Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 130gr | Barnes X BT bullet and 82 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 Alliant Reloder-16.
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>> | 82% | 52,765 psi | 87% | 3199 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 52,953 psi | 87% | 3215 fps | 96.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,169 psi | 82% | 3248 fps | 97.6% |
| Accurate 4064 | <<locked>> | 84% | 52,852 psi | 87% | 3251 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,069 psi | 85% | 3323 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 82% | 54,230 psi | 89% | 3314 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 86% | 51,953 psi | 85% | 3255 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,737 psi | 88% | 3435 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 52,649 psi | 86% | 3287 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 52,866 psi | 87% | 3307 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 94% | 52,315 psi | 86% | 3379 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,417 psi | 88% | 3415 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,499 psi | 76% | 3268 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,069 psi | 87% | 3474 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,882 psi | 88% | 3317 fps | 99.4% |
| Bofors RP3 | <<locked>> | 86% | 53,722 psi | 88% | 3307 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 53,098 psi | 87% | 3261 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 86% | 53,954 psi | 89% | 3310 fps | 99% |
| Hodgdon H414 | <<locked>> | 92% | 53,983 psi | 89% | 3366 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 90% | 53,882 psi | 88% | 3320 fps | 96% |
| Hodgdon H4895 | <<locked>> | 82% | 54,766 psi | 90% | 3323 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 52,388 psi | 86% | 3297 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,491 psi | 89% | 3360 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,114 psi | 89% | 3396 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,230 psi | 59% | 2119 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,272 psi | 86% | 3264 fps | 99.9% |
| IMR 3031 | <<locked>> | 82% | 55,042 psi | 90% | 3314 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,679 psi | 90% | 3294 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,172 psi | 89% | 3261 fps | 97.3% |
| IMR 4350 | <<locked>> | 94% | 53,374 psi | 88% | 3287 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,447 psi | 89% | 3294 fps | 97.3% |
| IMR 4831 | <<locked>> | 94% | 52,475 psi | 86% | 3314 fps | 99.3% |
| IMR 4895 | <<locked>> | 84% | 54,157 psi | 89% | 3340 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 82% | 54,723 psi | 90% | 3291 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,142 psi | 87% | 3228 fps | 99.8% |
| Lovex S062 | <<locked>> | 84% | 52,040 psi | 85% | 3241 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,679 psi | 90% | 3297 fps | 98.6% |
| Lovex S070 | <<locked>> | 92% | 52,547 psi | 86% | 3274 fps | 97.3% |
| Norma 201 | <<locked>> | 82% | 53,577 psi | 88% | 3261 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,824 psi | 88% | 3261 fps | 100% |
| Norma 203B | <<locked>> | 84% | 52,199 psi | 86% | 3291 fps | 99.7% |
| Norma MRPᴾ | <<locked>> | 100% | 52,040 psi | 85% | 3412 fps | 97% |
| Norma URP | <<locked>> | 94% | 53,925 psi | 89% | 3363 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 84% | 52,446 psi | 86% | 3310 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 94% | 52,736 psi | 87% | 3350 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,854 psi | 61% | 2169 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,882 psi | 88% | 3284 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,229 psi | 87% | 3376 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 52,910 psi | 87% | 3415 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,926 psi | 90% | 3396 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,809 psi | 88% | 3422 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 84% | 54,143 psi | 89% | 3261 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,737 psi | 88% | 3301 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,389 psi | 89% | 3373 fps | 96% |
| Rottweil R 907 | <<locked>> | 90% | 53,098 psi | 87% | 3261 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,679 psi | 90% | 3297 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,723 psi | 90% | 3291 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 52,040 psi | 85% | 3241 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,547 psi | 86% | 3274 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,505 psi | 89% | 3353 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 52,721 psi | 87% | 3278 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,172 psi | 89% | 3189 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,592 psi | 90% | 3186 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,607 psi | 90% | 3235 fps | 97.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,867 psi | 88% | 3363 fps | 95.9% |
| Somchem S335 | <<locked>> | 82% | 54,012 psi | 89% | 3186 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,868 psi | 90% | 3294 fps | 99.9% |
| Somchem S355 | <<locked>> | 88% | 53,621 psi | 88% | 3294 fps | 99.9% |
| Somchem S365 | <<locked>> | 96% | 52,562 psi | 86% | 3369 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,170 psi | 86% | 3291 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 82% | 54,389 psi | 89% | 3173 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,983 psi | 89% | 3225 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,186 psi | 89% | 3232 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,839 psi | 90% | 3268 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 52,620 psi | 86% | 3294 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 84% | 52,663 psi | 86% | 3225 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 52,069 psi | 85% | 3301 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,112 psi | 86% | 3363 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 52,359 psi | 86% | 3258 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,983 psi | 89% | 3366 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,424 psi | 70% | 3307 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 52,663 psi | 86% | 3284 fps | 99.9% |
