Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 215gr | Berger Hybrid Target bullet and 73 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 55,361 psi | 87% | 2694 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,144 psi | 88% | 2710 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 56,884 psi | 89% | 2841 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 57,740 psi | 90% | 2848 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 88% | 56,797 psi | 89% | 2776 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 54,853 psi | 86% | 2785 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,695 psi | 89% | 2815 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 49,124 psi | 77% | 2785 fps | 96.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,097 psi | 80% | 2782 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,956 psi | 89% | 2769 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,956 psi | 89% | 2769 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 57,116 psi | 90% | 2759 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,304 psi | 88% | 2762 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 55,245 psi | 87% | 2782 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,913 psi | 89% | 2746 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 56,623 psi | 89% | 2815 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,421 psi | 90% | 2835 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,708 psi | 84% | 2841 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,782 psi | 87% | 2753 fps | 97.9% |
| Bofors RP15 | <<locked>> | 92% | 54,447 psi | 85% | 2769 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 56,173 psi | 88% | 2825 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 55,245 psi | 87% | 2782 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 57,508 psi | 90% | 2707 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 54,462 psi | 85% | 2782 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 57,406 psi | 90% | 2762 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 54,520 psi | 85% | 2726 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 57,087 psi | 89% | 2766 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 57,276 psi | 90% | 2684 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 55,317 psi | 87% | 2894 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,565 psi | 59% | 1706 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,898 psi | 88% | 2700 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 56,304 psi | 88% | 2700 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 55,114 psi | 86% | 2707 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 92% | 56,840 psi | 89% | 2825 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,775 psi | 73% | 2697 fps | 98.9% |
| Lovex S065 | <<locked>> | 82% | 56,347 psi | 88% | 2674 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 54,592 psi | 86% | 2674 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 56,652 psi | 89% | 2710 fps | 100% |
| Norma 204 | <<locked>> | 84% | 57,116 psi | 90% | 2756 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 47,268 psi | 74% | 2723 fps | 100% |
| Norma MRP | <<locked>> | 88% | 55,143 psi | 86% | 2799 fps | 100% |
| Norma URP | <<locked>> | 82% | 54,346 psi | 85% | 2690 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 53,795 psi | 84% | 2789 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 56,927 psi | 89% | 2753 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,333 psi | 88% | 2782 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,392 psi | 60% | 1742 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,275 psi | 88% | 2733 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 54,607 psi | 86% | 2759 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,115 psi | 88% | 2890 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 55,143 psi | 86% | 2851 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 88% | 57,696 psi | 90% | 2746 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 56,173 psi | 88% | 2756 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 57,508 psi | 90% | 2707 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,347 psi | 88% | 2674 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 54,592 psi | 86% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,100 psi | 86% | 2631 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,767 psi | 87% | 2753 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 55,303 psi | 87% | 2687 fps | 99.2% |
| Somchem S365 | <<locked>> | 84% | 55,390 psi | 87% | 2694 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,536 psi | 89% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 55,956 psi | 88% | 2684 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,246 psi | 88% | 2713 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 54,911 psi | 86% | 2730 fps | 96% |
| Vihtavuori N550 | <<locked>> | 82% | 55,071 psi | 86% | 2687 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 55,434 psi | 87% | 2726 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 54,752 psi | 86% | 2799 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 94% | 55,216 psi | 87% | 2789 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 98% | 55,999 psi | 88% | 2851 fps | 99% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 57,159 psi | 90% | 2913 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 55,100 psi | 86% | 2638 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,624 psi | 90% | 2766 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 55,782 psi | 87% | 2828 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,188 psi | 88% | 2726 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% | 39,697 psi | 62% | 2438 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 52,533 psi | 82% | 2657 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 43,236 psi | 68% | 2608 fps | 98% |
