Load data for .300 H&H Mag. + .307 | 200gr | Frontier PH HPBT

.300 H&H Mag. cartridge drawing
Frontier Bullets logo

Load Specifications

Bullet Manufacturer:Frontier Bullets
Bullet Weight:200 gr
Bullet Diameter:0.307"
Bullet Length:<<locked>>
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:85.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:10.0

Load data in caliber .300 H&H Mag. with .307 | 200gr | Frontier PH HPBT bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Alliant Reloder-17.

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"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>82%54,940 psi88%2546 fps100%
Accurate 2700<<locked>>84%56,057 psi90%2615 fps99.2%
Accurate 3100ᴾ<<locked>>100%53,476 psi86%2657 fps99.8%
Accurate 4064<<locked>>84%55,361 psi89%2598 fps100%
Accurate 4350<<locked>>92%56,014 psi90%2703 fps100%
Accurate MAGPROᴾ<<locked>>100%55,637 psi89%2795 fps96.8%
ADI AR 2208<<locked>>86%55,477 psi89%2631 fps100%
ADI AR 2209<<locked>>96%53,330 psi86%2697 fps98.3%
ADI AR 2213ᴾ<<locked>>100%54,520 psi87%2746 fps97.5%
Alliant Power Pro 2000-MR<<locked>>82%54,476 psi87%2743 fps100%
Alliant Power Pro Varmint<<locked>>96%53,316 psi85%2694 fps98.4%
Alliant Reloder- TS 15.5<<locked>>86%56,130 psi90%2651 fps100%
Alliant Reloder-15<<locked>>84%56,376 psi90%2671 fps100%
Alliant Reloder-16<<locked>>92%53,142 psi85%2707 fps100%
Alliant Reloder-17<<locked>>88%54,259 psi87%2730 fps100%
Alliant Reloder-19<<locked>>98%55,999 psi90%2736 fps98.8%
Alliant Reloder-22ᴾ<<locked>>100%53,374 psi86%2743 fps98.6%
Alliant Reloder-23ᴾ<<locked>>100%50,270 psi81%2674 fps100%
Alliant Reloder-25ᴾ<<locked>>100%43,845 psi70%2612 fps99.4%
Alliant Reloder-26<<locked>>98%53,867 psi86%2808 fps100%
Bofors RP15ᴾ<<locked>>100%48,762 psi78%2667 fps97.7%
Bofors RP3<<locked>>84%53,417 psi86%2618 fps100%
Bofors RP5ᴾ<<locked>>100%53,374 psi86%2743 fps98.6%
Bofors RP7<<locked>>90%56,405 psi90%2657 fps99.3%
Hodgdon H380<<locked>>84%53,795 psi86%2635 fps100%
Hodgdon H414<<locked>>90%54,447 psi87%2703 fps99.5%
Hodgdon H4350<<locked>>88%54,418 psi87%2664 fps98.7%
Hodgdon H4831<<locked>>98%54,737 psi88%2694 fps96.8%
Hodgdon H4831 SC<<locked>>98%53,388 psi86%2671 fps96.6%
Hodgdon Hybrid 100V<<locked>>94%53,490 psi86%2635 fps100%
Hodgdon LEVERevolution<<locked>>82%55,042 psi88%2667 fps100%
Hodgdon Retumboᴾ<<locked>>100%42,917 psi69%2638 fps96.9%
Hodgdon Superformance<<locked>>90%54,462 psi87%2740 fps99.4%
Hodgdon TrailBossᴾ<<locked>>100%36,564 psi59%1627 fps100%
Hodgdon VARGET<<locked>>82%55,738 psi89%2631 fps100%
IMR 4064<<locked>>84%54,882 psi88%2612 fps100%
IMR 4166 Enduron<<locked>>82%53,925 psi86%2598 fps99.4%
IMR 4350<<locked>>92%53,969 psi87%2644 fps99.1%
IMR 4451 Enduron<<locked>>88%54,694 psi88%2635 fps99.4%
IMR 4831<<locked>>94%56,304 psi90%2694 fps100%
IMR 4895<<locked>>82%54,331 psi87%2648 fps100%
IMR 4955 Enduron<<locked>>98%56,289 psi90%2680 fps97.3%
IMR 7828 SSCᴾ<<locked>>100%51,764 psi83%2713 fps97%
Lovex S060<<locked>>82%56,304 psi90%2595 fps100%
