Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 220gr | Lapua ScenarL bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Accurate MAGPRO.
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% | 53,911 psi | 89% | 2631 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 51,938 psi | 85% | 2612 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 51,750 psi | 85% | 2726 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 92% | 52,359 psi | 86% | 2726 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 52,518 psi | 86% | 2664 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 53,867 psi | 88% | 2726 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,124 psi | 79% | 2631 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,786 psi | 70% | 2602 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 52,895 psi | 87% | 2664 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,837 psi | 87% | 2661 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,780 psi | 88% | 2674 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 52,257 psi | 86% | 2657 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 53,853 psi | 88% | 2723 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,998 psi | 90% | 2690 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,998 psi | 89% | 2749 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,085 psi | 90% | 2776 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,431 psi | 86% | 2638 fps | 96.7% |
| Bofors RP15 | <<locked>> | 96% | 52,808 psi | 87% | 2707 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,038 psi | 82% | 2700 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 53,853 psi | 88% | 2723 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 54,607 psi | 90% | 2612 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,968 psi | 87% | 2710 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 53,606 psi | 88% | 2661 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 52,866 psi | 87% | 2621 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 53,737 psi | 88% | 2664 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,794 psi | 87% | 2651 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,098 psi | 87% | 2589 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,939 psi | 87% | 2822 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 53,664 psi | 88% | 2697 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,188 psi | 61% | 1631 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,576 psi | 86% | 2598 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,562 psi | 86% | 2582 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 52,315 psi | 86% | 2602 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,056 psi | 90% | 2651 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 94% | 51,677 psi | 85% | 2703 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 38,406 psi | 63% | 2513 fps | 96.7% |
| Lovex S065 | <<locked>> | 84% | 53,301 psi | 88% | 2582 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,766 psi | 90% | 2628 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,897 psi | 90% | 2644 fps | 100% |
| Norma 204 | <<locked>> | 86% | 53,185 psi | 87% | 2651 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 38,450 psi | 63% | 2536 fps | 98.8% |
| Norma MRP | <<locked>> | 92% | 53,519 psi | 88% | 2743 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,041 psi | 89% | 2644 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 52,069 psi | 85% | 2720 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 52,736 psi | 87% | 2651 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 53,954 psi | 89% | 2713 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,855 psi | 62% | 1667 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 51,721 psi | 85% | 2631 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,679 psi | 88% | 2713 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,403 psi | 88% | 2818 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,182 psi | 79% | 2713 fps | 98% |
| Rottweil R 904 | <<locked>> | 90% | 54,041 psi | 89% | 2638 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 92% | 55,071 psi | 90% | 2697 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 54,607 psi | 90% | 2612 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,301 psi | 88% | 2582 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,766 psi | 90% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 52,257 psi | 86% | 2536 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,636 psi | 90% | 2690 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 51,764 psi | 85% | 2582 fps | 98.5% |
| Somchem S365 | <<locked>> | 88% | 54,317 psi | 89% | 2644 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,199 psi | 86% | 2621 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 53,243 psi | 87% | 2526 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 52,315 psi | 86% | 2585 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 51,605 psi | 85% | 2602 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 54,839 psi | 90% | 2641 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,679 psi | 88% | 2667 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,432 psi | 88% | 2740 fps | 99% |
| Vihtavuori N565 | <<locked>> | 98% | 53,055 psi | 87% | 2720 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,588 psi | 81% | 2717 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,969 psi | 90% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,809 psi | 88% | 2664 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 52,083 psi | 86% | 2769 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 51,851 psi | 85% | 2615 fps | 99.6% |
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% | 33,895 psi | 56% | 2290 fps | 98.4% |
| Accurate 4350 | <<locked>> | 80% | 45,469 psi | 75% | 2513 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 36,492 psi | 60% | 2438 fps | 95.8% |
