Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 147gr | Armscor FMJ bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 60 and ReloadSwiss RS 70.
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% | 54,360 psi | 89% | 3064 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 52,547 psi | 86% | 3064 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,226 psi | 81% | 3087 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 54,549 psi | 90% | 3117 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,056 psi | 90% | 3219 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,824 psi | 88% | 3297 fps | 96% |
| ADI AR 2206H | <<locked>> | 82% | 54,027 psi | 89% | 3150 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,085 psi | 90% | 3150 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 52,823 psi | 87% | 3192 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,056 psi | 89% | 3278 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 52,678 psi | 86% | 3189 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 52,301 psi | 86% | 3123 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 52,504 psi | 86% | 3140 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 52,402 psi | 86% | 3222 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,417 psi | 88% | 3251 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 51,967 psi | 85% | 3179 fps | 96.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,008 psi | 80% | 3169 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,224 psi | 76% | 3117 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,582 psi | 67% | 3009 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,866 psi | 87% | 3317 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,780 psi | 88% | 3159 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 52,895 psi | 87% | 3136 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,008 psi | 80% | 3169 fps | 96% |
| Bofors RP7 | <<locked>> | 90% | 52,692 psi | 87% | 3107 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 86% | 53,432 psi | 88% | 3150 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 53,824 psi | 88% | 3212 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 90% | 54,056 psi | 89% | 3173 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 82% | 54,592 psi | 90% | 3159 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 52,417 psi | 86% | 3140 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,462 psi | 89% | 3192 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,041 psi | 89% | 3245 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,926 psi | 59% | 1988 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,272 psi | 86% | 3104 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,897 psi | 90% | 3140 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,549 psi | 90% | 3133 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,085 psi | 89% | 3110 fps | 98.3% |
| IMR 4350 | <<locked>> | 94% | 53,345 psi | 88% | 3136 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,462 psi | 89% | 3143 fps | 98.3% |
| IMR 4831 | <<locked>> | 94% | 51,967 psi | 85% | 3150 fps | 99.7% |
| IMR 4895 | <<locked>> | 84% | 53,838 psi | 88% | 3176 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,114 psi | 89% | 3120 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,982 psi | 87% | 3068 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,752 psi | 90% | 3130 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,244 psi | 89% | 3136 fps | 99.2% |
| Lovex S070 | <<locked>> | 92% | 52,112 psi | 86% | 3120 fps | 98.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,843 psi | 67% | 2923 fps | 96.5% |
| Norma 201 | <<locked>> | 82% | 52,808 psi | 87% | 3091 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,301 psi | 88% | 3087 fps | 100% |
| Norma 203B | <<locked>> | 84% | 51,808 psi | 85% | 3127 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,041 psi | 89% | 3189 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 52,098 psi | 86% | 3264 fps | 98.1% |
| Norma URP | <<locked>> | 94% | 53,853 psi | 88% | 3202 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 52,417 psi | 86% | 3153 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 52,721 psi | 87% | 3199 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 60% | 2041 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,635 psi | 88% | 3130 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,243 psi | 87% | 3215 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,055 psi | 87% | 3248 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,926 psi | 90% | 3241 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,795 psi | 88% | 3268 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 53,432 psi | 88% | 3091 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 52,968 psi | 87% | 3130 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,607 psi | 90% | 3225 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 52,692 psi | 87% | 3107 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,244 psi | 89% | 3136 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,114 psi | 89% | 3120 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,752 psi | 90% | 3130 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,112 psi | 86% | 3120 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,636 psi | 90% | 3192 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 52,518 psi | 86% | 3114 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,693 psi | 88% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,418 psi | 89% | 3022 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,157 psi | 89% | 3081 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,114 psi | 89% | 3219 fps | 97.1% |
| Somchem S335 | <<locked>> | 82% | 53,447 psi | 88% | 3018 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,723 psi | 90% | 3133 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,214 psi | 87% | 3130 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 52,765 psi | 87% | 3209 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 51,924 psi | 85% | 3140 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 82% | 54,143 psi | 89% | 3002 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,490 psi | 88% | 3051 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,896 psi | 88% | 3064 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,346 psi | 89% | 3100 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 52,721 psi | 87% | 3143 fps | 99.7% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,747 psi | 78% | 3045 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 84% | 52,127 psi | 86% | 3058 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 51,793 psi | 85% | 3143 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,721 psi | 85% | 3202 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 52,417 psi | 86% | 3107 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,041 psi | 89% | 3215 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,640 psi | 68% | 3153 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 52,330 psi | 86% | 3120 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,040 psi | 85% | 3130 fps | 96.4% |
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% | 47,747 psi | 78% | 2959 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,992 psi | 76% | 2940 fps | 95.8% |