Lovex S062<<locked>>84%55,042 psi88%2605 fps100%
Lovex S065<<locked>>90%54,679 psi88%2631 fps99.9%
Lovex S070<<locked>>92%55,796 psi89%2667 fps99.7%
Lovex S071ᴾ<<locked>>100%44,672 psi72%2523 fps98.9%
Norma 201<<locked>>82%56,304 psi90%2612 fps100%
Norma 203B<<locked>>84%55,666 psi89%2657 fps100%
Norma 204<<locked>>92%54,520 psi87%2690 fps98.4%
Norma MRP<<locked>>98%52,692 psi84%2762 fps99.4%
Norma URP<<locked>>92%54,563 psi87%2687 fps100%
Ramshot Big Game<<locked>>84%56,434 psi90%2684 fps100%
Ramshot Grandᴾ<<locked>>100%52,011 psi83%2730 fps97.4%
Ramshot Hunter<<locked>>92%53,476 psi86%2694 fps99.8%
Ramshot Magnumᴾ<<locked>>100%46,427 psi74%2615 fps97.9%
ReloadSwiss RS 14ᴾ<<locked>>100%37,188 psi60%1663 fps100%
ReloadSwiss RS 50<<locked>>84%53,635 psi86%2621 fps99.6%
ReloadSwiss RS 60<<locked>>86%53,751 psi86%2720 fps100%
ReloadSwiss RS 62<<locked>>92%55,811 psi89%2726 fps100%
ReloadSwiss RS 70<<locked>>92%54,099 psi87%2753 fps100%
ReloadSwiss RS 76ᴾ<<locked>>100%42,815 psi69%2635 fps98%
Rottweil R 902<<locked>>82%53,824 psi86%2572 fps100%
Rottweil R 903<<locked>>86%53,548 psi86%2615 fps100%
Rottweil R 904<<locked>>96%54,955 psi88%2667 fps97.6%
Rottweil R 905<<locked>>98%55,201 psi89%2723 fps98.8%
Rottweil R 907<<locked>>90%56,405 psi90%2657 fps99.3%
Shooters World Long Rifle<<locked>>90%54,679 psi88%2631 fps99.9%
Shooters World Precision<<locked>>84%55,042 psi88%2605 fps100%
Shooters World SW4350<<locked>>92%55,796 psi89%2667 fps99.7%
SNPE Vectan SP 11<<locked>>86%55,114 psi88%2674 fps100%
SNPE Vectan SP 9<<locked>>82%56,231 psi90%2644 fps100%
SNPE Vectan Tubal 5000<<locked>>86%54,795 psi88%2510 fps100%
SNPE Vectan Tubal 7000<<locked>>90%54,302 psi87%2585 fps99.4%
SNPE Vectan Tubal 8000<<locked>>98%54,723 psi88%2717 fps98.7%
Somchem S355<<locked>>86%53,606 psi86%2612 fps100%
Somchem S361<<locked>>94%53,055 psi85%2612 fps96.4%
Somchem S365<<locked>>94%53,983 psi87%2694 fps100%
Somchem S385<<locked>>98%55,927 psi90%2700 fps99.3%
Vihtavuori N135<<locked>>82%54,143 psi87%2533 fps100%
Vihtavuori N140<<locked>>82%54,172 psi87%2546 fps100%
Vihtavuori N150<<locked>>88%54,766 psi88%2589 fps100%
Vihtavuori N160<<locked>>90%53,316 psi85%2635 fps100%
Vihtavuori N165ᴾ<<locked>>100%51,547 psi83%2625 fps98.5%
Vihtavuori N540<<locked>>84%55,724 psi89%2589 fps100%
Vihtavuori N550<<locked>>92%55,825 psi90%2690 fps100%
Vihtavuori N555<<locked>>98%52,953 psi85%2700 fps100%
Vihtavuori N560<<locked>>98%53,069 psi85%2753 fps96.9%
Winchester 6.5 StaBALL<<locked>>92%56,405 psi90%2654 fps100%
Winchester 760<<locked>>90%54,737 psi88%2707 fps99.5%
Winchester StaBALL HDᴾ<<locked>>100%45,440 psi73%2733 fps100%
Winchester StaBALL Match<<locked>>82%56,173 psi90%2651 fps100%
Winchester Supreme 780ᴾ<<locked>>100%56,028 psi90%2697 fps98.7%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>80%51,735 psi83%2503 fps100%
Accurate 2700<<locked>>80%49,327 psi79%2516 fps98.3%
Accurate 3100<<locked>>84%31,241 psi50%2251 fps95.1%
Accurate 4064<<locked>>80%49,037 psi79%2513 fps100%
