Load Specifications
Load data in caliber .300 H&H Mag. with .300 | 220gr | Berry's Spire Point bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Accurate MAGPRO.
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% | 53,519 psi | 86% | 2549 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,477 psi | 89% | 2582 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 55,506 psi | 89% | 2687 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 82% | 53,708 psi | 86% | 2497 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,043 psi | 90% | 2631 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 96% | 53,592 psi | 86% | 2631 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,802 psi | 72% | 2484 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,639 psi | 64% | 2448 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,998 psi | 88% | 2520 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,115 psi | 90% | 2628 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,505 psi | 86% | 2595 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,376 psi | 89% | 2618 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,243 psi | 85% | 2628 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,099 psi | 87% | 2602 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,995 psi | 80% | 2608 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,099 psi | 87% | 2687 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 55,912 psi | 90% | 2598 fps | 96.2% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,753 psi | 89% | 2664 fps | 99.5% |
| Bofors RP3 | <<locked>> | 82% | 55,854 psi | 90% | 2533 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,774 psi | 73% | 2546 fps | 97.7% |
| Bofors RP5 | <<locked>> | 96% | 53,243 psi | 85% | 2628 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 54,839 psi | 88% | 2530 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,284 psi | 79% | 2562 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 82% | 55,927 psi | 90% | 2552 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 53,592 psi | 86% | 2579 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 53,243 psi | 85% | 2543 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 53,853 psi | 86% | 2579 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,231 psi | 90% | 2615 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,376 psi | 90% | 2556 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,936 psi | 78% | 2661 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 86% | 53,679 psi | 86% | 2615 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,854 psi | 59% | 1568 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,144 psi | 90% | 2569 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,405 psi | 90% | 2552 fps | 99.9% |
| IMR 4831 | <<locked>> | 90% | 55,651 psi | 89% | 2569 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,172 psi | 88% | 2566 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 98% | 55,042 psi | 88% | 2664 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 53,417 psi | 86% | 2503 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,810 psi | 88% | 2549 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,937 psi | 82% | 2513 fps | 100% |
| Norma 204 | <<locked>> | 88% | 53,287 psi | 85% | 2569 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 35,215 psi | 56% | 2379 fps | 96.6% |
| Norma MRP | <<locked>> | 94% | 52,794 psi | 85% | 2648 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 53,969 psi | 87% | 2566 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,550 psi | 89% | 2684 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 90% | 56,173 psi | 90% | 2618 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,417 psi | 86% | 2621 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,768 psi | 61% | 1608 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,593 psi | 89% | 2539 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,040 psi | 85% | 2582 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,158 psi | 88% | 2602 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,519 psi | 86% | 2628 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,008 psi | 79% | 2657 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 84% | 56,014 psi | 90% | 2530 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,041 psi | 87% | 2552 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 94% | 55,027 psi | 88% | 2612 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 54,839 psi | 88% | 2530 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,417 psi | 86% | 2503 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,810 psi | 88% | 2549 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,911 psi | 86% | 2539 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,246 psi | 90% | 2411 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,246 psi | 90% | 2510 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,578 psi | 88% | 2608 fps | 99.5% |
| Somchem S355 | <<locked>> | 84% | 55,782 psi | 89% | 2526 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,550 psi | 89% | 2549 fps | 98.2% |
| Somchem S365 | <<locked>> | 90% | 53,853 psi | 86% | 2566 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,361 psi | 89% | 2585 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 53,490 psi | 86% | 2457 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,956 psi | 90% | 2559 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,897 psi | 88% | 2569 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 55,071 psi | 88% | 2566 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,185 psi | 85% | 2582 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,895 psi | 85% | 2644 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,272 psi | 84% | 2621 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,158 psi | 88% | 2523 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,809 psi | 86% | 2582 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,273 psi | 87% | 2726 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,361 psi | 89% | 2582 fps | 99.4% |
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% | 31,328 psi | 50% | 2159 fps | 96.6% |
| Accurate 4350 | <<locked>> | 80% | 42,308 psi | 68% | 2382 fps | 99.9% |
