Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 220gr | Rhino Solid Shank bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Accurate MAGPRO and Accurate High Country.
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% | 54,201 psi | 89% | 2638 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 52,301 psi | 86% | 2615 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 51,808 psi | 85% | 2726 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 92% | 52,620 psi | 86% | 2730 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 52,837 psi | 87% | 2671 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 54,143 psi | 89% | 2730 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,356 psi | 79% | 2638 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,033 psi | 71% | 2605 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 53,200 psi | 87% | 2664 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,896 psi | 88% | 2674 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 52,547 psi | 86% | 2661 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,114 psi | 89% | 2726 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,056 psi | 90% | 2690 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,259 psi | 89% | 2753 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 51,416 psi | 84% | 2726 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,605 psi | 86% | 2644 fps | 96.7% |
| Bofors RP15 | <<locked>> | 96% | 53,098 psi | 87% | 2713 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,299 psi | 83% | 2703 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 54,114 psi | 89% | 2726 fps | 99.9% |
| Bofors RP7 | <<locked>> | 84% | 54,694 psi | 90% | 2612 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,200 psi | 87% | 2713 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 53,896 psi | 88% | 2664 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 52,968 psi | 87% | 2621 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 54,012 psi | 89% | 2671 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 53,084 psi | 87% | 2654 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,447 psi | 88% | 2592 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,200 psi | 87% | 2825 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 53,940 psi | 89% | 2700 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,202 psi | 61% | 1631 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,852 psi | 87% | 2602 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,881 psi | 87% | 2585 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 52,591 psi | 86% | 2605 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 51,953 psi | 85% | 2605 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 94% | 51,967 psi | 85% | 2707 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 38,624 psi | 63% | 2516 fps | 96.8% |
| Lovex S065 | <<locked>> | 84% | 53,388 psi | 88% | 2582 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,795 psi | 90% | 2628 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 51,822 psi | 85% | 2602 fps | 100% |
| Norma 204 | <<locked>> | 86% | 53,476 psi | 88% | 2654 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 38,667 psi | 63% | 2543 fps | 98.9% |
| Norma MRP | <<locked>> | 92% | 53,795 psi | 88% | 2746 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,143 psi | 89% | 2644 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 52,359 psi | 86% | 2726 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 53,055 psi | 87% | 2657 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,273 psi | 89% | 2717 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,072 psi | 63% | 1673 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 52,011 psi | 85% | 2638 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,751 psi | 88% | 2710 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,664 psi | 88% | 2822 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,428 psi | 80% | 2717 fps | 98% |
| Rottweil R 904 | <<locked>> | 90% | 54,099 psi | 89% | 2641 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 51,996 psi | 85% | 2651 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 54,694 psi | 90% | 2612 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,388 psi | 88% | 2582 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,795 psi | 90% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 52,533 psi | 86% | 2543 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,955 psi | 90% | 2697 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 51,953 psi | 85% | 2582 fps | 98.5% |
| Somchem S365 | <<locked>> | 88% | 54,418 psi | 89% | 2644 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,475 psi | 86% | 2625 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 53,301 psi | 88% | 2526 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 52,649 psi | 86% | 2592 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 51,866 psi | 85% | 2608 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 51,721 psi | 85% | 2598 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,998 psi | 89% | 2671 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,708 psi | 88% | 2743 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 98% | 53,301 psi | 88% | 2723 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,821 psi | 82% | 2723 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 51,561 psi | 85% | 2549 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,896 psi | 88% | 2664 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 52,431 psi | 86% | 2772 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,127 psi | 86% | 2621 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% | 33,997 psi | 56% | 2290 fps | 98.5% |
| Accurate 4350 | <<locked>> | 80% | 45,556 psi | 75% | 2513 fps | 100% |
| Accurate High Country | 61.4 gr | 80% | 36,738 psi | 60% | 2444 fps | 95.9% |