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% | 49,574 psi | 81% | 3146 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 49,661 psi | 82% | 3153 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 41,118 psi | 68% | 3058 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 46,760 psi | 77% | 3143 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,201 psi | 58% | 2943 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 51,010 psi | 84% | 3255 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 43,366 psi | 71% | 3077 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,007 psi | 77% | 3301 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,947 psi | 72% | 3114 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,789 psi | 77% | 3186 fps | 98.8% |
| Alliant Reloder-16 | 64 gr | 82% | 36,448 psi | 60% | 3002 fps | 95.6% |
| Alliant Reloder-17 | 67.3 gr | 80% | 38,479 psi | 63% | 3087 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 32,590 psi | 54% | 2910 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 90% | 37,594 psi | 62% | 3110 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,502 psi | 83% | 3258 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 44,338 psi | 73% | 3127 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 47,224 psi | 78% | 3146 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 44,614 psi | 73% | 3123 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 86% | 44,425 psi | 73% | 3173 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 88% | 50,691 psi | 83% | 3258 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 51,547 psi | 85% | 3264 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,981 psi | 53% | 2831 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,906 psi | 79% | 3238 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 47,079 psi | 77% | 3251 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,166 psi | 45% | 1900 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,139 psi | 81% | 3205 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 51,822 psi | 85% | 3261 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,571 psi | 75% | 3120 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,848 psi | 79% | 3136 fps | 95.9% |
| IMR 4350 | <<locked>> | 90% | 47,224 psi | 78% | 3166 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,469 psi | 75% | 3114 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 36,042 psi | 59% | 2949 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 47,892 psi | 79% | 3222 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 51,459 psi | 84% | 3235 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,198 psi | 82% | 3173 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 46,209 psi | 76% | 3130 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 40,814 psi | 67% | 3005 fps | 95.4% |
| Lovex S070 | <<locked>> | 86% | 43,990 psi | 72% | 3097 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 50,401 psi | 83% | 3205 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 50,647 psi | 83% | 3205 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,180 psi | 76% | 3173 fps | 99.1% |
| Norma MRP | <<locked>> | 96% | 45,701 psi | 75% | 3274 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 37,072 psi | 61% | 2995 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 45,963 psi | 75% | 3182 fps | 99% |
| Ramshot Hunter | <<locked>> | 86% | 40,973 psi | 67% | 3097 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,615 psi | 45% | 1946 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,643 psi | 73% | 3097 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,763 psi | 82% | 3310 fps | 99.2% |
| ReloadSwiss RS 60 | 67.3 gr | 80% | 40,712 psi | 67% | 3163 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 36,956 psi | 61% | 3015 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 38,638 psi | 63% | 3074 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 48,124 psi | 79% | 3150 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 41,872 psi | 69% | 3064 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 50,995 psi | 84% | 3307 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 86% | 47,224 psi | 78% | 3146 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,814 psi | 67% | 3005 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,459 psi | 84% | 3235 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,209 psi | 76% | 3130 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 43,990 psi | 72% | 3097 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,264 psi | 69% | 3107 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,472 psi | 81% | 3215 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,836 psi | 83% | 3133 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,946 psi | 71% | 2979 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 45,426 psi | 75% | 3058 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 50,502 psi | 83% | 3301 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 50,865 psi | 84% | 3133 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,445 psi | 84% | 3235 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 42,163 psi | 69% | 3064 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 31,691 psi | 52% | 2887 fps | 97.2% |
| Somchem S385 | <<locked>> | 96% | 49,037 psi | 81% | 3228 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 51,155 psi | 84% | 3120 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,703 psi | 78% | 3120 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,921 psi | 79% | 3127 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,190 psi | 66% | 2986 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 36,071 psi | 59% | 2933 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 46,528 psi | 76% | 3117 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 38,247 psi | 63% | 2999 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 86% | 33,547 psi | 55% | 2943 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,621 psi | 58% | 2897 fps | 97.5% |
| Winchester 760 | <<locked>> | 86% | 44,585 psi | 73% | 3176 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 31,154 psi | 51% | 2943 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,356 psi | 81% | 3222 fps | 99.7% |
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 82 powders for .300 Blaser Mag. loaded with the .308 | 130gr | Barnes X BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,474 fps; across all powders the maximum-charge window runs from 2,119 fps to 3,474 fps. Accurate 3100 gives the best case fill at 100 %, and 82 of the 82 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 130.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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, Alliant Reloder-16 rank at the top here: for .300 Blaser Mag. with the .308 | 130gr | Barnes X BT 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.