Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 185gr | Berger VLD Hunting bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Ramshot Grand and Norma MRP.
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.
A valid access license is required to use the Personalized Load Calculator.
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 2700 | <<locked>> | 86% | 55,042 psi | 88% | 2733 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,492 psi | 89% | 2822 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 53,388 psi | 86% | 2710 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,954 psi | 87% | 2815 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 53,214 psi | 85% | 2740 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,723 psi | 88% | 2858 fps | 98.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,173 psi | 90% | 2913 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,130 psi | 90% | 2910 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,056 psi | 87% | 2762 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,346 psi | 87% | 2785 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,665 psi | 88% | 2871 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,086 psi | 90% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,157 psi | 87% | 2848 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,216 psi | 89% | 2910 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,083 psi | 84% | 2835 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,281 psi | 73% | 2769 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,927 psi | 90% | 2976 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,488 psi | 81% | 2828 fps | 97.8% |
| Bofors RP3 | <<locked>> | 84% | 54,998 psi | 88% | 2779 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,216 psi | 89% | 2910 fps | 98.7% |
| Bofors RP7 | <<locked>> | 88% | 54,259 psi | 87% | 2766 fps | 99% |
| Hodgdon H380 | <<locked>> | 84% | 55,201 psi | 89% | 2795 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 53,650 psi | 86% | 2831 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 90% | 54,143 psi | 87% | 2802 fps | 98.6% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 51,822 psi | 83% | 2785 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,071 psi | 88% | 2835 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,100 psi | 88% | 2795 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,113 psi | 85% | 2779 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,396 psi | 71% | 2802 fps | 97.2% |
| Hodgdon Superformance | <<locked>> | 90% | 56,246 psi | 90% | 2904 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,477 psi | 58% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,130 psi | 90% | 2779 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,666 psi | 89% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,550 psi | 89% | 2762 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,317 psi | 87% | 2743 fps | 99.3% |
| IMR 4350 | <<locked>> | 92% | 55,245 psi | 89% | 2802 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,782 psi | 89% | 2792 fps | 99.4% |
| IMR 4831 | <<locked>> | 96% | 55,347 psi | 89% | 2822 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,767 psi | 89% | 2812 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,201 psi | 87% | 2789 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 98% | 53,969 psi | 87% | 2890 fps | 97.3% |
| Lovex S062 | <<locked>> | 82% | 53,113 psi | 85% | 2717 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,999 psi | 90% | 2789 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 53,911 psi | 86% | 2779 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,180 psi | 74% | 2677 fps | 99% |
| Norma 203B | <<locked>> | 82% | 53,650 psi | 86% | 2769 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,999 psi | 90% | 2854 fps | 98.5% |
| Norma MRP | <<locked>> | 98% | 54,708 psi | 88% | 2933 fps | 99.5% |
| Norma URP | <<locked>> | 92% | 56,144 psi | 90% | 2851 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,215 psi | 87% | 2795 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,708 psi | 86% | 2897 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 92% | 54,955 psi | 88% | 2854 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,201 psi | 87% | 2874 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,246 psi | 60% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,013 psi | 88% | 2779 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,550 psi | 89% | 2884 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,780 psi | 86% | 2838 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,043 psi | 90% | 2923 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,324 psi | 71% | 2799 fps | 98.2% |
| Rottweil R 902 | <<locked>> | 82% | 54,810 psi | 88% | 2726 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,100 psi | 88% | 2776 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,391 psi | 90% | 2828 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 96% | 53,461 psi | 86% | 2835 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 54,259 psi | 87% | 2766 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,999 psi | 90% | 2789 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 53,113 psi | 85% | 2717 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,911 psi | 86% | 2779 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,069 psi | 85% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,927 psi | 90% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,753 psi | 89% | 2746 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 52,997 psi | 85% | 2828 fps | 98.3% |
| Somchem S355 | <<locked>> | 86% | 54,955 psi | 88% | 2772 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,665 psi | 88% | 2769 fps | 96.6% |
| Somchem S365 | <<locked>> | 94% | 55,622 psi | 89% | 2854 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,186 psi | 87% | 2812 fps | 99% |
| Unknown powder | <<locked>> | 88% | 53,287 psi | 85% | 2805 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 55,419 psi | 89% | 2687 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,405 psi | 89% | 2700 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,217 psi | 90% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,708 psi | 88% | 2795 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,388 psi | 86% | 2785 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 53,519 psi | 86% | 2697 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,809 psi | 86% | 2802 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,737 psi | 88% | 2861 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,940 psi | 88% | 2920 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,143 psi | 87% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,650 psi | 86% | 2831 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,123 psi | 76% | 2897 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,072 psi | 90% | 2831 fps | 98.6% |
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 2700 | <<locked>> | 80% | 45,281 psi | 73% | 2572 fps | 97.4% |
