Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 150gr | Norma ECO Strike bullet and 93 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-17 and ReloadSwiss RS 60.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 52,185 psi | 86% | 3009 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,723 psi | 90% | 3074 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,398 psi | 78% | 3031 fps | 98.1% |
| Accurate 4064 | <<locked>> | 86% | 52,605 psi | 86% | 3061 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,359 psi | 88% | 3166 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 52,634 psi | 86% | 3097 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,911 psi | 89% | 3104 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,955 psi | 90% | 3205 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,911 psi | 90% | 3097 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,663 psi | 86% | 3225 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,273 psi | 89% | 3127 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,679 psi | 90% | 3150 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,505 psi | 89% | 3228 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 52,025 psi | 85% | 3202 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,143 psi | 89% | 3189 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,686 psi | 73% | 3058 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,044 psi | 64% | 2949 fps | 96.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,155 psi | 84% | 3258 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,605 psi | 86% | 3114 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 54,810 psi | 90% | 3140 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,578 psi | 90% | 3114 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,679 psi | 90% | 3127 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 52,040 psi | 85% | 3097 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 92% | 52,460 psi | 86% | 3159 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 90% | 52,750 psi | 87% | 3120 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 82% | 53,185 psi | 87% | 3107 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,607 psi | 90% | 3146 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,214 psi | 87% | 3146 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 52,692 psi | 87% | 3196 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 59% | 1962 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,389 psi | 89% | 3114 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,548 psi | 88% | 3091 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,258 psi | 87% | 3081 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,924 psi | 87% | 3061 fps | 98.2% |
| IMR 4350 | <<locked>> | 94% | 52,141 psi | 86% | 3087 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,214 psi | 87% | 3094 fps | 98.2% |
| IMR 4831 | <<locked>> | 96% | 53,882 psi | 88% | 3156 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 52,446 psi | 86% | 3123 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,911 psi | 90% | 3097 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,518 psi | 86% | 3068 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 51,924 psi | 85% | 3022 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,287 psi | 87% | 3077 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,794 psi | 87% | 3084 fps | 99.1% |
| Lovex S070 | <<locked>> | 94% | 53,911 psi | 89% | 3123 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,972 psi | 64% | 2861 fps | 96% |
| Norma 201 | <<locked>> | 84% | 54,578 psi | 90% | 3091 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,040 psi | 85% | 3038 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,940 psi | 89% | 3136 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,605 psi | 86% | 3136 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 50,444 psi | 83% | 3209 fps | 97.9% |
| Norma URP | <<locked>> | 94% | 52,417 psi | 86% | 3150 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 54,578 psi | 90% | 3159 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 54,897 psi | 90% | 3209 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,100 psi | 90% | 3140 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,390 psi | 60% | 2008 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,228 psi | 86% | 3077 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 51,561 psi | 85% | 3156 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 51,634 psi | 85% | 3199 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,229 psi | 87% | 3186 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,402 psi | 86% | 3219 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 84% | 51,837 psi | 85% | 3038 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,926 psi | 90% | 3133 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,069 psi | 87% | 3173 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 54,578 psi | 90% | 3114 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,794 psi | 87% | 3084 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,518 psi | 86% | 3068 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,287 psi | 87% | 3077 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 53,911 psi | 89% | 3123 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,185 psi | 87% | 3143 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,795 psi | 88% | 3097 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,578 psi | 90% | 3120 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,504 psi | 86% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,185 psi | 87% | 2972 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,736 psi | 87% | 3035 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,576 psi | 86% | 3166 fps | 96.9% |
| Somchem S335 | <<locked>> | 82% | 51,982 psi | 85% | 2969 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,519 psi | 88% | 3084 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,955 psi | 90% | 3130 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,621 psi | 90% | 3209 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,751 psi | 88% | 3146 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 82% | 52,982 psi | 87% | 2956 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 51,909 psi | 85% | 2999 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,547 psi | 86% | 3018 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,040 psi | 87% | 3051 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,752 psi | 90% | 3150 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 86% | 54,288 psi | 89% | 3061 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,693 psi | 88% | 3146 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,893 psi | 82% | 3146 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,694 psi | 90% | 3117 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,678 psi | 86% | 3163 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,205 psi | 66% | 3094 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,636 psi | 90% | 3130 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,459 psi | 83% | 3074 fps | 96.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 45,585 psi | 75% | 2900 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,672 psi | 73% | 2887 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 38,247 psi | 63% | 2844 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,178 psi | 71% | 2904 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,285 psi | 53% | 2717 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 49,385 psi | 81% | 3038 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,916 psi | 69% | 2874 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 48,182 psi | 79% | 3074 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,532 psi | 85% | 3045 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,687 psi | 75% | 3094 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,887 psi | 69% | 2900 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,918 psi | 74% | 2972 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,401 psi | 53% | 2736 fps | 95.5% |
