Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 196gr | Peregrine Glider (Glider GRM) 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 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% | 53,838 psi | 84% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,129 psi | 86% | 2828 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 55,724 psi | 87% | 2953 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 92% | 56,710 psi | 89% | 2956 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 90% | 56,275 psi | 88% | 2890 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 53,998 psi | 85% | 2897 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,808 psi | 81% | 2858 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,224 psi | 72% | 2815 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 56,391 psi | 88% | 2887 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,478 psi | 89% | 2884 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,421 psi | 90% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,724 psi | 87% | 2881 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,099 psi | 85% | 2890 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,506 psi | 87% | 2861 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 55,042 psi | 86% | 2927 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,796 psi | 87% | 2946 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,506 psi | 87% | 2861 fps | 96.9% |
| Bofors RP15 | <<locked>> | 96% | 56,898 psi | 89% | 2933 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,621 psi | 86% | 2930 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 54,099 psi | 85% | 2890 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 57,145 psi | 90% | 2828 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,348 psi | 90% | 2946 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 56,942 psi | 89% | 2884 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,709 psi | 87% | 2841 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 57,566 psi | 90% | 2894 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,449 psi | 88% | 2877 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,391 psi | 88% | 2805 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,609 psi | 90% | 3058 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,595 psi | 90% | 2923 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,231 psi | 58% | 1785 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,521 psi | 87% | 2818 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,245 psi | 87% | 2799 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,463 psi | 87% | 2818 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,839 psi | 86% | 2818 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 94% | 55,709 psi | 87% | 2933 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,785 psi | 65% | 2717 fps | 96.9% |
| Lovex S065 | <<locked>> | 84% | 55,825 psi | 87% | 2795 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,595 psi | 90% | 2844 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,129 psi | 86% | 2815 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,492 psi | 89% | 2874 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 41,887 psi | 66% | 2740 fps | 98.9% |
| Norma MRP | <<locked>> | 90% | 53,954 psi | 85% | 2910 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,276 psi | 90% | 2864 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,652 psi | 89% | 2959 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 56,086 psi | 88% | 2871 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,853 psi | 86% | 2887 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,956 psi | 59% | 1824 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,317 psi | 87% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 53,650 psi | 84% | 2877 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,418 psi | 85% | 2992 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,359 psi | 84% | 2946 fps | 98.4% |
| Rottweil R 904 | <<locked>> | 90% | 57,232 psi | 90% | 2861 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 90% | 55,187 psi | 86% | 2867 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 57,145 psi | 90% | 2828 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,825 psi | 87% | 2795 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,595 psi | 90% | 2844 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,853 psi | 86% | 2749 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,766 psi | 86% | 2864 fps | 99.7% |
| Somchem S361 | <<locked>> | 88% | 54,897 psi | 86% | 2795 fps | 98.6% |
| Somchem S365 | <<locked>> | 86% | 54,259 psi | 85% | 2812 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,477 psi | 87% | 2838 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 55,970 psi | 88% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,405 psi | 87% | 2802 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,347 psi | 87% | 2825 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 54,549 psi | 85% | 2808 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,624 psi | 90% | 2887 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,624 psi | 90% | 2969 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 98% | 57,348 psi | 90% | 2946 fps | 99.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 2949 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,766 psi | 86% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,942 psi | 89% | 2884 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 53,606 psi | 84% | 2940 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,405 psi | 87% | 2835 fps | 99.7% |
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% | 35,650 psi | 56% | 2467 fps | 98.2% |
| Accurate 4350 | <<locked>> | 80% | 47,935 psi | 75% | 2717 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 38,986 psi | 61% | 2631 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 84% | 42,554 psi | 67% | 2700 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 39,987 psi | 63% | 2595 fps | 97.1% |
| ADI AR 2213 | <<locked>> | 82% | 38,174 psi | 60% | 2585 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 92% | 39,363 psi | 62% | 2612 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 88% | 31,038 psi | 49% | 2451 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,422 psi | 63% | 2598 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,209 psi | 72% | 2723 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,534 psi | 84% | 2838 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,059 psi | 63% | 2592 fps | 97.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,708 psi | 56% | 2530 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,505 psi | 54% | 2493 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,791 psi | 47% | 2405 fps | 96.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,043 psi | 60% | 2638 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,921 psi | 77% | 2743 fps | 95.3% |
| Bofors RP15 | <<locked>> | 82% | 35,694 psi | 56% | 2526 fps | 95.6% |
| Bofors RP30 | <<locked>> | 88% | 35,853 psi | 56% | 2562 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 35,708 psi | 56% | 2530 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 50,343 psi | 79% | 2720 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 37,666 psi | 59% | 2575 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 49,690 psi | 78% | 2769 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 52,127 psi | 82% | 2782 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 40,872 psi | 64% | 2595 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,074 psi | 63% | 2579 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,352 psi | 68% | 2605 fps | 100% |
| Hodgdon Retumbo | 73.4 gr | 84% | 33,373 psi | 52% | 2549 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 49,545 psi | 78% | 2795 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 44% | 1591 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,803 psi | 72% | 2654 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,924 psi | 81% | 2746 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 45,469 psi | 71% | 2661 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,726 psi | 62% | 2539 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 84% | 39,392 psi | 62% | 2625 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 39,001 psi | 61% | 2657 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 49,255 psi | 77% | 2690 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,514 psi | 74% | 2684 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 30,560 psi | 48% | 2339 fps | 96.5% |
| Norma 204 | <<locked>> | 80% | 46,122 psi | 72% | 2697 fps | 98.4% |
| Norma 217 | <<locked>> | 92% | 31,763 psi | 50% | 2497 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 37,565 psi | 59% | 2598 fps | 97.8% |
| Norma URP | <<locked>> | 80% | 46,949 psi | 74% | 2700 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 39,073 psi | 61% | 2631 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 45,963 psi | 72% | 2703 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 32,285 psi | 51% | 2444 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,514 psi | 45% | 1631 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,022 psi | 75% | 2736 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,325 psi | 73% | 2759 fps | 100% |
| ReloadSwiss RS 76 | 78.5 gr | 84% | 32,329 psi | 51% | 2520 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,293 psi | 66% | 2740 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 41,278 psi | 65% | 2579 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 80% | 39,407 psi | 62% | 2579 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 80% | 50,343 psi | 79% | 2720 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,255 psi | 77% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,514 psi | 74% | 2684 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,066 psi | 75% | 2641 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,088 psi | 61% | 2572 fps | 97% |
| Somchem S361 | <<locked>> | 80% | 41,930 psi | 66% | 2566 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 44,121 psi | 69% | 2657 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,726 psi | 62% | 2559 fps | 98% |
| Vihtavuori N150 | <<locked>> | 80% | 52,301 psi | 82% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,501 psi | 76% | 2697 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,505 psi | 54% | 2434 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 47,747 psi | 75% | 2700 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,522 psi | 60% | 2566 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 40,480 psi | 63% | 2654 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 88% | 40,625 psi | 64% | 2644 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 94% | 43,627 psi | 68% | 2753 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,703 psi | 75% | 2657 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,879 psi | 78% | 2772 fps | 99.8% |
| Winchester StaBALL HD | 71.8 gr | 80% | 30,806 psi | 48% | 2516 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,463 psi | 57% | 2487 fps | 96% |
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 | 196gr | Peregrine Glider (Glider GRM). Hodgdon Retumbo delivers the highest muzzle velocity at 3,058 fps; across all powders the maximum-charge window runs from 1,785 fps to 3,058 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 58–90 %, leaving at least 10 % headroom. The 196.0 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 | 196gr | Peregrine Glider (Glider GRM) 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.