| Accurate MAGPRO | 65.4 gr | 84% | 39,653 psi | 65% | 2500 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 37,782 psi | 62% | 2402 fps | 97.2% |
| ADI AR 2213 | <<locked>> | 82% | 36,129 psi | 59% | 2395 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 92% | 37,028 psi | 61% | 2415 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 88% | 29,327 psi | 48% | 2277 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,290 psi | 63% | 2408 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,410 psi | 71% | 2516 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,024 psi | 82% | 2621 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,942 psi | 62% | 2402 fps | 97.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 33,707 psi | 55% | 2349 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,503 psi | 53% | 2316 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,282 psi | 46% | 2238 fps | 97.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,375 psi | 58% | 2448 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 46,412 psi | 76% | 2536 fps | 95.1% |
| Bofors RP15 | <<locked>> | 82% | 33,605 psi | 55% | 2346 fps | 95.8% |
| Bofors RP30 | <<locked>> | 88% | 33,460 psi | 55% | 2379 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 33,707 psi | 55% | 2349 fps | 96.1% |
| Bofors RP7 | <<locked>> | 80% | 48,182 psi | 79% | 2513 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 88% | 35,520 psi | 58% | 2382 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 47,007 psi | 77% | 2559 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 49,574 psi | 81% | 2569 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 38,537 psi | 63% | 2398 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 82% | 37,855 psi | 62% | 2385 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,162 psi | 68% | 2411 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 31,415 psi | 52% | 2362 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 46,253 psi | 76% | 2582 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,760 psi | 46% | 1453 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,540 psi | 71% | 2451 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,545 psi | 81% | 2536 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 43,250 psi | 71% | 2464 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 37,797 psi | 62% | 2346 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 84% | 37,130 psi | 61% | 2428 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 36,056 psi | 59% | 2461 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 47,079 psi | 77% | 2490 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 45,339 psi | 74% | 2480 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 29,240 psi | 48% | 2178 fps | 97% |
| Norma 204 | <<locked>> | 80% | 43,555 psi | 72% | 2493 fps | 98.4% |
| Norma 217 | <<locked>> | 92% | 29,660 psi | 49% | 2320 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 35,128 psi | 58% | 2411 fps | 98% |
| Norma URP | <<locked>> | 80% | 44,483 psi | 73% | 2497 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 36,535 psi | 60% | 2431 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 43,366 psi | 71% | 2500 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 30,429 psi | 50% | 2270 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,427 psi | 47% | 1490 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,295 psi | 74% | 2536 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,410 psi | 71% | 2552 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 82% | 28,427 psi | 47% | 2277 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 38,798 psi | 64% | 2533 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 39,189 psi | 64% | 2382 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 80% | 37,173 psi | 61% | 2385 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 80% | 48,182 psi | 79% | 2513 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,079 psi | 77% | 2490 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 45,339 psi | 74% | 2480 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,035 psi | 76% | 2441 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,854 psi | 61% | 2382 fps | 97.1% |
| Somchem S361 | <<locked>> | 80% | 39,856 psi | 65% | 2375 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 41,423 psi | 68% | 2457 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,753 psi | 62% | 2372 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 80% | 49,864 psi | 82% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,021 psi | 76% | 2493 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 32,750 psi | 54% | 2257 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 80% | 45,194 psi | 74% | 2497 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,419 psi | 60% | 2382 fps | 99.9% |
| Vihtavuori N560 | 62.6 gr | 82% | 37,884 psi | 62% | 2457 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 88% | 37,956 psi | 62% | 2451 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 94% | 40,306 psi | 66% | 2546 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,817 psi | 74% | 2454 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,210 psi | 78% | 2562 fps | 99.8% |
| Winchester StaBALL HD | 60.5 gr | 80% | 28,834 psi | 47% | 2343 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,403 psi | 56% | 2300 fps | 96.1% |
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 73 powders for .300 Blaser Mag. loaded with the .308 | 220gr | Lapua ScenarL. Hodgdon Retumbo delivers the highest muzzle velocity at 2,822 fps; across all powders the maximum-charge window runs from 1,631 fps to 2,822 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 220.0 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. Winchester StaBALL HD, Vihtavuori N560, Accurate MAGPRO rank at the top here: for .300 Blaser Mag. with the .308 | 220gr | Lapua ScenarL 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.