Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 200gr | Lapua Subsonic bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Ramshot Grand and Winchester StaBALL HD.
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>> | 96% | 54,737 psi | 90% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 52,968 psi | 87% | 2759 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 53,243 psi | 87% | 2871 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 82% | 54,520 psi | 90% | 2720 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,563 psi | 88% | 2812 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 96% | 54,810 psi | 90% | 2871 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,788 psi | 75% | 2707 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,582 psi | 67% | 2671 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 53,824 psi | 88% | 2808 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,592 psi | 88% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,592 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,156 psi | 87% | 2802 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,549 psi | 90% | 2867 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 51,938 psi | 85% | 2785 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,169 psi | 84% | 2841 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 51,808 psi | 85% | 2871 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,490 psi | 88% | 2772 fps | 95.9% |
| Bofors RP15 | <<locked>> | 98% | 53,490 psi | 88% | 2848 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,094 psi | 77% | 2779 fps | 98.2% |
| Bofors RP5 | <<locked>> | 96% | 54,549 psi | 90% | 2867 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 52,446 psi | 86% | 2707 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,517 psi | 83% | 2795 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 86% | 54,534 psi | 90% | 2808 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 53,896 psi | 88% | 2766 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 54,839 psi | 90% | 2808 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,896 psi | 88% | 2795 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,099 psi | 89% | 2736 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,096 psi | 82% | 2904 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 54,766 psi | 90% | 2848 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,912 psi | 61% | 1716 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,679 psi | 88% | 2746 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,867 psi | 88% | 2730 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 53,200 psi | 87% | 2749 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 52,779 psi | 87% | 2743 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 96% | 52,533 psi | 86% | 2844 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 54,201 psi | 89% | 2726 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,533 psi | 86% | 2726 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,170 psi | 86% | 2740 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,259 psi | 89% | 2799 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 36,216 psi | 59% | 2602 fps | 97.3% |
| Norma MRP | <<locked>> | 94% | 54,288 psi | 89% | 2890 fps | 100% |
| Norma URP | <<locked>> | 88% | 54,868 psi | 90% | 2792 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 52,910 psi | 87% | 2864 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 53,679 psi | 88% | 2799 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,969 psi | 90% | 2858 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,710 psi | 62% | 1759 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,273 psi | 89% | 2812 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 52,823 psi | 87% | 2782 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,636 psi | 90% | 2861 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,531 psi | 83% | 2900 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 45,339 psi | 74% | 2782 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 82% | 53,490 psi | 88% | 2710 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,013 psi | 90% | 2782 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 52,649 psi | 86% | 2792 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 84% | 52,446 psi | 86% | 2707 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,201 psi | 89% | 2726 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,533 psi | 86% | 2726 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,897 psi | 90% | 2766 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,780 psi | 88% | 2589 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,621 psi | 88% | 2684 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,214 psi | 86% | 2785 fps | 99.3% |
| Somchem S355 | <<locked>> | 82% | 53,272 psi | 87% | 2703 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,953 psi | 87% | 2723 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 54,998 psi | 90% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,997 psi | 87% | 2762 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 54,462 psi | 89% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,432 psi | 88% | 2736 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,504 psi | 86% | 2743 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 52,562 psi | 86% | 2743 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,346 psi | 89% | 2812 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,302 psi | 89% | 2884 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,737 psi | 88% | 2861 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 46,775 psi | 77% | 2792 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,634 psi | 86% | 2697 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,781 psi | 90% | 2812 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 52,170 psi | 86% | 2913 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,852 psi | 87% | 2759 fps | 99.3% |
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% | 31,981 psi | 53% | 2359 fps | 97% |
