Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 190gr | Nosler Custom Competition bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and ADI AR 2213.
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% | 52,591 psi | 86% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,534 psi | 90% | 2851 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 53,809 psi | 88% | 2956 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 96% | 54,650 psi | 90% | 2959 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 53,113 psi | 87% | 2766 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,114 psi | 90% | 2900 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 96% | 52,823 psi | 87% | 2900 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,063 psi | 72% | 2730 fps | 96.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,102 psi | 64% | 2694 fps | 98.1% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 51,938 psi | 85% | 2844 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,056 psi | 89% | 2789 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 51,721 psi | 85% | 2854 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,562 psi | 86% | 2867 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,665 psi | 90% | 2890 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,330 psi | 86% | 2897 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,156 psi | 87% | 2874 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,066 psi | 81% | 2874 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,098 psi | 87% | 2959 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,781 psi | 90% | 2936 fps | 99.3% |
| Bofors RP3 | <<locked>> | 82% | 54,984 psi | 90% | 2805 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,121 psi | 74% | 2805 fps | 97.3% |
| Bofors RP5 | <<locked>> | 96% | 52,330 psi | 86% | 2897 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 54,027 psi | 89% | 2799 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,559 psi | 80% | 2818 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 86% | 52,707 psi | 87% | 2848 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 52,301 psi | 86% | 2808 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 52,823 psi | 87% | 2841 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,924 psi | 85% | 2825 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 51,982 psi | 85% | 2776 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,182 psi | 79% | 2930 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 86% | 52,620 psi | 86% | 2881 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,869 psi | 61% | 1762 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 51,996 psi | 85% | 2785 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,402 psi | 86% | 2772 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 54,766 psi | 90% | 2841 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,375 psi | 89% | 2828 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 98% | 54,157 psi | 89% | 2936 fps | 98.4% |
| Lovex S065 | <<locked>> | 86% | 52,678 psi | 86% | 2769 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 53,983 psi | 89% | 2815 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,082 psi | 82% | 2772 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 52,417 psi | 86% | 2835 fps | 98.8% |
| Norma MRP | <<locked>> | 94% | 51,982 psi | 85% | 2923 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 53,040 psi | 87% | 2835 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,563 psi | 90% | 2953 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 51,793 psi | 85% | 2838 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,707 psi | 87% | 2890 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,637 psi | 62% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,810 psi | 90% | 2812 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 51,982 psi | 85% | 2858 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,201 psi | 89% | 2874 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,533 psi | 86% | 2900 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,254 psi | 79% | 2923 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 55,085 psi | 90% | 2802 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,243 psi | 87% | 2818 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 54,114 psi | 89% | 2881 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 54,027 psi | 89% | 2799 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,678 psi | 86% | 2769 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 53,983 psi | 89% | 2815 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,939 psi | 87% | 2808 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,199 psi | 86% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,025 psi | 85% | 2723 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,664 psi | 88% | 2874 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 54,853 psi | 90% | 2795 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,621 psi | 90% | 2808 fps | 97.7% |
| Somchem S365 | <<locked>> | 90% | 52,866 psi | 87% | 2838 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,665 psi | 90% | 2854 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 52,663 psi | 86% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,085 psi | 90% | 2828 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,882 psi | 88% | 2828 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 88% | 54,128 psi | 89% | 2835 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,214 psi | 86% | 2851 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,054 psi | 85% | 2913 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,372 psi | 84% | 2887 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,317 psi | 89% | 2789 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,881 psi | 87% | 2851 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,156 psi | 87% | 3005 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,592 psi | 90% | 2848 fps | 99.1% |
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% | 30,719 psi | 50% | 2382 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 41,481 psi | 68% | 2635 fps | 99.8% |
