Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 215gr | Sierra Hollow Point Boat Tail - Closed Nose bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Ramshot Grand and Accurate High Country.
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>> | 94% | 56,579 psi | 89% | 2674 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,418 psi | 85% | 2651 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 54,462 psi | 85% | 2769 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 92% | 55,216 psi | 87% | 2769 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 90% | 54,882 psi | 86% | 2707 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 56,333 psi | 88% | 2766 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,473 psi | 79% | 2677 fps | 98.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,107 psi | 71% | 2644 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,361 psi | 87% | 2700 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,188 psi | 88% | 2710 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,534 psi | 85% | 2697 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,434 psi | 88% | 2762 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 54,070 psi | 85% | 2680 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 2792 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,375 psi | 85% | 2766 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,389 psi | 85% | 2677 fps | 96.8% |
| Bofors RP15 | <<locked>> | 96% | 55,608 psi | 87% | 2749 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 2743 fps | 99.4% |
| Bofors RP5 | <<locked>> | 94% | 56,434 psi | 88% | 2762 fps | 99.9% |
| Bofors RP7 | <<locked>> | 84% | 56,362 psi | 88% | 2648 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,637 psi | 87% | 2756 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 55,970 psi | 88% | 2703 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,897 psi | 86% | 2657 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 56,231 psi | 88% | 2707 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,056 psi | 86% | 2690 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,405 psi | 87% | 2628 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,898 psi | 88% | 2864 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,115 psi | 88% | 2736 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,304 psi | 58% | 1654 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,534 psi | 85% | 2638 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,360 psi | 85% | 2618 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 54,694 psi | 86% | 2644 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,261 psi | 90% | 2690 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 94% | 54,230 psi | 85% | 2746 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,698 psi | 64% | 2552 fps | 96.9% |
| Lovex S065 | <<locked>> | 84% | 55,056 psi | 86% | 2618 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,855 psi | 89% | 2667 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 54,201 psi | 85% | 2641 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,521 psi | 87% | 2690 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 40,843 psi | 64% | 2575 fps | 98.9% |
| Norma MRP | <<locked>> | 92% | 56,391 psi | 88% | 2782 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,362 psi | 88% | 2680 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,071 psi | 86% | 2769 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 55,143 psi | 86% | 2690 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,188 psi | 90% | 2759 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,145 psi | 60% | 1693 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 54,288 psi | 85% | 2674 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,391 psi | 88% | 2749 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 2864 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,517 psi | 81% | 2759 fps | 98.2% |
| Rottweil R 904 | <<locked>> | 90% | 56,057 psi | 88% | 2677 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 92% | 57,682 psi | 90% | 2740 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 56,362 psi | 88% | 2648 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,056 psi | 86% | 2618 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,855 psi | 89% | 2667 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,421 psi | 90% | 2513 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,696 psi | 90% | 2621 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,232 psi | 90% | 2733 fps | 99.9% |
| Somchem S355 | <<locked>> | 82% | 57,493 psi | 90% | 2635 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,624 psi | 90% | 2674 fps | 99% |
| Somchem S365 | <<locked>> | 88% | 56,913 psi | 89% | 2684 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,607 psi | 86% | 2661 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 55,158 psi | 86% | 2562 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,592 psi | 86% | 2625 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,041 psi | 85% | 2644 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 57,261 psi | 90% | 2680 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,478 psi | 89% | 2707 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,173 psi | 88% | 2782 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 98% | 55,970 psi | 88% | 2762 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,649 psi | 83% | 2762 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,479 psi | 90% | 2631 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,970 psi | 88% | 2703 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,753 psi | 87% | 2812 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,273 psi | 85% | 2657 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% | 35,462 psi | 56% | 2320 fps | 98.5% |
| Accurate 4350 | <<locked>> | 80% | 47,384 psi | 74% | 2546 fps | 100% |
| Accurate High Country | 64.8 gr | 80% | 38,377 psi | 60% | 2474 fps | 95.9% |
