Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 210gr | Nosler RDF bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and IMR 7828 SSC.
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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 51,605 psi | 85% | 2657 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 53,403 psi | 88% | 2690 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 53,461 psi | 88% | 2802 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 82% | 54,998 psi | 90% | 2651 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,983 psi | 89% | 2746 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 96% | 55,100 psi | 90% | 2802 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,108 psi | 76% | 2648 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,944 psi | 67% | 2615 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,998 psi | 89% | 2740 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 51,517 psi | 85% | 2707 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,432 psi | 88% | 2733 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,868 psi | 90% | 2799 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 52,301 psi | 86% | 2717 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,561 psi | 85% | 2776 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,272 psi | 86% | 2802 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,911 psi | 89% | 2713 fps | 96.3% |
| Bofors RP15 | <<locked>> | 98% | 53,795 psi | 88% | 2782 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,543 psi | 78% | 2717 fps | 98.6% |
| Bofors RP5 | <<locked>> | 96% | 54,868 psi | 90% | 2799 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 52,823 psi | 87% | 2641 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,763 psi | 83% | 2730 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 86% | 55,042 psi | 90% | 2743 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 54,462 psi | 89% | 2703 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 51,634 psi | 85% | 2687 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,056 psi | 89% | 2726 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,331 psi | 89% | 2664 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,575 psi | 83% | 2838 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 51,387 psi | 84% | 2723 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,912 psi | 61% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,085 psi | 89% | 2680 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,259 psi | 89% | 2664 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 53,679 psi | 88% | 2684 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,185 psi | 87% | 2677 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 96% | 53,011 psi | 87% | 2782 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 54,679 psi | 90% | 2661 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,823 psi | 87% | 2657 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,576 psi | 86% | 2674 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,694 psi | 90% | 2733 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 36,506 psi | 60% | 2546 fps | 97.8% |
| Norma MRP | <<locked>> | 94% | 54,650 psi | 90% | 2818 fps | 100% |
| Norma URP | <<locked>> | 86% | 51,996 psi | 85% | 2677 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,374 psi | 88% | 2799 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 54,114 psi | 89% | 2730 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 51,401 psi | 84% | 2733 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,768 psi | 62% | 1703 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,737 psi | 90% | 2743 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,229 psi | 87% | 2713 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,998 psi | 90% | 2792 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,647 psi | 83% | 2835 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 45,730 psi | 75% | 2723 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 82% | 53,896 psi | 88% | 2641 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 51,880 psi | 85% | 2661 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 52,866 psi | 87% | 2723 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 52,823 psi | 87% | 2641 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,679 psi | 90% | 2661 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,823 psi | 87% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,128 psi | 89% | 2516 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,969 psi | 89% | 2618 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,431 psi | 86% | 2717 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 53,563 psi | 88% | 2631 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,330 psi | 88% | 2657 fps | 98.3% |
| Somchem S365 | <<locked>> | 88% | 51,967 psi | 85% | 2677 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,534 psi | 88% | 2697 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 54,679 psi | 90% | 2605 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,824 psi | 88% | 2667 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,953 psi | 87% | 2680 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 52,837 psi | 87% | 2674 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,911 psi | 90% | 2746 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,650 psi | 90% | 2818 fps | 98.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,099 psi | 89% | 2795 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 47,224 psi | 78% | 2733 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,895 psi | 87% | 2628 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 51,779 psi | 85% | 2694 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 52,823 psi | 87% | 2848 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,301 psi | 88% | 2694 fps | 99.5% |