| Alliant Reloder-17 | 64.2 gr | 80% | 36,492 psi | 60% | 2877 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,384 psi | 78% | 3064 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,224 psi | 46% | 2631 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,622 psi | 60% | 2884 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,215 psi | 58% | 2900 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,023 psi | 80% | 3048 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 41,640 psi | 68% | 2900 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 42,250 psi | 69% | 2874 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,082 psi | 84% | 3071 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,395 psi | 70% | 2910 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 39,813 psi | 65% | 2904 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 86% | 46,253 psi | 76% | 2995 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 49,908 psi | 82% | 3051 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,762 psi | 49% | 2625 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,296 psi | 76% | 3022 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 42,148 psi | 69% | 2982 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,600 psi | 44% | 1755 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,863 psi | 79% | 2999 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 50,038 psi | 82% | 3035 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,034 psi | 72% | 2913 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,485 psi | 76% | 2940 fps | 96.9% |
| IMR 4350 | <<locked>> | 88% | 42,931 psi | 70% | 2910 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,220 psi | 68% | 2854 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 31,401 psi | 52% | 2674 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 46,079 psi | 76% | 3005 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 51,532 psi | 85% | 3045 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,950 psi | 80% | 3009 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,776 psi | 80% | 2966 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,918 psi | 72% | 2913 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,984 psi | 59% | 2733 fps | 95.2% |
| Lovex S070 | <<locked>> | 84% | 38,986 psi | 64% | 2825 fps | 95% |
| Lovex S071 | <<locked>> | 98% | 36,550 psi | 60% | 2805 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 47,993 psi | 79% | 2979 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,776 psi | 80% | 2986 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,251 psi | 73% | 2956 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 48,994 psi | 80% | 3071 fps | 95.7% |
| Norma MRP | <<locked>> | 94% | 40,756 psi | 67% | 2999 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 32,605 psi | 54% | 2723 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 44,396 psi | 73% | 2976 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 39,015 psi | 64% | 2890 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,503 psi | 85% | 3077 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,977 psi | 44% | 1798 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,656 psi | 70% | 2890 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,182 psi | 79% | 3094 fps | 99.6% |
| ReloadSwiss RS 60 | 64.2 gr | 80% | 38,856 psi | 64% | 2949 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,563 psi | 57% | 2799 fps | 95.9% |
| ReloadSwiss RS 70 | 68.4 gr | 84% | 36,695 psi | 60% | 2871 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 45,759 psi | 75% | 2930 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,160 psi | 64% | 2841 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 96% | 46,108 psi | 76% | 3041 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 84% | 42,250 psi | 69% | 2874 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,984 psi | 59% | 2733 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,950 psi | 80% | 3009 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,918 psi | 72% | 2913 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 38,986 psi | 64% | 2825 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,509 psi | 67% | 2904 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,980 psi | 82% | 3031 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,964 psi | 79% | 3005 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,168 psi | 81% | 2920 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,205 psi | 68% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,437 psi | 66% | 2795 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,687 psi | 75% | 3035 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 48,834 psi | 80% | 2917 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,835 psi | 82% | 3025 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,769 psi | 65% | 2848 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 29,095 psi | 48% | 2667 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 43,918 psi | 72% | 2963 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 49,690 psi | 82% | 2907 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,585 psi | 75% | 2900 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,180 psi | 76% | 2913 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,985 psi | 62% | 2776 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 34,040 psi | 56% | 2726 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 44,585 psi | 73% | 2900 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,518 psi | 55% | 2723 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 86% | 30,806 psi | 51% | 2717 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,576 psi | 55% | 2697 fps | 98% |
| Winchester 760 | <<locked>> | 84% | 40,001 psi | 66% | 2907 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,514 psi | 47% | 2726 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,674 psi | 78% | 3012 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,876 psi | 77% | 3009 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 111 powders for .300 Blaser Mag. loaded with the .308 | 150gr | Norma ECO Strike. Alliant Reloder-26 delivers the highest muzzle velocity at 3,258 fps; across all powders the maximum-charge window runs from 1,962 fps to 3,258 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 (420 MPa), the top charges use 59–90 %, 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. 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-17, ReloadSwiss RS 60 rank at the top here: for .300 Blaser Mag. with the .308 | 150gr | Norma ECO Strike 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.