Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 145gr | CutEdge ESP Raptor bullet and 91 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.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 52,591 psi | 86% | 3068 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,430 psi | 84% | 3071 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,863 psi | 79% | 3087 fps | 98.1% |
| Accurate 4064 | <<locked>> | 86% | 53,113 psi | 87% | 3123 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,882 psi | 88% | 3225 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 52,953 psi | 87% | 3159 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,288 psi | 89% | 3163 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 51,982 psi | 85% | 3202 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,142 psi | 87% | 3291 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 51,793 psi | 85% | 3196 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,650 psi | 90% | 3186 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,868 psi | 90% | 3209 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,013 psi | 90% | 3294 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 52,547 psi | 86% | 3264 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,621 psi | 90% | 3251 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,194 psi | 74% | 3120 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,566 psi | 65% | 3009 fps | 96.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,779 psi | 85% | 3320 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,924 psi | 87% | 3169 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 51,692 psi | 85% | 3143 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,998 psi | 90% | 3176 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,027 psi | 90% | 3186 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 52,373 psi | 86% | 3159 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 92% | 52,953 psi | 87% | 3222 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 90% | 53,113 psi | 87% | 3179 fps | 97% |
| Hodgdon H4895 | <<locked>> | 82% | 53,548 psi | 88% | 3169 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,114 psi | 90% | 3209 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,534 psi | 88% | 3202 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,243 psi | 87% | 3258 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,824 psi | 59% | 2008 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,636 psi | 90% | 3173 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,824 psi | 88% | 3150 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,737 psi | 88% | 3146 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,098 psi | 87% | 3117 fps | 98.1% |
| IMR 4350 | <<locked>> | 94% | 52,605 psi | 86% | 3150 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,461 psi | 88% | 3150 fps | 98.1% |
| IMR 4831 | <<locked>> | 96% | 54,331 psi | 89% | 3215 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 52,910 psi | 87% | 3186 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,011 psi | 87% | 3130 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,141 psi | 86% | 3081 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,548 psi | 88% | 3140 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,171 psi | 87% | 3146 fps | 99.1% |
| Lovex S070 | <<locked>> | 94% | 54,201 psi | 89% | 3182 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,407 psi | 65% | 2913 fps | 95.9% |
| Norma 201 | <<locked>> | 84% | 54,911 psi | 90% | 3153 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,243 psi | 86% | 3097 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,143 psi | 89% | 3192 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,156 psi | 87% | 3199 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 50,952 psi | 84% | 3268 fps | 97.9% |
| Norma URP | <<locked>> | 94% | 52,736 psi | 87% | 3209 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 84% | 51,445 psi | 84% | 3159 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 94% | 51,837 psi | 85% | 3205 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 60% | 2054 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,663 psi | 86% | 3140 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 52,069 psi | 85% | 3222 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 52,025 psi | 85% | 3261 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,809 psi | 88% | 3248 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,823 psi | 87% | 3278 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 84% | 52,243 psi | 86% | 3100 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 51,793 psi | 85% | 3140 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,577 psi | 88% | 3232 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 54,998 psi | 90% | 3176 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,171 psi | 87% | 3146 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,011 psi | 87% | 3130 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,548 psi | 88% | 3140 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,201 psi | 89% | 3182 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,606 psi | 88% | 3202 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,070 psi | 89% | 3156 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,926 psi | 90% | 3182 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,808 psi | 87% | 3035 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,461 psi | 88% | 3031 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,011 psi | 87% | 3091 fps | 98.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,084 psi | 87% | 3225 fps | 96.9% |
| Somchem S335 | <<locked>> | 82% | 52,417 psi | 86% | 3031 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,838 psi | 88% | 3146 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 51,953 psi | 85% | 3136 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 51,488 psi | 85% | 3212 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,157 psi | 89% | 3202 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 82% | 53,316 psi | 88% | 3018 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,388 psi | 86% | 3061 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,837 psi | 87% | 3077 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,301 psi | 88% | 3110 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 51,634 psi | 85% | 3150 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 86% | 54,621 psi | 90% | 3123 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,331 psi | 89% | 3212 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,285 psi | 83% | 3202 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 51,517 psi | 85% | 3120 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,953 psi | 87% | 3222 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,640 psi | 67% | 3153 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 51,445 psi | 84% | 3130 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,981 psi | 84% | 3133 fps | 96.1% |
