Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 150gr | Hasler Hunting 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 60, Alliant Reloder-17 and Hodgdon H414.
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 2015 | <<locked>> | 84% | 56,188 psi | 90% | 2946 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,752 psi | 88% | 2963 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,200 psi | 85% | 2982 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,215 psi | 87% | 2963 fps | 96.6% |
| Accurate 4064 | <<locked>> | 90% | 54,969 psi | 88% | 3015 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,506 psi | 89% | 3104 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 55,637 psi | 89% | 3051 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 53,272 psi | 85% | 2995 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,607 psi | 88% | 2999 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,405 psi | 89% | 2976 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,666 psi | 89% | 3176 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 53,243 psi | 85% | 3018 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 53,882 psi | 86% | 3041 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 53,185 psi | 85% | 3110 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,418 psi | 87% | 3146 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,509 psi | 65% | 2874 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,527 psi | 73% | 3045 fps | 98% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,521 psi | 89% | 3064 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 53,911 psi | 86% | 3035 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,099 psi | 87% | 3002 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,188 psi | 90% | 2982 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 53,940 psi | 86% | 3025 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 56,057 psi | 90% | 3133 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 90% | 54,708 psi | 88% | 3045 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 96% | 54,650 psi | 88% | 3097 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 94% | 55,347 psi | 89% | 3061 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 86% | 56,231 psi | 90% | 3061 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,982 psi | 85% | 3031 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,883 psi | 90% | 3094 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,550 psi | 89% | 3136 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,404 psi | 57% | 1883 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,027 psi | 87% | 3012 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,173 psi | 90% | 3041 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,130 psi | 90% | 3035 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,130 psi | 90% | 3015 fps | 97.7% |
| IMR 4350 | <<locked>> | 98% | 54,491 psi | 87% | 3028 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,028 psi | 90% | 3038 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,985 psi | 90% | 3094 fps | 99.6% |
| IMR 4895 | <<locked>> | 88% | 55,288 psi | 89% | 3074 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 54,607 psi | 88% | 2999 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,376 psi | 89% | 3025 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,969 psi | 88% | 2976 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 56,028 psi | 90% | 3031 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,230 psi | 89% | 3028 fps | 98.7% |
| Lovex S070 | <<locked>> | 98% | 56,260 psi | 90% | 3064 fps | 98% |
| Norma 201 | <<locked>> | 86% | 54,215 psi | 87% | 2992 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,853 psi | 88% | 2995 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,084 psi | 85% | 3025 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 54,418 psi | 87% | 3087 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 88% | 53,751 psi | 86% | 3051 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 98% | 53,359 psi | 86% | 3081 fps | 98.1% |
| Ramshot TAC | <<locked>> | 84% | 54,926 psi | 88% | 3018 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,563 psi | 87% | 3035 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,216 psi | 89% | 2995 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,940 psi | 58% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,129 psi | 88% | 3028 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,244 psi | 87% | 3107 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,027 psi | 87% | 3146 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 55,477 psi | 89% | 3127 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,013 psi | 88% | 3156 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 84% | 54,781 psi | 88% | 2972 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,737 psi | 88% | 2992 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 53,751 psi | 86% | 3025 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,099 psi | 87% | 3002 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,230 psi | 89% | 3028 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,376 psi | 89% | 3025 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 56,028 psi | 90% | 3031 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,260 psi | 90% | 3064 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,840 psi | 90% | 3091 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,040 psi | 85% | 2989 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,012 psi | 87% | 3015 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,709 psi | 89% | 2933 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,231 psi | 90% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,579 psi | 89% | 2979 fps | 97.6% |
| Somchem S321 | <<locked>> | 82% | 55,637 psi | 89% | 3031 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,129 psi | 88% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 52,837 psi | 85% | 2979 fps | 99.7% |
| Somchem S355 | <<locked>> | 92% | 54,114 psi | 87% | 3025 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 3091 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 55,201 psi | 89% | 2890 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,014 psi | 90% | 2917 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,505 psi | 87% | 2956 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,448 psi | 89% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,724 psi | 89% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 53,519 psi | 86% | 3031 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 84% | 54,984 psi | 88% | 2999 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 53,592 psi | 86% | 2966 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,144 psi | 90% | 3091 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,556 psi | 71% | 2953 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,751 psi | 86% | 3009 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,085 psi | 88% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,911 psi | 88% | 3100 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,187 psi | 58% | 2867 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 86% | 53,882 psi | 86% | 3025 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% | 49,458 psi | 79% | 2844 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,742 psi | 67% | 2753 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,530 psi | 79% | 2923 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,471 psi | 76% | 2844 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 39,523 psi | 63% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 36,172 psi | 58% | 2726 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 45,861 psi | 74% | 2881 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 38,870 psi | 62% | 2713 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,022 psi | 77% | 2890 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 48,414 psi | 78% | 2874 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,829 psi | 67% | 2904 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,450 psi | 62% | 2733 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,495 psi | 67% | 2805 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 36,201 psi | 58% | 2746 fps | 95.7% |