| Accurate MAGPRO | 69.4 gr | 84% | 41,785 psi | 65% | 2536 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 39,494 psi | 62% | 2438 fps | 97.3% |
| ADI AR 2213 | <<locked>> | 82% | 37,695 psi | 59% | 2428 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 90% | 36,434 psi | 57% | 2398 fps | 95% |
| ADI AR 2225 | <<locked>> | 88% | 30,661 psi | 48% | 2306 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,382 psi | 71% | 2552 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,518 psi | 82% | 2661 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,494 psi | 62% | 2431 fps | 97.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,360 psi | 55% | 2379 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,142 psi | 54% | 2346 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,660 psi | 46% | 2267 fps | 97.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,362 psi | 59% | 2480 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,066 psi | 75% | 2569 fps | 95.2% |
| Bofors RP15 | <<locked>> | 82% | 35,230 psi | 55% | 2375 fps | 95.9% |
| Bofors RP30 | <<locked>> | 88% | 35,418 psi | 56% | 2415 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 35,360 psi | 55% | 2379 fps | 96.1% |
| Bofors RP7 | <<locked>> | 80% | 49,879 psi | 78% | 2549 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 34,795 psi | 55% | 2362 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 49,052 psi | 77% | 2595 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 51,416 psi | 81% | 2605 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 40,234 psi | 63% | 2434 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 82% | 39,523 psi | 62% | 2418 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,873 psi | 67% | 2441 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 32,982 psi | 52% | 2398 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 48,617 psi | 76% | 2625 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,862 psi | 44% | 1473 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,281 psi | 71% | 2487 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,198 psi | 80% | 2569 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 45,005 psi | 71% | 2493 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,305 psi | 62% | 2379 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 84% | 38,740 psi | 61% | 2464 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 96% | 35,810 psi | 56% | 2441 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 48,791 psi | 76% | 2523 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,195 psi | 74% | 2520 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 30,719 psi | 48% | 2211 fps | 97% |
| Norma 204 | <<locked>> | 80% | 45,426 psi | 71% | 2530 fps | 98.5% |
| Norma 217 | <<locked>> | 92% | 31,415 psi | 49% | 2356 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 36,927 psi | 58% | 2444 fps | 98% |
| Norma URP | <<locked>> | 80% | 46,499 psi | 73% | 2536 fps | 100% |
| Ramshot Grand | 65.9 gr | 82% | 35,839 psi | 56% | 2411 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 45,295 psi | 71% | 2536 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 31,879 psi | 50% | 2300 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,514 psi | 45% | 1509 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,297 psi | 74% | 2569 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,498 psi | 71% | 2589 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 82% | 29,776 psi | 47% | 2310 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 41,089 psi | 64% | 2569 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 40,901 psi | 64% | 2418 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 80% | 38,972 psi | 61% | 2421 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 80% | 49,879 psi | 78% | 2549 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,791 psi | 76% | 2523 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,195 psi | 74% | 2520 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,215 psi | 85% | 2474 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,776 psi | 75% | 2477 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,638 psi | 61% | 2415 fps | 97.2% |
| Somchem S355 | <<locked>> | 80% | 54,099 psi | 85% | 2589 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,466 psi | 65% | 2408 fps | 95.9% |
| Somchem S365 | <<locked>> | 80% | 43,540 psi | 68% | 2493 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,450 psi | 62% | 2405 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 80% | 51,837 psi | 81% | 2520 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,776 psi | 75% | 2526 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,142 psi | 54% | 2287 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 80% | 47,181 psi | 74% | 2533 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,276 psi | 60% | 2415 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 39,900 psi | 63% | 2493 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 86% | 37,347 psi | 59% | 2431 fps | 95% |
| Vihtavuori N568 | <<locked>> | 94% | 42,598 psi | 67% | 2585 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,905 psi | 74% | 2490 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,052 psi | 77% | 2595 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,356 psi | 48% | 2372 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,085 psi | 57% | 2336 fps | 96.2% |
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 79 powders for .300 Weath. Mag. loaded with the .308 | 215gr | Sierra Hollow Point Boat Tail - Closed Nose. Hodgdon Retumbo delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,654 fps to 2,864 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 215.0 gr projectile in 0.308" calls for a 1:11.0 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. Accurate MAGPRO, Ramshot Grand, Accurate High Country rank at the top here: for .300 Weath. Mag. with the .308 | 215gr | Sierra Hollow Point Boat Tail - Closed Nose they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-33, IMR 7977 Enduron 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.