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% | 45,919 psi | 75% | 2959 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,121 psi | 74% | 2946 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 38,711 psi | 64% | 2900 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 43,482 psi | 71% | 2959 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,518 psi | 53% | 2769 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 49,588 psi | 81% | 3097 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,177 psi | 69% | 2933 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 48,544 psi | 80% | 3133 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,919 psi | 75% | 3150 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 48,428 psi | 80% | 3133 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,148 psi | 69% | 2956 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,136 psi | 74% | 3028 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,634 psi | 54% | 2789 fps | 95.4% |
| Alliant Reloder-17 | 66.2 gr | 80% | 36,724 psi | 60% | 2930 fps | 98.6% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,790 psi | 78% | 3120 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,514 psi | 47% | 2684 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,028 psi | 61% | 2940 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,491 psi | 58% | 2953 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,342 psi | 81% | 3107 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 42,032 psi | 69% | 2959 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 42,540 psi | 70% | 2930 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,285 psi | 84% | 3127 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,728 psi | 70% | 2969 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 84% | 40,161 psi | 66% | 2959 fps | 95% |
| Hodgdon H4350 | <<locked>> | 86% | 46,557 psi | 76% | 3051 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 50,125 psi | 82% | 3110 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,008 psi | 49% | 2677 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,572 psi | 76% | 3081 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 42,540 psi | 70% | 3038 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,672 psi | 44% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,051 psi | 79% | 3054 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 50,386 psi | 83% | 3097 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,324 psi | 73% | 2972 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,630 psi | 77% | 2995 fps | 96.8% |
| IMR 4350 | <<locked>> | 88% | 43,192 psi | 71% | 2963 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,524 psi | 68% | 2910 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 33,924 psi | 56% | 2789 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 46,282 psi | 76% | 3064 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 49,313 psi | 81% | 3068 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,066 psi | 81% | 3025 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 44,222 psi | 73% | 2969 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,230 psi | 59% | 2789 fps | 95.1% |
| Lovex S070 | <<locked>> | 86% | 41,974 psi | 69% | 2943 fps | 95.8% |
| Lovex S071 | <<locked>> | 98% | 36,811 psi | 60% | 2854 fps | 95% |
| Norma 201 | <<locked>> | 80% | 48,283 psi | 79% | 3038 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,052 psi | 81% | 3045 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,483 psi | 73% | 3015 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 49,414 psi | 81% | 3130 fps | 95.6% |
| Norma MRP | <<locked>> | 94% | 41,220 psi | 68% | 3058 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,808 psi | 54% | 2772 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 44,599 psi | 73% | 3031 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 39,407 psi | 65% | 2949 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,035 psi | 44% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,888 psi | 70% | 2949 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,530 psi | 80% | 3156 fps | 99.6% |
| ReloadSwiss RS 60 | 66.2 gr | 80% | 39,117 psi | 64% | 3002 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,911 psi | 57% | 2851 fps | 95.8% |
| ReloadSwiss RS 70 | 70.6 gr | 84% | 37,057 psi | 61% | 2927 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 45,890 psi | 75% | 2982 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,407 psi | 65% | 2897 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 96% | 46,775 psi | 77% | 3104 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 84% | 42,540 psi | 70% | 2930 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,230 psi | 59% | 2789 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,313 psi | 81% | 3068 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,222 psi | 73% | 2969 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 41,974 psi | 69% | 2943 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,799 psi | 67% | 2959 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,357 psi | 83% | 3091 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,269 psi | 79% | 3064 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,545 psi | 81% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,539 psi | 68% | 2831 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,640 psi | 67% | 2848 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,340 psi | 76% | 3097 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 49,110 psi | 81% | 2976 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,198 psi | 82% | 3084 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,001 psi | 66% | 2900 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 29,428 psi | 48% | 2720 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 44,324 psi | 73% | 3018 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 50,067 psi | 82% | 2969 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,992 psi | 76% | 2959 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,441 psi | 76% | 2969 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,189 psi | 63% | 2828 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 34,229 psi | 56% | 2779 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 44,875 psi | 74% | 2959 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,765 psi | 55% | 2776 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 31,067 psi | 51% | 2766 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,852 psi | 56% | 2749 fps | 98% |
| Winchester 760 | <<locked>> | 84% | 40,350 psi | 66% | 2963 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,718 psi | 47% | 2772 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,921 psi | 79% | 3068 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 47,471 psi | 78% | 3071 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 91 powders for .300 Blaser Mag. loaded with the .308 | 145gr | CutEdge ESP Raptor. Alliant Reloder-26 delivers the highest muzzle velocity at 3,320 fps; across all powders the maximum-charge window runs from 2,008 fps to 3,320 fps. Accurate 3100 gives the best case fill at 100 %, and 91 of the 91 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 145.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, Alliant Reloder-23 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 | 145gr | CutEdge ESP Raptor 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.