| Accurate MAGPRO | <<locked>> | 80% | 40,756 psi | 64% | 2546 fps | 96% |
| ADI AR 2209 | <<locked>> | 80% | 43,627 psi | 68% | 2556 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 80% | 38,986 psi | 61% | 2497 fps | 96.6% |
| ADI AR 2217 | <<locked>> | 86% | 35,447 psi | 56% | 2418 fps | 95.7% |
| ADI AR 2218 | <<locked>> | 98% | 45,759 psi | 72% | 2717 fps | 95% |
| ADI AR 2225 | <<locked>> | 82% | 28,340 psi | 44% | 2274 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,063 psi | 69% | 2556 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,063 psi | 69% | 2556 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,241 psi | 79% | 2661 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,656 psi | 68% | 2549 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,523 psi | 62% | 2503 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,377 psi | 60% | 2457 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,083 psi | 52% | 2388 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,699 psi | 67% | 2605 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 46,311 psi | 73% | 2713 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 46,238 psi | 72% | 2585 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 36,811 psi | 58% | 2444 fps | 97.1% |
| Bofors RP30 | <<locked>> | 84% | 35,070 psi | 55% | 2434 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 39,523 psi | 62% | 2503 fps | 98.1% |
| Bofors RP7 | <<locked>> | 80% | 53,998 psi | 85% | 2654 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 33,794 psi | 53% | 2379 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 53,882 psi | 84% | 2710 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 41,626 psi | 65% | 2500 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,814 psi | 64% | 2484 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,224 psi | 74% | 2543 fps | 100% |
| Hodgdon Retumbo | 69 gr | 80% | 32,387 psi | 51% | 2418 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,166 psi | 44% | 1522 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,356 psi | 77% | 2598 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 49,545 psi | 78% | 2602 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,960 psi | 67% | 2493 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 80% | 37,768 psi | 59% | 2477 fps | 96.3% |
| IMR 8133 Enduron | <<locked>> | 92% | 35,795 psi | 56% | 2474 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 52,939 psi | 83% | 2628 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,285 psi | 80% | 2625 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,301 psi | 54% | 2323 fps | 98.7% |
| Norma 204 | <<locked>> | 80% | 49,835 psi | 78% | 2644 fps | 99.5% |
| Norma 217 | <<locked>> | 86% | 29,385 psi | 46% | 2326 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 41,800 psi | 66% | 2572 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 50,952 psi | 80% | 2641 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,492 psi | 59% | 2487 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 80% | 49,835 psi | 78% | 2648 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,533 psi | 53% | 2372 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,964 psi | 45% | 1562 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,591 psi | 82% | 2680 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,908 psi | 80% | 2707 fps | 100% |
| ReloadSwiss RS 76 | 73.8 gr | 80% | 31,314 psi | 49% | 2392 fps | 97.1% |
| ReloadSwiss RS 80 | 81.8 gr | 88% | 37,869 psi | 59% | 2533 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 44,715 psi | 70% | 2533 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 80% | 43,207 psi | 68% | 2539 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 80% | 53,998 psi | 85% | 2654 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,939 psi | 83% | 2628 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,285 psi | 80% | 2625 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,706 psi | 81% | 2582 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,873 psi | 67% | 2536 fps | 98.8% |
| Somchem S361 | <<locked>> | 80% | 45,542 psi | 71% | 2526 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 48,530 psi | 76% | 2598 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,569 psi | 68% | 2520 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 52,489 psi | 82% | 2631 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,000 psi | 60% | 2405 fps | 98.1% |
| Vihtavuori N170 | <<locked>> | 94% | 51,358 psi | 80% | 2671 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 51,750 psi | 81% | 2638 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,728 psi | 67% | 2526 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,698 psi | 65% | 2566 fps | 97% |
| Vihtavuori N565 | <<locked>> | 82% | 36,840 psi | 58% | 2451 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 88% | 39,305 psi | 62% | 2549 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 94% | 46,108 psi | 72% | 2720 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,576 psi | 81% | 2589 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,882 psi | 84% | 2710 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,404 psi | 55% | 2500 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,900 psi | 63% | 2451 fps | 98.1% |
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 73 powders for .300 Norma Mag. loaded with the .308 | 215gr | Berger Hybrid Target. Vihtavuori N570 delivers the highest muzzle velocity at 2,913 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,913 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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 215.0 gr projectile in 0.308" calls for a 1:10.0 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 | 215gr | Berger Hybrid Target 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.