Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 215gr | Berger Hybrid Target bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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>> | 96% | 54,665 psi | 88% | 2618 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 52,750 psi | 85% | 2598 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 56,057 psi | 90% | 2759 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 53,098 psi | 85% | 2707 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 54,621 psi | 88% | 2562 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,476 psi | 86% | 2648 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 54,853 psi | 88% | 2707 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,774 psi | 73% | 2552 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,495 psi | 65% | 2516 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 53,824 psi | 86% | 2648 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,898 psi | 90% | 2582 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,650 psi | 86% | 2648 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,650 psi | 88% | 2664 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,156 psi | 85% | 2641 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,563 psi | 87% | 2703 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,390 psi | 89% | 2671 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,198 psi | 82% | 2680 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,695 psi | 89% | 2759 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,447 psi | 86% | 2618 fps | 95.8% |
| Bofors RP15 | <<locked>> | 98% | 53,490 psi | 86% | 2687 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,152 psi | 76% | 2621 fps | 98.1% |
| Bofors RP5 | <<locked>> | 96% | 54,563 psi | 87% | 2703 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 55,724 psi | 89% | 2598 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,256 psi | 81% | 2635 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 86% | 54,607 psi | 88% | 2648 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 54,099 psi | 87% | 2612 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 54,926 psi | 88% | 2651 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,664 psi | 86% | 2631 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,056 psi | 87% | 2579 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,980 psi | 80% | 2736 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 54,868 psi | 88% | 2687 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,883 psi | 59% | 1608 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,635 psi | 86% | 2585 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,853 psi | 86% | 2572 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 53,403 psi | 86% | 2595 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,043 psi | 90% | 2631 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 98% | 56,043 psi | 90% | 2736 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 54,317 psi | 87% | 2569 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,854 psi | 90% | 2618 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,170 psi | 84% | 2582 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,389 psi | 87% | 2638 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 36,158 psi | 58% | 2448 fps | 97.1% |
| Norma MRP | <<locked>> | 94% | 54,201 psi | 87% | 2723 fps | 100% |
| Norma URP | <<locked>> | 88% | 55,042 psi | 88% | 2631 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 52,982 psi | 85% | 2703 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 53,751 psi | 86% | 2641 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,911 psi | 88% | 2697 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,753 psi | 61% | 1647 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,360 psi | 87% | 2651 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,304 psi | 90% | 2671 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,520 psi | 87% | 2697 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,183 psi | 80% | 2733 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 45,295 psi | 73% | 2621 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 82% | 53,563 psi | 86% | 2552 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,071 psi | 88% | 2621 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 94% | 56,043 psi | 90% | 2680 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 86% | 55,724 psi | 89% | 2598 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,317 psi | 87% | 2569 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,854 psi | 90% | 2618 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,839 psi | 88% | 2605 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,882 psi | 86% | 2434 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,621 psi | 86% | 2530 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,579 psi | 89% | 2674 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 53,432 psi | 86% | 2546 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,434 psi | 90% | 2615 fps | 98.4% |
| Somchem S365 | <<locked>> | 90% | 54,984 psi | 88% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,055 psi | 85% | 2605 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 54,476 psi | 87% | 2523 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,258 psi | 85% | 2575 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,854 psi | 90% | 2635 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 55,941 psi | 90% | 2631 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,389 psi | 87% | 2651 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,157 psi | 87% | 2717 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,592 psi | 86% | 2697 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,318 psi | 90% | 2589 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,810 psi | 88% | 2651 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,260 psi | 90% | 2802 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,750 psi | 85% | 2598 fps | 99.2% |
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% | 32,068 psi | 51% | 2218 fps | 97% |
