Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 230gr | CutEdge LZR MAX GEN2 bullet and 66 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 ReloadSwiss RS 80.
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>> | 90% | 55,506 psi | 87% | 2612 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,420 psi | 88% | 2625 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 54,549 psi | 85% | 2717 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 88% | 57,479 psi | 90% | 2697 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 55,535 psi | 87% | 2713 fps | 99.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 57,566 psi | 90% | 2743 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 49,763 psi | 78% | 2723 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,677 psi | 81% | 2703 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 54,244 psi | 85% | 2631 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,913 psi | 89% | 2687 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 55,753 psi | 87% | 2703 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 57,435 psi | 90% | 2664 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 57,334 psi | 90% | 2736 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 54,070 psi | 85% | 2700 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 54,476 psi | 85% | 2772 fps | 98.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 56,376 psi | 88% | 2680 fps | 98.5% |
| Bofors RP15 | <<locked>> | 92% | 54,955 psi | 86% | 2694 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 56,869 psi | 89% | 2749 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 55,753 psi | 87% | 2703 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 55,172 psi | 86% | 2707 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 54,969 psi | 86% | 2651 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 57,624 psi | 90% | 2687 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 54,360 psi | 85% | 2559 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 56,362 psi | 88% | 2818 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,579 psi | 59% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 56,478 psi | 89% | 2621 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 56,768 psi | 89% | 2618 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 55,622 psi | 87% | 2628 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 92% | 57,624 psi | 90% | 2749 fps | 100% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 47,253 psi | 74% | 2628 fps | 99.4% |
| Lovex S065 | <<locked>> | 82% | 56,594 psi | 89% | 2592 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 54,882 psi | 86% | 2595 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 57,072 psi | 89% | 2631 fps | 100% |
| Norma 204 | <<locked>> | 84% | 57,682 psi | 90% | 2677 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 47,834 psi | 75% | 2648 fps | 100% |
| Norma MRP | <<locked>> | 88% | 55,724 psi | 87% | 2720 fps | 100% |
| Norma URP | <<locked>> | 82% | 54,766 psi | 86% | 2608 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 54,650 psi | 86% | 2713 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 57,508 psi | 90% | 2674 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,913 psi | 89% | 2703 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,406 psi | 60% | 1683 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,681 psi | 89% | 2651 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 55,303 psi | 87% | 2680 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 57,000 psi | 89% | 2812 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 56,028 psi | 88% | 2779 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 86% | 54,578 psi | 86% | 2615 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 56,724 psi | 89% | 2680 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,594 psi | 89% | 2592 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 54,882 psi | 86% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,419 psi | 87% | 2552 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 56,318 psi | 88% | 2674 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 55,941 psi | 88% | 2615 fps | 99.6% |
| Somchem S365 | <<locked>> | 84% | 55,999 psi | 88% | 2612 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,826 psi | 89% | 2648 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 56,434 psi | 88% | 2602 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,739 psi | 89% | 2638 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 55,216 psi | 87% | 2657 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 82% | 55,564 psi | 87% | 2608 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 55,767 psi | 87% | 2641 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 55,361 psi | 87% | 2723 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 94% | 55,651 psi | 87% | 2713 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 98% | 56,724 psi | 89% | 2779 fps | 99.4% |
| Vihtavuori N570 | <<locked>> | 98% | 53,882 psi | 84% | 2779 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 55,695 psi | 87% | 2559 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 56,797 psi | 89% | 2749 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,739 psi | 89% | 2648 fps | 100% |
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% | 39,552 psi | 62% | 2362 fps | 99.8% |
| Accurate 4350 | <<locked>> | 80% | 52,678 psi | 83% | 2575 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 40,915 psi | 64% | 2477 fps | 96.8% |
