Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 165gr | CutEdge MTH bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Ramshot Grand, Accurate MAGPRO and Alliant Reloder-26.
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>> | 96% | 55,854 psi | 88% | 3054 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 57,363 psi | 90% | 3100 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,795 psi | 86% | 3146 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 82% | 55,158 psi | 86% | 3009 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,824 psi | 86% | 3097 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 96% | 56,347 psi | 88% | 3159 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,992 psi | 74% | 2972 fps | 96.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,539 psi | 65% | 2917 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,391 psi | 88% | 3035 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,679 psi | 86% | 3104 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,898 psi | 88% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,215 psi | 85% | 3081 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,072 psi | 88% | 3153 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 57,043 psi | 89% | 3123 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,620 psi | 82% | 3120 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,432 psi | 84% | 3150 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,984 psi | 86% | 3130 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 57,334 psi | 90% | 3048 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,515 psi | 76% | 3041 fps | 97.1% |
| Bofors RP5 | <<locked>> | 96% | 56,072 psi | 88% | 3153 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 56,492 psi | 89% | 3045 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,793 psi | 81% | 3071 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 82% | 57,508 psi | 90% | 3071 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,564 psi | 87% | 3097 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 54,752 psi | 86% | 3054 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 94% | 56,246 psi | 88% | 3094 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,984 psi | 86% | 3071 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,071 psi | 86% | 3025 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,576 psi | 81% | 3179 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 86% | 56,173 psi | 88% | 3136 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,738 psi | 58% | 1946 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,549 psi | 85% | 3028 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,549 psi | 85% | 3015 fps | 99.5% |
| IMR 4831 | <<locked>> | 88% | 54,143 psi | 85% | 3035 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,392 psi | 90% | 3081 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 96% | 53,911 psi | 84% | 3127 fps | 97.8% |
| Lovex S065 | <<locked>> | 86% | 54,882 psi | 86% | 3012 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,434 psi | 88% | 3058 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,098 psi | 83% | 3012 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 55,492 psi | 87% | 3084 fps | 98.7% |
| Norma MRP | <<locked>> | 94% | 55,825 psi | 87% | 3173 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 55,825 psi | 87% | 3081 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,491 psi | 85% | 3150 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 88% | 54,839 psi | 86% | 3084 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 57,014 psi | 89% | 3146 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,507 psi | 59% | 1988 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,334 psi | 90% | 3058 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,390 psi | 87% | 3107 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,580 psi | 90% | 3123 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,086 psi | 88% | 3153 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,286 psi | 82% | 3179 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 57,638 psi | 90% | 3051 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,970 psi | 88% | 3064 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 94% | 57,406 psi | 90% | 3130 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 56,492 psi | 89% | 3045 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,882 psi | 86% | 3012 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,434 psi | 88% | 3058 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,608 psi | 87% | 3054 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,070 psi | 85% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,288 psi | 85% | 2963 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,942 psi | 89% | 3127 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 57,159 psi | 90% | 3041 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,740 psi | 90% | 3054 fps | 97.7% |
| Somchem S365 | <<locked>> | 90% | 56,246 psi | 88% | 3084 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,725 psi | 90% | 3100 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 55,085 psi | 86% | 2963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,157 psi | 85% | 3022 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,377 psi | 90% | 3077 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 88% | 56,884 psi | 89% | 3077 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,550 psi | 87% | 3100 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,738 psi | 87% | 3166 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,317 psi | 87% | 3136 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,566 psi | 90% | 3031 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,753 psi | 87% | 3100 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,520 psi | 85% | 3202 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,230 psi | 85% | 3038 fps | 98.7% |
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% | 31,937 psi | 50% | 2562 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 43,395 psi | 68% | 2854 fps | 99.6% |