| Accurate MAGPRO | 65.6 gr | 84% | 39,711 psi | 65% | 2500 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 38,058 psi | 62% | 2405 fps | 97.3% |
| ADI AR 2213 | <<locked>> | 82% | 36,201 psi | 59% | 2395 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 92% | 37,217 psi | 61% | 2418 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 88% | 29,370 psi | 48% | 2277 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,758 psi | 72% | 2520 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,372 psi | 83% | 2625 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,043 psi | 62% | 2405 fps | 97.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 33,808 psi | 56% | 2352 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,590 psi | 54% | 2316 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,485 psi | 47% | 2241 fps | 97.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,462 psi | 58% | 2448 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 46,601 psi | 77% | 2539 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 31,633 psi | 52% | 2297 fps | 95% |
| Bofors RP30 | <<locked>> | 88% | 33,692 psi | 55% | 2382 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 33,808 psi | 56% | 2352 fps | 96.1% |
| Bofors RP7 | <<locked>> | 80% | 48,298 psi | 79% | 2513 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 88% | 35,578 psi | 58% | 2385 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 47,094 psi | 77% | 2559 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 49,647 psi | 82% | 2572 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 38,609 psi | 63% | 2402 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 82% | 37,913 psi | 62% | 2385 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,263 psi | 68% | 2411 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 31,633 psi | 52% | 2369 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 46,543 psi | 76% | 2589 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 46% | 1453 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,787 psi | 72% | 2457 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,647 psi | 82% | 2536 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 43,352 psi | 71% | 2464 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 38,014 psi | 62% | 2352 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 84% | 37,217 psi | 61% | 2431 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 96% | 33,939 psi | 56% | 2408 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 47,195 psi | 77% | 2490 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 45,614 psi | 75% | 2487 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 29,356 psi | 48% | 2182 fps | 97% |
| Norma 204 | <<locked>> | 80% | 43,656 psi | 72% | 2493 fps | 98.4% |
| Norma 217 | <<locked>> | 92% | 29,834 psi | 49% | 2323 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 35,404 psi | 58% | 2418 fps | 98% |
| Norma URP | <<locked>> | 80% | 44,773 psi | 74% | 2503 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 34,330 psi | 56% | 2379 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 43,439 psi | 71% | 2503 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 30,487 psi | 50% | 2270 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 47% | 1490 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,397 psi | 75% | 2536 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,482 psi | 71% | 2552 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 82% | 28,587 psi | 47% | 2283 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 38,986 psi | 64% | 2536 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 39,479 psi | 65% | 2388 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 80% | 37,449 psi | 61% | 2392 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 80% | 48,298 psi | 79% | 2513 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,195 psi | 77% | 2490 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 45,614 psi | 75% | 2487 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,137 psi | 76% | 2444 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,115 psi | 61% | 2385 fps | 97.2% |
| Somchem S361 | <<locked>> | 80% | 39,914 psi | 66% | 2375 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 41,727 psi | 69% | 2461 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,855 psi | 62% | 2372 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 80% | 50,183 psi | 82% | 2487 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,137 psi | 76% | 2493 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 32,822 psi | 54% | 2260 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 80% | 45,513 psi | 75% | 2500 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,709 psi | 60% | 2385 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 38,130 psi | 63% | 2461 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 86% | 35,549 psi | 58% | 2398 fps | 95% |
| Vihtavuori N568 | <<locked>> | 94% | 40,509 psi | 67% | 2549 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,092 psi | 74% | 2457 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,326 psi | 78% | 2566 fps | 99.8% |
| Winchester StaBALL HD | 60.7 gr | 80% | 28,906 psi | 47% | 2343 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,635 psi | 57% | 2306 fps | 96.2% |
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 | 220gr | Rhino Solid Shank. Hodgdon Retumbo delivers the highest muzzle velocity at 2,825 fps; across all powders the maximum-charge window runs from 1,631 fps to 2,825 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 61–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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, Accurate MAGPRO, Accurate High Country rank at the top here: for .300 Blaser Mag. with the .308 | 220gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-33, IMR 7977 Enduron 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.