| Accurate 3100 | <<locked>> | 92% | 37,333 psi | 61% | 2841 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 45,179 psi | 74% | 2963 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,779 psi | 55% | 2776 fps | 95.8% |
| Accurate High Country | <<locked>> | 98% | 50,212 psi | 82% | 3232 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 50,604 psi | 83% | 3091 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,004 psi | 71% | 2923 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 49,545 psi | 81% | 3130 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,949 psi | 77% | 3146 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,282 psi | 76% | 3064 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,178 psi | 71% | 2949 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,166 psi | 76% | 3022 fps | 99.4% |
| Alliant Reloder-16 | 60.7 gr | 80% | 33,518 psi | 55% | 2792 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,768 psi | 62% | 2933 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 48,834 psi | 80% | 3117 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,992 psi | 76% | 3107 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,457 psi | 48% | 2690 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,708 psi | 59% | 2877 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,185 psi | 56% | 2890 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,401 psi | 83% | 3100 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 43,294 psi | 71% | 2959 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 45,992 psi | 76% | 3107 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 43,598 psi | 72% | 2927 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 43,888 psi | 72% | 2966 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 41,133 psi | 68% | 2956 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 47,413 psi | 78% | 3045 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 51,126 psi | 84% | 3100 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,995 psi | 51% | 2680 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,645 psi | 78% | 3077 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 43,598 psi | 72% | 3038 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 44% | 1781 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,965 psi | 80% | 3045 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 51,430 psi | 84% | 3084 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,208 psi | 74% | 2963 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,529 psi | 78% | 2986 fps | 97% |
| IMR 4350 | <<locked>> | 88% | 44,251 psi | 73% | 2963 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,395 psi | 70% | 2904 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 32,692 psi | 54% | 2730 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 47,340 psi | 78% | 3054 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 50,604 psi | 83% | 3061 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,864 psi | 82% | 3012 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,295 psi | 74% | 2963 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 37,420 psi | 61% | 2792 fps | 95.6% |
| Lovex S070 | <<locked>> | 84% | 40,422 psi | 66% | 2881 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 38,203 psi | 63% | 2861 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 49,617 psi | 81% | 3035 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,082 psi | 82% | 3035 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,527 psi | 75% | 3009 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 47,137 psi | 77% | 3061 fps | 95% |
| Norma MRP | <<locked>> | 94% | 42,264 psi | 69% | 3061 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 33,852 psi | 56% | 2776 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 45,701 psi | 75% | 3028 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 37,753 psi | 62% | 2884 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 45% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,976 psi | 72% | 2946 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,443 psi | 81% | 3146 fps | 99.7% |
| ReloadSwiss RS 60 | 65.4 gr | 80% | 40,176 psi | 66% | 3002 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,562 psi | 55% | 2792 fps | 95.4% |
| ReloadSwiss RS 70 | 68 gr | 82% | 35,404 psi | 58% | 2858 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 47,224 psi | 78% | 2982 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,654 psi | 67% | 2897 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 96% | 47,674 psi | 78% | 3097 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 43,598 psi | 72% | 2927 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,420 psi | 61% | 2792 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,604 psi | 83% | 3061 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,295 psi | 74% | 2963 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 40,422 psi | 66% | 2881 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,698 psi | 68% | 2953 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,052 psi | 81% | 3054 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,430 psi | 83% | 2969 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,395 psi | 70% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,785 psi | 69% | 2848 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 47,224 psi | 78% | 3091 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 50,314 psi | 83% | 2969 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,314 psi | 84% | 3077 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,307 psi | 68% | 2904 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 30,472 psi | 50% | 2726 fps | 98% |
| Somchem S385 | <<locked>> | 92% | 42,395 psi | 70% | 2953 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 50,908 psi | 84% | 2953 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,021 psi | 77% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,413 psi | 78% | 2959 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,247 psi | 64% | 2825 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 35,273 psi | 58% | 2782 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 98% | 44,556 psi | 73% | 2982 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 45,934 psi | 75% | 2949 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,867 psi | 57% | 2782 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 84% | 30,139 psi | 49% | 2717 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,867 psi | 57% | 2753 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 41,292 psi | 68% | 2959 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,949 psi | 46% | 2720 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,994 psi | 80% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,501 psi | 80% | 3064 fps | 95.6% |
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 93 powders for .300 Blaser Mag. loaded with the .308 | 147gr | Armscor FMJ. Alliant Reloder-26 delivers the highest muzzle velocity at 3,317 fps; across all powders the maximum-charge window runs from 1,988 fps to 3,317 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 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 147.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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. Alliant Reloder-16, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .300 Blaser Mag. with the .308 | 147gr | Armscor FMJ 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.