| ADI AR 2209 | <<locked>> | 80% | 43,903 psi | 69% | 2484 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 39,204 psi | 61% | 2428 fps | 97.4% |
| ADI AR 2217 | <<locked>> | 84% | 33,272 psi | 52% | 2297 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 98% | 46,238 psi | 72% | 2657 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 26,426 psi | 41% | 2152 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,865 psi | 80% | 2582 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,918 psi | 69% | 2477 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,697 psi | 62% | 2434 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,624 psi | 61% | 2382 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,098 psi | 52% | 2320 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,975 psi | 67% | 2530 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 43,337 psi | 68% | 2582 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 43,787 psi | 69% | 2464 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 37,028 psi | 58% | 2375 fps | 97.8% |
| Bofors RP30 | <<locked>> | 82% | 32,837 psi | 51% | 2310 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 39,697 psi | 62% | 2434 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 80% | 31,618 psi | 50% | 2257 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 80% | 41,901 psi | 66% | 2431 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,046 psi | 64% | 2415 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,601 psi | 75% | 2467 fps | 100% |
| Hodgdon Retumbo | 67.5 gr | 80% | 32,401 psi | 51% | 2352 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,108 psi | 44% | 1467 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,647 psi | 78% | 2520 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 49,937 psi | 78% | 2523 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,120 psi | 68% | 2425 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 80% | 37,942 psi | 59% | 2411 fps | 97.1% |
| IMR 8133 Enduron | <<locked>> | 90% | 33,562 psi | 53% | 2349 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 53,287 psi | 84% | 2546 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,648 psi | 81% | 2549 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,069 psi | 53% | 2251 fps | 99.1% |
| Norma 204 | <<locked>> | 80% | 50,328 psi | 79% | 2569 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 27,340 psi | 43% | 2205 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 41,959 psi | 66% | 2497 fps | 99.7% |
| Norma URP | <<locked>> | 80% | 51,416 psi | 81% | 2562 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,637 psi | 59% | 2418 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 80% | 50,256 psi | 79% | 2572 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,533 psi | 53% | 2306 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,906 psi | 45% | 1503 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,837 psi | 83% | 2598 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,445 psi | 81% | 2625 fps | 100% |
| ReloadSwiss RS 76 | 72.2 gr | 80% | 31,285 psi | 49% | 2326 fps | 97.9% |
| ReloadSwiss RS 80 | 78.3 gr | 86% | 35,418 psi | 56% | 2405 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 45,078 psi | 71% | 2464 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 80% | 43,395 psi | 68% | 2467 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,287 psi | 84% | 2546 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,648 psi | 81% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,098 psi | 82% | 2507 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,062 psi | 67% | 2464 fps | 99.2% |
| Somchem S361 | <<locked>> | 80% | 45,716 psi | 72% | 2454 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 48,805 psi | 76% | 2516 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,671 psi | 68% | 2444 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 52,823 psi | 83% | 2552 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,087 psi | 60% | 2336 fps | 98.7% |
| Vihtavuori N170 | <<locked>> | 92% | 48,225 psi | 76% | 2543 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 52,083 psi | 82% | 2559 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,888 psi | 67% | 2448 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,887 psi | 66% | 2493 fps | 97.7% |
| Vihtavuori N565 | <<locked>> | 80% | 34,345 psi | 54% | 2323 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 86% | 36,912 psi | 58% | 2425 fps | 95% |
| Vihtavuori N570 | <<locked>> | 92% | 43,294 psi | 68% | 2592 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,996 psi | 81% | 2513 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,824 psi | 56% | 2428 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,118 psi | 63% | 2382 fps | 98.6% |
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 66 powders for .300 Norma Mag. loaded with the .308 | 230gr | CutEdge LZR MAX GEN2. Hodgdon Retumbo delivers the highest muzzle velocity at 2,818 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,818 fps. ADI AR 2217 gives the best case fill at 100 %, and 66 of the 66 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 230.0 gr projectile in 0.308" calls for a 1:8.0 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. Hodgdon Retumbo, ReloadSwiss RS 76, ReloadSwiss RS 80 rank at the top here: for .300 Norma Mag. with the .308 | 230gr | CutEdge LZR MAX GEN2 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.