Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 212gr | Barnes LRX BT Bore Rider bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 56,710 psi | 89% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,157 psi | 85% | 2697 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 55,405 psi | 87% | 2825 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 88% | 54,839 psi | 86% | 2756 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 56,478 psi | 89% | 2825 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,331 psi | 85% | 2792 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,849 psi | 77% | 2756 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,129 psi | 86% | 2746 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,447 psi | 85% | 2746 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,753 psi | 89% | 2818 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,621 psi | 86% | 2733 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,725 psi | 90% | 2844 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,752 psi | 86% | 2815 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 50,908 psi | 80% | 2808 fps | 96.6% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,464 psi | 90% | 2785 fps | 97.9% |
| Bofors RP15 | <<locked>> | 94% | 55,927 psi | 88% | 2805 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,363 psi | 90% | 2858 fps | 99.9% |
| Bofors RP5 | <<locked>> | 92% | 56,753 psi | 89% | 2818 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 55,825 psi | 87% | 2694 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 56,086 psi | 88% | 2818 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 55,651 psi | 87% | 2749 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 56,159 psi | 88% | 2762 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,085 psi | 86% | 2746 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,434 psi | 87% | 2674 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,637 psi | 89% | 2927 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,898 psi | 88% | 2782 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,478 psi | 59% | 1706 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,624 psi | 90% | 2733 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,261 psi | 90% | 2713 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,520 psi | 85% | 2687 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,956 psi | 89% | 2743 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 92% | 54,607 psi | 86% | 2805 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,382 psi | 70% | 2667 fps | 98.3% |
| Lovex S065 | <<locked>> | 82% | 54,650 psi | 86% | 2664 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,420 psi | 88% | 2713 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,505 psi | 85% | 2694 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,027 psi | 86% | 2736 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 44,904 psi | 70% | 2697 fps | 99.7% |
| Norma MRP | <<locked>> | 90% | 56,579 psi | 89% | 2835 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,086 psi | 88% | 2726 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 55,332 psi | 87% | 2825 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 54,810 psi | 86% | 2736 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,711 psi | 90% | 2815 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,290 psi | 60% | 1745 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,230 psi | 85% | 2720 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,202 psi | 88% | 2799 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 57,406 psi | 90% | 2923 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,492 psi | 89% | 2884 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 88% | 55,898 psi | 88% | 2730 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 90% | 57,711 psi | 90% | 2792 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 55,825 psi | 87% | 2694 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,650 psi | 86% | 2664 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,420 psi | 88% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,087 psi | 89% | 2667 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,276 psi | 90% | 2785 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 57,203 psi | 90% | 2723 fps | 99.3% |
| Somchem S365 | <<locked>> | 86% | 56,913 psi | 89% | 2730 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,520 psi | 85% | 2713 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,609 psi | 90% | 2717 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,682 psi | 90% | 2746 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 56,333 psi | 88% | 2759 fps | 96% |
| Vihtavuori N550 | <<locked>> | 84% | 56,913 psi | 89% | 2726 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,724 psi | 89% | 2759 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,246 psi | 88% | 2835 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 96% | 56,550 psi | 89% | 2825 fps | 99.5% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,290 psi | 90% | 2884 fps | 99% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,317 psi | 85% | 2881 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,087 psi | 89% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,651 psi | 87% | 2749 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 57,072 psi | 89% | 2867 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,201 psi | 85% | 2707 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 38,087 psi | 60% | 2418 fps | 99.3% |
| Accurate 4350 | <<locked>> | 80% | 50,589 psi | 79% | 2641 fps | 100% |