| Accurate 3100 | <<locked>> | 84% | 32,314 psi | 52% | 2392 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 50,183 psi | 80% | 2664 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,334 psi | 61% | 2539 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 47,050 psi | 75% | 2638 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 42,221 psi | 68% | 2631 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 94% | 45,919 psi | 74% | 2730 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,359 psi | 84% | 2854 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,747 psi | 77% | 2664 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,879 psi | 82% | 2730 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,231 psi | 60% | 2549 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,221 psi | 68% | 2671 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 42,018 psi | 67% | 2628 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,494 psi | 63% | 2618 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,412 psi | 44% | 2313 fps | 96.8% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,083 psi | 53% | 2487 fps | 96.1% |
| Alliant Reloder-26 | 61.8 gr | 80% | 29,138 psi | 47% | 2415 fps | 95% |
| Bofors RP15 | <<locked>> | 94% | 41,713 psi | 67% | 2664 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 48,037 psi | 77% | 2674 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,494 psi | 63% | 2618 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,366 psi | 68% | 2556 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 80% | 48,486 psi | 78% | 2690 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 43,627 psi | 70% | 2654 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 39,740 psi | 64% | 2533 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 98% | 48,588 psi | 78% | 2730 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 48,153 psi | 77% | 2723 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,751 psi | 56% | 2444 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,908 psi | 80% | 2730 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,001 psi | 63% | 2674 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 39,175 psi | 63% | 2595 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,340 psi | 44% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,617 psi | 80% | 2680 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,402 psi | 84% | 2703 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,253 psi | 74% | 2618 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,440 psi | 73% | 2592 fps | 98.1% |
| IMR 4350 | <<locked>> | 80% | 37,884 psi | 61% | 2480 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,584 psi | 70% | 2582 fps | 97.6% |
| IMR 4831 | <<locked>> | 80% | 33,489 psi | 54% | 2415 fps | 97.5% |
| IMR 4895 | <<locked>> | 80% | 52,185 psi | 84% | 2756 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,964 psi | 77% | 2680 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 47,007 psi | 75% | 2766 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 49,922 psi | 80% | 2671 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,263 psi | 66% | 2536 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 39,465 psi | 63% | 2516 fps | 96.8% |
| Lovex S071 | <<locked>> | 90% | 33,533 psi | 54% | 2421 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 50,241 psi | 81% | 2717 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,801 psi | 69% | 2621 fps | 95.7% |
| Norma MRP | 64.5 gr | 86% | 36,143 psi | 58% | 2572 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,101 psi | 61% | 2536 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 50,749 psi | 81% | 2743 fps | 100% |
| Ramshot Grand | 71.2 gr | 92% | 46,325 psi | 74% | 2766 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 36,898 psi | 59% | 2523 fps | 96.8% |
| Ramshot Magnum | <<locked>> | 92% | 40,001 psi | 64% | 2618 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,905 psi | 45% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,298 psi | 77% | 2671 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,860 psi | 72% | 2720 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,145 psi | 61% | 2559 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,927 psi | 59% | 2566 fps | 97.9% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,537 psi | 62% | 2661 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 51,735 psi | 83% | 2680 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,353 psi | 73% | 2625 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,731 psi | 75% | 2667 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 88% | 41,046 psi | 66% | 2612 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 42,366 psi | 68% | 2556 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,263 psi | 66% | 2536 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 49,922 psi | 80% | 2671 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,465 psi | 63% | 2516 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,441 psi | 74% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,470 psi | 75% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,248 psi | 65% | 2477 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,669 psi | 65% | 2605 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 45,629 psi | 73% | 2625 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 47,819 psi | 77% | 2657 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 34,563 psi | 55% | 2493 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,680 psi | 59% | 2487 fps | 95% |
| Unknown powder | <<locked>> | 80% | 40,959 psi | 66% | 2585 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 80% | 51,982 psi | 83% | 2641 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,098 psi | 84% | 2654 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,511 psi | 70% | 2552 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,450 psi | 63% | 2533 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 38,377 psi | 62% | 2516 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 50,372 psi | 81% | 2651 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,957 psi | 62% | 2536 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 30,284 psi | 49% | 2388 fps | 96.9% |
| Vihtavuori N560 | <<locked>> | 94% | 47,979 psi | 77% | 2799 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,537 psi | 62% | 2503 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 43,627 psi | 70% | 2654 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,192 psi | 39% | 2280 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 88% | 42,032 psi | 67% | 2595 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 97 powders for .300 Win. Mag. loaded with the .308 | 185gr | Berger VLD Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 2,976 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,976 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. Alliant Reloder-26, Ramshot Grand, Norma MRP rank at the top here: for .300 Win. Mag. with the .308 | 185gr | Berger VLD Hunting they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 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.