| Accurate High Country | <<locked>> | 86% | 40,785 psi | 67% | 2713 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 90% | 44,280 psi | 73% | 2772 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 49,879 psi | 82% | 2717 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,318 psi | 61% | 2562 fps | 95.3% |
| ADI AR 2213 | 69 gr | 90% | 43,207 psi | 71% | 2720 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 98% | 41,263 psi | 68% | 2671 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 94% | 32,329 psi | 53% | 2513 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 37,492 psi | 62% | 2562 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,778 psi | 83% | 2740 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,929 psi | 66% | 2641 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,803 psi | 75% | 2762 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,144 psi | 61% | 2556 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,434 psi | 61% | 2608 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,588 psi | 49% | 2415 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,486 psi | 48% | 2425 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,720 psi | 52% | 2533 fps | 97.8% |
| Bofors RP15 | <<locked>> | 88% | 37,115 psi | 61% | 2602 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 51,329 psi | 84% | 2753 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 39,407 psi | 65% | 2687 fps | 95.5% |
| Bofors RP5 | <<locked>> | 86% | 37,434 psi | 61% | 2608 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 44,947 psi | 74% | 2641 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 39,653 psi | 65% | 2641 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 43,294 psi | 71% | 2680 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 45,905 psi | 75% | 2694 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 43,207 psi | 71% | 2667 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,353 psi | 74% | 2710 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,594 psi | 62% | 2533 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,173 psi | 61% | 2677 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 42,293 psi | 69% | 2700 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,456 psi | 45% | 1572 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,495 psi | 66% | 2575 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,311 psi | 76% | 2667 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 39,682 psi | 65% | 2585 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 42,453 psi | 70% | 2615 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 90% | 41,481 psi | 68% | 2697 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 43,888 psi | 72% | 2621 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 42,032 psi | 69% | 2605 fps | 98.5% |
| Lovex S071 | <<locked>> | 84% | 30,153 psi | 50% | 2365 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 40,132 psi | 66% | 2605 fps | 96.1% |
| Norma MRP | 64.9 gr | 82% | 34,185 psi | 56% | 2559 fps | 96% |
| Norma URP | <<locked>> | 80% | 40,901 psi | 67% | 2625 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 41,002 psi | 67% | 2700 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 39,784 psi | 65% | 2618 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 88% | 34,113 psi | 56% | 2523 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,036 psi | 46% | 1608 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,343 psi | 84% | 2756 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,602 psi | 80% | 2805 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,263 psi | 68% | 2654 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,624 psi | 65% | 2664 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,055 psi | 56% | 2595 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 48,443 psi | 80% | 2703 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,234 psi | 68% | 2598 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 82% | 36,274 psi | 60% | 2539 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 44,947 psi | 74% | 2641 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,888 psi | 72% | 2621 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 42,032 psi | 69% | 2605 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,734 psi | 82% | 2759 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,153 psi | 81% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,830 psi | 70% | 2566 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 35,940 psi | 59% | 2533 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 48,588 psi | 80% | 2700 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 44,904 psi | 74% | 2644 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 37,681 psi | 62% | 2585 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,505 psi | 57% | 2470 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 46,340 psi | 76% | 2625 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,380 psi | 70% | 2621 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 86% | 36,332 psi | 60% | 2507 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 41,756 psi | 69% | 2621 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 32,996 psi | 54% | 2487 fps | 98.8% |
| Vihtavuori N560 | 69.7 gr | 88% | 42,496 psi | 70% | 2733 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 94% | 41,829 psi | 69% | 2710 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,307 psi | 68% | 2585 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,294 psi | 71% | 2680 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,194 psi | 43% | 2408 fps | 98.6% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,129 psi | 59% | 2507 fps | 95% |
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 | 190gr | Nosler Custom Competition. Winchester StaBALL HD delivers the highest muzzle velocity at 3,005 fps; across all powders the maximum-charge window runs from 1,762 fps to 3,005 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 190.0 gr projectile in 0.308" calls for a 1:12.5 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. Norma MRP, Vihtavuori N560, ADI AR 2213 rank at the top here: for .300 Blaser Mag. with the .308 | 190gr | Nosler Custom Competition 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.