Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 200gr | CutEdge LZR 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 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 54,911 psi | 86% | 2789 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,202 psi | 88% | 2815 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 53,809 psi | 84% | 2884 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 90% | 57,305 psi | 90% | 2884 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 55,071 psi | 86% | 2887 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,084 psi | 83% | 2854 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,427 psi | 74% | 2815 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,566 psi | 90% | 2871 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,710 psi | 89% | 2867 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,201 psi | 87% | 2884 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,637 psi | 89% | 2848 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,246 psi | 88% | 2917 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,319 psi | 90% | 2940 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,347 psi | 88% | 2851 fps | 97.4% |
| Bofors RP15 | <<locked>> | 94% | 54,404 psi | 85% | 2871 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 2920 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 55,201 psi | 87% | 2884 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 54,520 psi | 85% | 2762 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 54,607 psi | 86% | 2881 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 82% | 54,186 psi | 85% | 2818 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,652 psi | 89% | 2831 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 54,897 psi | 86% | 2828 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,479 psi | 90% | 2867 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,435 psi | 90% | 2792 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,056 psi | 86% | 2992 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,592 psi | 86% | 2851 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1765 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,434 psi | 88% | 2805 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,086 psi | 88% | 2789 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 56,478 psi | 89% | 2805 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,724 psi | 87% | 2808 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 56,913 psi | 89% | 2927 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,786 psi | 67% | 2717 fps | 97.5% |
| Lovex S065 | <<locked>> | 84% | 56,724 psi | 89% | 2782 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,013 psi | 86% | 2782 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 56,202 psi | 88% | 2805 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,479 psi | 90% | 2861 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 43,163 psi | 68% | 2743 fps | 99.3% |
| Norma MRP | <<locked>> | 90% | 55,129 psi | 86% | 2900 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,665 psi | 86% | 2799 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,766 psi | 84% | 2887 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 57,087 psi | 89% | 2858 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,304 psi | 88% | 2881 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,072 psi | 60% | 1811 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,405 psi | 88% | 2841 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,766 psi | 86% | 2864 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 55,941 psi | 88% | 2989 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,897 psi | 86% | 2943 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 88% | 54,607 psi | 86% | 2795 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 56,231 psi | 88% | 2858 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 54,520 psi | 85% | 2762 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,724 psi | 89% | 2782 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,013 psi | 86% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,738 psi | 87% | 2740 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,854 psi | 88% | 2854 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 55,811 psi | 87% | 2789 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 55,361 psi | 87% | 2802 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,478 psi | 89% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 56,666 psi | 89% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,376 psi | 88% | 2792 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,376 psi | 88% | 2815 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 55,535 psi | 87% | 2795 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,085 psi | 86% | 2825 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,868 psi | 86% | 2900 fps | 99% |
| Vihtavuori N565 | <<locked>> | 96% | 54,868 psi | 86% | 2884 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 55,825 psi | 87% | 2946 fps | 98.5% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,663 psi | 83% | 2936 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,724 psi | 87% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,389 psi | 85% | 2822 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,056 psi | 86% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,695 psi | 89% | 2831 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% | 36,448 psi | 57% | 2461 fps | 98.6% |
| Accurate 4350 | <<locked>> | 80% | 48,921 psi | 77% | 2707 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 40,379 psi | 63% | 2628 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 40,799 psi | 64% | 2592 fps | 97.6% |
| ADI AR 2213 | <<locked>> | 82% | 38,943 psi | 61% | 2582 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 90% | 37,565 psi | 59% | 2552 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 86% | 29,602 psi | 46% | 2388 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,166 psi | 74% | 2713 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,857 psi | 64% | 2585 fps | 97.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,521 psi | 57% | 2526 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,346 psi | 55% | 2487 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,458 psi | 48% | 2405 fps | 97.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,044 psi | 61% | 2631 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,702 psi | 73% | 2680 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 33,968 psi | 53% | 2464 fps | 95.2% |
| Bofors RP30 | <<locked>> | 88% | 36,738 psi | 58% | 2562 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 36,521 psi | 57% | 2526 fps | 96.4% |
| Bofors RP7 | <<locked>> | 80% | 51,169 psi | 80% | 2710 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 35,824 psi | 56% | 2510 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 50,618 psi | 79% | 2759 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 52,997 psi | 83% | 2772 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 38,827 psi | 61% | 2530 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,872 psi | 64% | 2575 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,222 psi | 69% | 2595 fps | 100% |
| Hodgdon Retumbo | 73.6 gr | 84% | 34,113 psi | 53% | 2549 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 50,734 psi | 80% | 2792 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,920 psi | 44% | 1578 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,601 psi | 73% | 2648 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,518 psi | 82% | 2730 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 46,354 psi | 73% | 2651 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,437 psi | 63% | 2533 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 82% | 37,449 psi | 59% | 2559 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,318 psi | 58% | 2595 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 50,082 psi | 78% | 2680 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,341 psi | 76% | 2674 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 31,270 psi | 49% | 2339 fps | 97.1% |
| Norma 204 | <<locked>> | 80% | 46,992 psi | 74% | 2690 fps | 98.7% |
| Norma 217 | <<locked>> | 92% | 32,576 psi | 51% | 2500 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 38,450 psi | 60% | 2595 fps | 98.3% |
| Norma URP | <<locked>> | 80% | 47,834 psi | 75% | 2694 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,130 psi | 58% | 2566 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 46,862 psi | 73% | 2697 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 33,025 psi | 52% | 2444 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,485 psi | 45% | 1617 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,994 psi | 77% | 2730 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,340 psi | 74% | 2749 fps | 100% |
| ReloadSwiss RS 76 | 76.9 gr | 82% | 30,835 psi | 48% | 2454 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 40,161 psi | 63% | 2671 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 42,047 psi | 66% | 2569 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 80% | 40,219 psi | 63% | 2575 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 80% | 51,169 psi | 80% | 2710 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,082 psi | 78% | 2680 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,341 psi | 76% | 2674 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,878 psi | 77% | 2631 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,885 psi | 63% | 2569 fps | 97.5% |
| Somchem S361 | <<locked>> | 80% | 42,670 psi | 67% | 2559 fps | 96.3% |
| Somchem S365 | <<locked>> | 80% | 45,092 psi | 71% | 2648 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,538 psi | 64% | 2552 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 80% | 53,156 psi | 83% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,400 psi | 77% | 2687 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,244 psi | 55% | 2431 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 80% | 48,631 psi | 76% | 2690 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,407 psi | 62% | 2559 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,537 psi | 60% | 2585 fps | 95% |
| Vihtavuori N565 | <<locked>> | 86% | 38,754 psi | 61% | 2582 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 92% | 41,771 psi | 65% | 2690 fps | 95% |
| Vihtavuori N570 | <<locked>> | 98% | 48,994 psi | 77% | 2871 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,573 psi | 76% | 2644 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,821 psi | 80% | 2762 fps | 99.9% |
| Winchester StaBALL HD | 72 gr | 80% | 31,821 psi | 50% | 2516 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,217 psi | 58% | 2484 fps | 96.6% |
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 71 powders for .300 Norma Mag. loaded with the .308 | 200gr | CutEdge LZR. Hodgdon Retumbo delivers the highest muzzle velocity at 2,992 fps; across all powders the maximum-charge window runs from 1,765 fps to 2,992 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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, Winchester StaBALL HD rank at the top here: for .300 Norma Mag. with the .308 | 200gr | CutEdge LZR 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.