| Accurate MAGPRO | 71.1 gr | 80% | 39,015 psi | 61% | 2523 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 41,989 psi | 66% | 2536 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 80% | 37,536 psi | 59% | 2470 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 88% | 36,448 psi | 57% | 2451 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 84% | 28,979 psi | 45% | 2303 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,501 psi | 76% | 2648 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,076 psi | 66% | 2533 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,942 psi | 59% | 2484 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,695 psi | 57% | 2438 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,705 psi | 50% | 2365 fps | 98.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,683 psi | 64% | 2585 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 47,355 psi | 74% | 2743 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 47,747 psi | 75% | 2621 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 35,418 psi | 56% | 2421 fps | 96.4% |
| Bofors RP30 | <<locked>> | 86% | 35,795 psi | 56% | 2464 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 37,942 psi | 59% | 2484 fps | 97.4% |
| Bofors RP7 | <<locked>> | 80% | 52,547 psi | 82% | 2644 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 34,693 psi | 54% | 2411 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 51,924 psi | 81% | 2694 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,118 psi | 63% | 2480 fps | 96% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,334 psi | 62% | 2464 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,614 psi | 71% | 2533 fps | 100% |
| Hodgdon Retumbo | 67.3 gr | 80% | 31,053 psi | 49% | 2388 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 52,127 psi | 82% | 2726 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,007 psi | 44% | 1519 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,747 psi | 75% | 2582 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,766 psi | 84% | 2664 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 47,979 psi | 75% | 2592 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,524 psi | 65% | 2477 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 80% | 36,274 psi | 57% | 2454 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 94% | 36,376 psi | 57% | 2500 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 51,285 psi | 80% | 2612 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,850 psi | 78% | 2612 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,938 psi | 52% | 2303 fps | 98.1% |
| Norma 204 | <<locked>> | 80% | 48,211 psi | 76% | 2628 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 29,965 psi | 47% | 2356 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 39,914 psi | 63% | 2549 fps | 99% |
| Norma URP | <<locked>> | 80% | 49,342 psi | 77% | 2628 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 35,839 psi | 56% | 2457 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 48,167 psi | 75% | 2631 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,039 psi | 50% | 2349 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,805 psi | 45% | 1558 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,575 psi | 79% | 2667 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,849 psi | 77% | 2687 fps | 100% |
| ReloadSwiss RS 76 | 72 gr | 80% | 29,994 psi | 47% | 2362 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 38,711 psi | 61% | 2566 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 43,323 psi | 68% | 2516 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 80% | 41,553 psi | 65% | 2520 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 80% | 52,547 psi | 82% | 2644 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,285 psi | 80% | 2612 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,850 psi | 78% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,183 psi | 79% | 2566 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,220 psi | 65% | 2516 fps | 98.2% |
| Somchem S361 | <<locked>> | 80% | 44,019 psi | 69% | 2507 fps | 97.1% |
| Somchem S365 | <<locked>> | 80% | 46,572 psi | 73% | 2585 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,003 psi | 66% | 2500 fps | 99% |
| Vihtavuori N160 | <<locked>> | 80% | 50,705 psi | 79% | 2621 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,564 psi | 57% | 2385 fps | 97.5% |
| Vihtavuori N170 | <<locked>> | 96% | 52,779 psi | 83% | 2703 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 50,096 psi | 79% | 2625 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,104 psi | 64% | 2513 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 39,900 psi | 63% | 2539 fps | 96.1% |
| Vihtavuori N565 | <<locked>> | 84% | 37,797 psi | 59% | 2484 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 90% | 40,190 psi | 63% | 2579 fps | 95% |
| Vihtavuori N570 | <<locked>> | 96% | 47,123 psi | 74% | 2753 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,835 psi | 78% | 2579 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,127 psi | 82% | 2697 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,460 psi | 52% | 2477 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,450 psi | 60% | 2431 fps | 97.4% |
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 76 powders for .300 Norma Mag. loaded with the .308 | 212gr | Barnes LRX BT Bore Rider. Hodgdon Retumbo delivers the highest muzzle velocity at 2,927 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,927 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 212.0 gr projectile in 0.308" calls for a 1:8.5 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. Hodgdon Retumbo, ReloadSwiss RS 76, Accurate MAGPRO rank at the top here: for .300 Norma Mag. with the .308 | 212gr | Barnes LRX BT Bore Rider they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-50, 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.