2835 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,414 psi | 79% | 2999 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 42,032 psi | 67% | 2851 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 45,426 psi | 73% | 2884 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,285 psi | 82% | 3018 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,772 psi | 69% | 2861 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 84% | 43,888 psi | 70% | 2933 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 90% | 48,240 psi | 77% | 2979 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 50,067 psi | 80% | 2995 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,907 psi | 48% | 2572 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,918 psi | 70% | 2917 fps | 99.7% |
| Hodgdon Superformance | 74.5 gr | 88% | 45,629 psi | 73% | 2995 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 43% | 1729 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,396 psi | 71% | 2874 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 46,050 psi | 74% | 2913 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,191 psi | 66% | 2799 fps | 98.4% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,410 psi | 70% | 2822 fps | 95.6% |
| IMR 4350 | <<locked>> | 90% | 46,137 psi | 74% | 2917 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,280 psi | 71% | 2864 fps | 95.7% |
| IMR 4831 | <<locked>> | 84% | 32,735 psi | 52% | 2654 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 46,238 psi | 74% | 2949 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 51,706 psi | 83% | 2992 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,400 psi | 79% | 2963 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,124 psi | 79% | 2917 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 44,280 psi | 71% | 2861 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 38,711 psi | 62% | 2743 fps | 95.6% |
| Lovex S070 | <<locked>> | 86% | 41,974 psi | 67% | 2835 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 48,356 psi | 78% | 2930 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,936 psi | 78% | 2936 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,454 psi | 71% | 2904 fps | 99.3% |
| Norma 204 | <<locked>> | 92% | 49,443 psi | 79% | 3018 fps | 95.2% |
| Norma MRP | <<locked>> | 96% | 44,019 psi | 71% | 3009 fps | 95.6% |
| Norma URP | <<locked>> | 82% | 35,244 psi | 57% | 2733 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 44,599 psi | 72% | 2923 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 39,363 psi | 63% | 2838 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 51,822 psi | 83% | 3005 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,692 psi | 83% | 3025 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,035 psi | 43% | 1772 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,018 psi | 69% | 2841 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,414 psi | 78% | 3041 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,073 psi | 63% | 2890 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,940 psi | 56% | 2746 fps | 95.4% |
| ReloadSwiss RS 70 | 68.4 gr | 84% | 37,028 psi | 59% | 2818 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 52,330 psi | 84% | 2969 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,934 psi | 74% | 2877 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,508 psi | 63% | 2792 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 49,864 psi | 80% | 3051 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 86% | 45,426 psi | 73% | 2884 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,711 psi | 62% | 2743 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,400 psi | 79% | 2963 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,280 psi | 71% | 2861 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 41,974 psi | 67% | 2835 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,727 psi | 65% | 2844 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,415 psi | 81% | 2982 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,138 psi | 77% | 2953 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,516 psi | 79% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,524 psi | 67% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,511 psi | 70% | 2805 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,400 psi | 79% | 3045 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 49,197 psi | 79% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,256 psi | 81% | 2976 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 40,089 psi | 64% | 2795 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 29,385 psi | 47% | 2615 fps | 97% |
| Somchem S385 | <<locked>> | 94% | 44,179 psi | 71% | 2907 fps | 95.1% |
| Unknown powder | <<locked>> | 80% | 35,621 psi | 57% | 2733 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 46,717 psi | 75% | 2815 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,861 psi | 74% | 2851 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,788 psi | 73% | 2854 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,243 psi | 55% | 2635 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 80% | 35,723 psi | 57% | 2707 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 45,542 psi | 73% | 2877 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,303 psi | 58% | 2753 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 88% | 33,257 psi | 53% | 2720 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,881 psi | 54% | 2648 fps | 97.6% |
| Winchester 760 | <<locked>> | 84% | 43,888 psi | 70% | 2933 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,674 psi | 46% | 2657 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,878 psi | 78% | 2986 fps | 95.2% |
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 94 powders for .300 Win. Mag. loaded with the .308 | 150gr | Barnes TSX FN FB. Alliant Reloder-17 delivers the highest muzzle velocity at 3,205 fps; across all powders the maximum-charge window runs from 1,932 fps to 3,205 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.0 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 .300 Win. Mag. with the .308 | 150gr | Barnes TSX FN FB 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.