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 3100 | <<locked>> | 80% | 32,358 psi | 53% | 2306 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 43,555 psi | 72% | 2539 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 40,437 psi | 66% | 2569 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 51,779 psi | 85% | 2605 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,477 psi | 60% | 2421 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 86% | 39,508 psi | 65% | 2516 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 94% | 37,985 psi | 62% | 2480 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 90% | 29,834 psi | 49% | 2333 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,698 psi | 68% | 2543 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,892 psi | 79% | 2654 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,419 psi | 60% | 2421 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,505 psi | 57% | 2418 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,038 psi | 51% | 2333 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,224 psi | 45% | 2247 fps | 95.9% |
| Alliant Reloder-26 | 62.9 gr | 80% | 33,605 psi | 55% | 2461 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,560 psi | 83% | 2657 fps | 95.5% |
| Bofors RP15 | <<locked>> | 84% | 34,214 psi | 56% | 2411 fps | 95.4% |
| Bofors RP30 | <<locked>> | 92% | 36,332 psi | 60% | 2497 fps | 95.6% |
| Bofors RP5 | <<locked>> | 82% | 34,505 psi | 57% | 2418 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 46,601 psi | 77% | 2539 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 36,289 psi | 60% | 2448 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 45,179 psi | 74% | 2585 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 47,834 psi | 79% | 2595 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 39,595 psi | 65% | 2470 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,408 psi | 68% | 2510 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,450 psi | 65% | 2438 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 32,111 psi | 53% | 2428 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 44,266 psi | 73% | 2605 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,688 psi | 45% | 1486 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,148 psi | 69% | 2480 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,964 psi | 79% | 2566 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 41,510 psi | 68% | 2490 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 38,899 psi | 64% | 2421 fps | 95.1% |
| IMR 7828 SSC | 63.1 gr | 86% | 37,927 psi | 62% | 2497 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 45,527 psi | 75% | 2516 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 43,714 psi | 72% | 2507 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 27,905 psi | 46% | 2192 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 41,872 psi | 69% | 2513 fps | 97.6% |
| Norma 217 | <<locked>> | 94% | 30,168 psi | 50% | 2379 fps | 95% |
| Norma MRP | <<locked>> | 80% | 33,518 psi | 55% | 2425 fps | 96.8% |
| Norma URP | <<locked>> | 80% | 42,728 psi | 70% | 2526 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 37,420 psi | 61% | 2500 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 41,640 psi | 68% | 2526 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 84% | 31,096 psi | 51% | 2333 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,326 psi | 47% | 1522 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,821 psi | 83% | 2690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,366 psi | 71% | 2559 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,568 psi | 68% | 2575 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 31,053 psi | 51% | 2402 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 42,482 psi | 70% | 2661 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 50,430 psi | 83% | 2592 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 37,724 psi | 62% | 2402 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 35,592 psi | 58% | 2402 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 80% | 46,601 psi | 77% | 2539 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,527 psi | 75% | 2516 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 43,714 psi | 72% | 2507 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,865 psi | 84% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,498 psi | 73% | 2467 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,273 psi | 58% | 2398 fps | 96% |
| Somchem S355 | <<locked>> | 80% | 50,415 psi | 83% | 2589 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 40,915 psi | 67% | 2444 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 39,711 psi | 65% | 2487 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,201 psi | 59% | 2388 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 48,138 psi | 79% | 2516 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,280 psi | 73% | 2523 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 31,343 psi | 51% | 2274 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 43,482 psi | 71% | 2523 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 34,766 psi | 57% | 2402 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 84% | 38,928 psi | 64% | 2530 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 90% | 38,638 psi | 63% | 2520 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 98% | 43,918 psi | 72% | 2671 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,062 psi | 71% | 2484 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,382 psi | 75% | 2589 fps | 99.5% |
| Winchester StaBALL HD | 60.4 gr | 80% | 27,499 psi | 45% | 2349 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,288 psi | 58% | 2372 fps | 95.8% |
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 80 powders for .300 Blaser Mag. loaded with the .308 | 210gr | Nosler RDF. Winchester StaBALL HD delivers the highest muzzle velocity at 2,848 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,848 fps. ADI AR 2217 gives the best case fill at 100 %, and 80 of the 80 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 210.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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-26, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for .300 Blaser Mag. with the .308 | 210gr | Nosler RDF they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 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.