| Accurate 4350 | <<locked>> | 80% | 43,178 psi | 69% | 2448 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 39,653 psi | 64% | 2474 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 88% | 43,047 psi | 69% | 2533 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 51,314 psi | 82% | 2513 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,216 psi | 58% | 2333 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 86% | 39,276 psi | 63% | 2428 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 96% | 40,161 psi | 64% | 2444 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 92% | 31,473 psi | 50% | 2297 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,448 psi | 58% | 2336 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,518 psi | 84% | 2536 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,452 psi | 66% | 2454 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,659 psi | 76% | 2566 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,129 psi | 58% | 2329 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,142 psi | 55% | 2326 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,864 psi | 49% | 2247 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,006 psi | 43% | 2159 fps | 95.1% |
| Alliant Reloder-26 | 60.8 gr | 80% | 33,199 psi | 53% | 2365 fps | 98.7% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,285 psi | 81% | 2562 fps | 95% |
| Bofors RP15 | <<locked>> | 86% | 36,303 psi | 58% | 2375 fps | 95.7% |
| Bofors RP30 | <<locked>> | 94% | 38,508 psi | 62% | 2457 fps | 95.8% |
| Bofors RP5 | <<locked>> | 82% | 34,142 psi | 55% | 2326 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 46,441 psi | 74% | 2454 fps | 99% |
| Hodgdon H1000 | <<locked>> | 92% | 38,479 psi | 62% | 2411 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 44,918 psi | 72% | 2493 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 80% | 47,529 psi | 76% | 2507 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 86% | 41,959 psi | 67% | 2434 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,191 psi | 66% | 2421 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,233 psi | 63% | 2352 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 33,997 psi | 55% | 2392 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 44,077 psi | 71% | 2516 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,731 psi | 44% | 1437 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,843 psi | 67% | 2392 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,630 psi | 76% | 2474 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 41,162 psi | 66% | 2402 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,147 psi | 66% | 2382 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 88% | 40,219 psi | 64% | 2461 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 45,324 psi | 73% | 2431 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 43,584 psi | 70% | 2421 fps | 99.1% |
| Lovex S071 | <<locked>> | 80% | 27,673 psi | 44% | 2110 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 41,466 psi | 66% | 2421 fps | 97.1% |
| Norma 217 | <<locked>> | 96% | 31,778 psi | 51% | 2339 fps | 95.2% |
| Norma MRP | 59.1 gr | 80% | 33,388 psi | 54% | 2336 fps | 96.3% |
| Norma URP | <<locked>> | 80% | 42,583 psi | 68% | 2441 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 39,827 psi | 64% | 2467 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 41,220 psi | 66% | 2434 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 33,054 psi | 53% | 2300 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,210 psi | 45% | 1470 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,575 psi | 81% | 2602 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,946 psi | 69% | 2467 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,292 psi | 66% | 2484 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,025 psi | 53% | 2369 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 42,018 psi | 67% | 2559 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 50,227 psi | 81% | 2507 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,103 psi | 64% | 2369 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 80% | 35,433 psi | 57% | 2316 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 46,441 psi | 74% | 2454 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,324 psi | 73% | 2431 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 43,584 psi | 70% | 2421 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,285 psi | 82% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,560 psi | 81% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,208 psi | 71% | 2382 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,114 psi | 56% | 2313 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 50,198 psi | 80% | 2500 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 43,453 psi | 70% | 2411 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 39,349 psi | 63% | 2398 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,969 psi | 58% | 2303 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 80% | 47,979 psi | 77% | 2434 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,918 psi | 70% | 2434 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 33,185 psi | 53% | 2238 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 43,236 psi | 69% | 2438 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 34,548 psi | 55% | 2316 fps | 99.4% |
| Vihtavuori N560 | 63.5 gr | 86% | 41,263 psi | 66% | 2493 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 92% | 41,017 psi | 66% | 2480 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,801 psi | 69% | 2402 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,918 psi | 72% | 2493 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,224 psi | 44% | 2254 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 34,998 psi | 56% | 2283 fps | 95.2% |
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 78 powders for .300 Win. Mag. loaded with the .308 | 215gr | Berger Hybrid Target. Winchester StaBALL HD delivers the highest muzzle velocity at 2,802 fps; across all powders the maximum-charge window runs from 1,608 fps to 2,802 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, 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 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Win. 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.