| Accurate 4350 | <<locked>> | 80% | 43,062 psi | 71% | 2598 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 42,960 psi | 71% | 2684 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 51,416 psi | 84% | 2674 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,129 psi | 59% | 2477 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 39,349 psi | 65% | 2579 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 96% | 40,132 psi | 66% | 2592 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 92% | 31,589 psi | 52% | 2441 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,347 psi | 60% | 2480 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,481 psi | 68% | 2608 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,616 psi | 78% | 2723 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,027 psi | 59% | 2474 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,142 psi | 56% | 2474 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,719 psi | 50% | 2388 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 26,934 psi | 44% | 2293 fps | 95.1% |
| Alliant Reloder-26 | 64.9 gr | 80% | 33,272 psi | 55% | 2516 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,285 psi | 83% | 2720 fps | 95.1% |
| Bofors RP15 | <<locked>> | 86% | 36,318 psi | 60% | 2523 fps | 95.8% |
| Bofors RP30 | <<locked>> | 92% | 36,100 psi | 59% | 2552 fps | 95% |
| Bofors RP5 | <<locked>> | 82% | 34,142 psi | 56% | 2474 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 46,195 psi | 76% | 2602 fps | 99% |
| Hodgdon H1000 | <<locked>> | 92% | 38,595 psi | 63% | 2562 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 44,788 psi | 74% | 2648 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 80% | 47,543 psi | 78% | 2661 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 41,974 psi | 69% | 2585 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,249 psi | 68% | 2569 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,102 psi | 64% | 2497 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 33,910 psi | 56% | 2536 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 43,990 psi | 72% | 2671 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,601 psi | 45% | 1532 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,771 psi | 69% | 2539 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,587 psi | 78% | 2628 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 41,075 psi | 67% | 2549 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,118 psi | 68% | 2530 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 88% | 40,350 psi | 66% | 2615 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 45,150 psi | 74% | 2579 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 43,526 psi | 71% | 2572 fps | 99.1% |
| Lovex S071 | <<locked>> | 80% | 27,673 psi | 45% | 2244 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 41,510 psi | 68% | 2572 fps | 97.1% |
| Norma 217 | <<locked>> | 96% | 31,807 psi | 52% | 2484 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 33,301 psi | 55% | 2480 fps | 96.3% |
| Norma URP | <<locked>> | 80% | 42,482 psi | 70% | 2592 fps | 99.9% |
| Ramshot Grand | 68.7 gr | 88% | 39,943 psi | 66% | 2621 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 41,234 psi | 68% | 2585 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 33,156 psi | 54% | 2444 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,210 psi | 46% | 1572 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,502 psi | 83% | 2762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,873 psi | 70% | 2621 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,278 psi | 68% | 2638 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 30,864 psi | 51% | 2451 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 42,177 psi | 69% | 2717 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 50,169 psi | 82% | 2661 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,074 psi | 66% | 2516 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 80% | 35,360 psi | 58% | 2461 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 46,195 psi | 76% | 2602 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,150 psi | 74% | 2579 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 43,526 psi | 71% | 2572 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,329 psi | 84% | 2717 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,647 psi | 83% | 2546 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,237 psi | 73% | 2530 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,027 psi | 57% | 2454 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 50,038 psi | 82% | 2654 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 40,741 psi | 67% | 2503 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 39,233 psi | 64% | 2549 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,940 psi | 59% | 2448 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 80% | 47,935 psi | 79% | 2585 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,801 psi | 72% | 2582 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 33,098 psi | 54% | 2375 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 43,149 psi | 71% | 2585 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 34,519 psi | 57% | 2461 fps | 99.4% |
| Vihtavuori N560 | <<locked>> | 86% | 41,292 psi | 68% | 2648 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 92% | 41,017 psi | 67% | 2631 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 98% | 43,584 psi | 72% | 2730 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,728 psi | 70% | 2546 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,005 psi | 74% | 2651 fps | 99.2% |
| Winchester StaBALL HD | 62.3 gr | 80% | 27,238 psi | 45% | 2398 fps | 99.6% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,085 psi | 58% | 2428 fps | 95.3% |
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 77 powders for .300 Blaser Mag. loaded with the .308 | 200gr | Lapua Subsonic. Winchester StaBALL HD delivers the highest muzzle velocity at 2,913 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,913 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 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 200.0 gr projectile in 0.308" calls for a 1:11.5 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, Ramshot Grand, Winchester StaBALL HD rank at the top here: for .300 Blaser Mag. with the .308 | 200gr | Lapua Subsonic 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.