| Accurate MAGPRO | 88.3 gr | 92% | 50,778 psi | 80% | 3074 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 51,706 psi | 81% | 2953 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 41,742 psi | 65% | 2841 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 90% | 45,687 psi | 72% | 2953 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 98% | 43,845 psi | 69% | 2904 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 36,376 psi | 57% | 2782 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,837 psi | 83% | 2979 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,814 psi | 66% | 2864 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,356 psi | 76% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 41,626 psi | 65% | 2831 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,581 psi | 62% | 2822 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,806 psi | 48% | 2598 fps | 98.3% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,748 psi | 48% | 2615 fps | 95% |
| Alliant Reloder-26 | 77.7 gr | 80% | 33,562 psi | 53% | 2730 fps | 97.2% |
| Bofors RP15 | <<locked>> | 90% | 41,959 psi | 66% | 2877 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 53,664 psi | 84% | 2995 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 42,148 psi | 66% | 2907 fps | 95.2% |
| Bofors RP5 | <<locked>> | 86% | 39,581 psi | 62% | 2822 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 46,456 psi | 73% | 2867 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 41,872 psi | 66% | 2864 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 53,664 psi | 84% | 3012 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,368 psi | 71% | 2910 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 48,080 psi | 75% | 2933 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 48,907 psi | 77% | 2963 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 48,008 psi | 75% | 2943 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,262 psi | 62% | 2743 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 39,320 psi | 62% | 2897 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 44,730 psi | 70% | 2927 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 43% | 1742 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,119 psi | 66% | 2789 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,008 psi | 75% | 2897 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 41,379 psi | 65% | 2799 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 47,355 psi | 74% | 2897 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 90% | 43,845 psi | 69% | 2927 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 45,397 psi | 71% | 2841 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 43,700 psi | 68% | 2825 fps | 98.1% |
| Lovex S071 | <<locked>> | 86% | 33,489 psi | 52% | 2608 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 41,916 psi | 66% | 2822 fps | 95.7% |
| Norma MRP | <<locked>> | 82% | 36,056 psi | 56% | 2762 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 42,801 psi | 67% | 2844 fps | 99.5% |
| Ramshot Grand | 84.1 gr | 90% | 43,598 psi | 68% | 2933 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 41,669 psi | 65% | 2831 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 38,827 psi | 61% | 2799 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 44% | 1781 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,606 psi | 84% | 2995 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,387 psi | 81% | 3045 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,352 psi | 68% | 2874 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,843 psi | 66% | 2890 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 36,027 psi | 56% | 2802 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 50,444 psi | 79% | 2936 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 43,105 psi | 68% | 2818 fps | 95% |
| Rottweil R 905 | <<locked>> | 84% | 40,799 psi | 64% | 2815 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 46,456 psi | 73% | 2867 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,397 psi | 71% | 2841 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 43,700 psi | 68% | 2825 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,938 psi | 81% | 2995 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,807 psi | 80% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,367 psi | 70% | 2782 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 40,451 psi | 63% | 2808 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 50,357 psi | 79% | 2933 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 47,224 psi | 74% | 2871 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 39,624 psi | 62% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 38,624 psi | 61% | 2733 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 48,240 psi | 76% | 2854 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,295 psi | 69% | 2844 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 38,290 psi | 60% | 2717 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 43,540 psi | 68% | 2841 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 34,534 psi | 54% | 2680 fps | 98.3% |
| Vihtavuori N560 | <<locked>> | 88% | 45,136 psi | 71% | 2963 fps | 95% |
| Vihtavuori N565 | <<locked>> | 94% | 44,759 psi | 70% | 2933 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,482 psi | 68% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,368 psi | 71% | 2910 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,166 psi | 43% | 2582 fps | 97.8% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,814 psi | 64% | 2782 fps | 95.6% |
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 82 powders for .300 Norma Mag. loaded with the .308 | 165gr | CutEdge MTH. Winchester StaBALL HD delivers the highest muzzle velocity at 3,202 fps; across all powders the maximum-charge window runs from 1,946 fps to 3,202 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 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 165.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Ramshot Grand, Accurate MAGPRO, Alliant Reloder-26 rank at the top here: for .300 Norma Mag. with the .308 | 165gr | CutEdge MTH they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, IMR 8133 Enduron, Vihtavuori N170 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.