| Alliant Reloder-17 | 58.8 gr | 80% | 33,315 psi | 53% | 2694 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,270 psi | 50% | 2631 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 39,305 psi | 63% | 2900 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,208 psi | 72% | 2881 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 38,203 psi | 61% | 2736 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 47,471 psi | 76% | 2881 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,574 psi | 79% | 2877 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,920 psi | 75% | 2907 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,185 psi | 84% | 3068 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 80% | 39,059 psi | 63% | 2743 fps | 95.9% |
| Hodgdon H414 | 64.7 gr | 90% | 44,599 psi | 72% | 2910 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 92% | 51,895 psi | 83% | 3002 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 46,340 psi | 74% | 2890 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,995 psi | 50% | 2572 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,511 psi | 68% | 2858 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 92% | 47,921 psi | 77% | 2999 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,324 psi | 42% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,454 psi | 71% | 2838 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 46,122 psi | 74% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,785 psi | 65% | 2753 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,180 psi | 74% | 2835 fps | 95.5% |
| IMR 4350 | <<locked>> | 94% | 47,950 psi | 77% | 2910 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,340 psi | 74% | 2861 fps | 95.5% |
| IMR 4831 | <<locked>> | 86% | 35,027 psi | 56% | 2680 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 42,554 psi | 68% | 2841 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 48,022 psi | 77% | 2890 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 45,092 psi | 72% | 2858 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,614 psi | 73% | 2812 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 40,596 psi | 65% | 2753 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 40,437 psi | 65% | 2746 fps | 95.4% |
| Lovex S070 | <<locked>> | 90% | 43,642 psi | 70% | 2831 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 44,570 psi | 71% | 2825 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 45,078 psi | 72% | 2835 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,843 psi | 65% | 2792 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 36,405 psi | 58% | 2730 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 40,538 psi | 65% | 2805 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 43,627 psi | 70% | 2897 fps | 95.9% |
| Ramshot TAC | <<locked>> | 80% | 47,834 psi | 77% | 2890 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,558 psi | 76% | 2913 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,677 psi | 83% | 2940 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,701 psi | 43% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,293 psi | 68% | 2785 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,947 psi | 70% | 2917 fps | 98.3% |
| ReloadSwiss RS 60 | 58.8 gr | 80% | 35,491 psi | 57% | 2769 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 35,911 psi | 58% | 2743 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 38,653 psi | 62% | 2818 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 48,588 psi | 78% | 2871 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,337 psi | 68% | 2772 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 35,737 psi | 57% | 2674 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 47,471 psi | 76% | 2881 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 40,437 psi | 65% | 2746 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,092 psi | 72% | 2858 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,596 psi | 65% | 2753 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 90% | 43,642 psi | 70% | 2831 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,057 psi | 59% | 2730 fps | 97.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,093 psi | 74% | 2861 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,382 psi | 71% | 2844 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,021 psi | 74% | 2779 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,334 psi | 61% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 45,498 psi | 73% | 2802 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 51,967 psi | 83% | 2972 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,556 psi | 73% | 2776 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,992 psi | 74% | 2861 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 36,608 psi | 59% | 2680 fps | 97.5% |
| Somchem S365 | <<locked>> | 82% | 28,311 psi | 45% | 2549 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 51,967 psi | 83% | 2844 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,456 psi | 74% | 2776 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,090 psi | 67% | 2756 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,670 psi | 68% | 2762 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,809 psi | 56% | 2615 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 84% | 35,665 psi | 57% | 2677 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 48,153 psi | 77% | 2884 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 41,249 psi | 66% | 2753 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 37,550 psi | 60% | 2736 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 33,823 psi | 54% | 2713 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,908 psi | 50% | 2530 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 48,037 psi | 77% | 2933 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 44,817 psi | 72% | 2917 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 96% | 31,589 psi | 51% | 2723 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,888 psi | 70% | 2848 fps | 99.2% |
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 H&H Mag. loaded with the .308 | 150gr | Hasler Hunting. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,176 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,176 fps. Alliant Reloder-23 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 1:12.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon Hybrid 100V 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, Alliant Reloder-17, Hodgdon H414 rank at the top here: for .300 H&H Mag. with the .308 | 150gr | Hasler Hunting 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.