| Accurate MAGPRO | 65.1 gr | 90% | 45,078 psi | 72% | 2516 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 50,589 psi | 81% | 2451 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 35,505 psi | 57% | 2267 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 88% | 41,147 psi | 66% | 2415 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 96% | 39,334 psi | 63% | 2375 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 94% | 32,851 psi | 53% | 2287 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,547 psi | 83% | 2470 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,727 psi | 65% | 2388 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,630 psi | 75% | 2497 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 35,433 psi | 57% | 2267 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 84% | 35,824 psi | 57% | 2316 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,153 psi | 48% | 2185 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,195 psi | 45% | 2152 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,474 psi | 52% | 2300 fps | 98.4% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 52,678 psi | 84% | 2549 fps | 95.4% |
| Bofors RP15 | <<locked>> | 86% | 35,563 psi | 57% | 2310 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 52,315 psi | 84% | 2487 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 37,507 psi | 60% | 2385 fps | 95.3% |
| Bofors RP5 | <<locked>> | 84% | 35,824 psi | 57% | 2316 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 45,556 psi | 73% | 2385 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 37,739 psi | 61% | 2346 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 52,431 psi | 84% | 2503 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,961 psi | 70% | 2425 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 46,760 psi | 75% | 2441 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 88% | 43,961 psi | 70% | 2421 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,134 psi | 69% | 2405 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,290 psi | 61% | 2287 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,520 psi | 57% | 2379 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 42,946 psi | 69% | 2444 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,572 psi | 44% | 1398 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,075 psi | 66% | 2326 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,021 psi | 75% | 2411 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 40,524 psi | 65% | 2339 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,120 psi | 69% | 2369 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 88% | 39,421 psi | 63% | 2392 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 44,469 psi | 71% | 2365 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 42,757 psi | 69% | 2356 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 28,819 psi | 46% | 2096 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 40,814 psi | 65% | 2359 fps | 96.8% |
| Norma 217 | <<locked>> | 98% | 33,112 psi | 53% | 2326 fps | 95.7% |
| Norma MRP | 56.8 gr | 80% | 32,605 psi | 52% | 2270 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 41,684 psi | 67% | 2372 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 38,957 psi | 62% | 2395 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 40,509 psi | 65% | 2372 fps | 99% |
| Ramshot Magnum | <<locked>> | 88% | 34,693 psi | 56% | 2290 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,239 psi | 45% | 1434 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,156 psi | 84% | 2493 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,516 psi | 79% | 2536 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,061 psi | 67% | 2402 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,495 psi | 65% | 2418 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 32,256 psi | 52% | 2300 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 49,284 psi | 79% | 2441 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 39,407 psi | 63% | 2303 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 34,650 psi | 56% | 2251 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 45,556 psi | 73% | 2385 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,469 psi | 71% | 2365 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 42,757 psi | 69% | 2356 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,517 psi | 81% | 2493 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,980 psi | 80% | 2336 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,482 psi | 70% | 2320 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 34,330 psi | 55% | 2247 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 49,240 psi | 79% | 2434 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 42,743 psi | 69% | 2346 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 38,421 psi | 62% | 2336 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,230 psi | 56% | 2241 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 80% | 47,094 psi | 76% | 2372 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,120 psi | 69% | 2369 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 34,664 psi | 56% | 2224 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 42,496 psi | 68% | 2372 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 33,852 psi | 54% | 2254 fps | 99.2% |
| Vihtavuori N560 | 61 gr | 86% | 40,292 psi | 65% | 2421 fps | 95% |
| Vihtavuori N565 | <<locked>> | 92% | 39,943 psi | 64% | 2411 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,105 psi | 68% | 2339 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,150 psi | 71% | 2428 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,716 psi | 43% | 2192 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,666 psi | 59% | 2270 fps | 95.7% |
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 H&H Mag. loaded with the .300 | 220gr | Berry's Spire Point. Winchester StaBALL HD delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,568 fps to 2,726 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 56–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.308" calls for a 1:13.0 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. Vihtavuori N560, Norma MRP, Accurate MAGPRO rank at the top here: for .300 H&H Mag. with the .300 | 220gr | Berry's Spire Point 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.