Accurate 4350<<locked>>80%37,260 psi60%2395 fps98.7%
Accurate MAGPRO<<locked>>96%48,327 psi77%2677 fps95.1%
ADI AR 2208<<locked>>80%46,238 psi74%2490 fps99.9%
ADI AR 2209<<locked>>88%41,075 psi66%2480 fps95.5%
ADI AR 2213<<locked>>96%47,674 psi76%2631 fps95.9%
Alliant Power Pro 2000-MR<<locked>>80%50,836 psi82%2690 fps100%
Alliant Power Pro Varmint<<locked>>88%41,350 psi66%2484 fps95.7%
Alliant Reloder- TS 15.5<<locked>>80%46,543 psi75%2510 fps100%
Alliant Reloder-15<<locked>>80%49,792 psi80%2575 fps100%
Alliant Reloder-16<<locked>>80%36,303 psi58%2402 fps98.8%
Alliant Reloder-1755.2 gr80%41,147 psi66%2520 fps100%
Alliant Reloder-19<<locked>>88%40,886 psi66%2477 fps95.6%
Alliant Reloder-22<<locked>>92%40,828 psi65%2520 fps95.7%
Alliant Reloder-23<<locked>>80%26,716 psi43%2182 fps96.8%
Alliant Reloder-25<<locked>>90%32,111 psi51%2346 fps95.9%
Alliant Reloder-2658 gr82%30,385 psi49%2343 fps96.1%
Bofors RP15<<locked>>94%40,277 psi65%2510 fps95.4%
Bofors RP3<<locked>>80%47,007 psi75%2523 fps100%
Bofors RP5<<locked>>92%40,828 psi65%2520 fps95.7%
Bofors RP7<<locked>>80%41,307 psi66%2405 fps96.8%
Hodgdon H380<<locked>>80%47,181 psi76%2533 fps99.7%
Hodgdon H414<<locked>>80%39,233 psi63%2438 fps96.9%
Hodgdon H4350<<locked>>80%42,192 psi68%2457 fps96.3%
Hodgdon H4831<<locked>>94%47,834 psi77%2582 fps95.3%
Hodgdon H4831 SC<<locked>>94%46,891 psi75%2566 fps95%
Hodgdon Hybrid 100V<<locked>>80%33,924 psi54%2306 fps99.2%
Hodgdon LEVERevolution<<locked>>80%51,430 psi82%2618 fps100%
Hodgdon Retumbo<<locked>>98%40,306 psi65%2582 fps96%
Hodgdon Superformance<<locked>>80%38,029 psi61%2444 fps96%
Hodgdon TrailBoss<<locked>>80%27,209 psi44%1450 fps100%
Hodgdon VARGET<<locked>>80%52,373 psi84%2582 fps100%
IMR 4064<<locked>>80%48,631 psi78%2520 fps100%
IMR 4166 Enduron<<locked>>80%50,720 psi81%2546 fps99%
IMR 4350<<locked>>80%36,985 psi59%2339 fps95.5%
IMR 4451 Enduron<<locked>>80%42,786 psi69%2434 fps97.6%
IMR 4831<<locked>>80%35,940 psi58%2356 fps98.5%
IMR 4895<<locked>>80%51,053 psi82%2602 fps100%
IMR 4955 Enduron<<locked>>92%46,789 psi75%2530 fps95.2%
IMR 7828 SSC<<locked>>96%45,484 psi73%2602 fps95.4%
Lovex S060<<locked>>80%53,243 psi85%2552 fps100%
Lovex S062<<locked>>80%48,849 psi78%2516 fps100%
Lovex S065<<locked>>80%40,379 psi65%2392 fps98.3%
Lovex S070<<locked>>80%38,464 psi62%2372 fps96.8%
Lovex S071<<locked>>90%32,561 psi52%2283 fps95.7%
Norma 201<<locked>>80%53,200 psi85%2572 fps100%
Norma 203B<<locked>>80%49,124 psi79%2562 fps100%
Norma 204<<locked>>84%41,524 psi67%2470 fps95.5%
Norma MRP<<locked>>86%35,056 psi56%2425 fps95.2%
Norma URP<<locked>>80%37,028 psi59%2388 fps98.5%
Ramshot Big Game<<locked>>80%49,298 psi79%2585 fps100%
Ramshot Grand<<locked>>96%45,237 psi73%2612 fps95.7%
Ramshot Hunter<<locked>>80%35,868 psi58%2379 fps96.7%
Ramshot Magnum<<locked>>94%37,420 psi60%2438 fps95.1%
ReloadSwiss RS 14<<locked>>80%27,847 psi45%1486 fps100%
ReloadSwiss RS 50<<locked>>80%47,224 psi76%2520 fps99%
ReloadSwiss RS 60<<locked>>80%43,714 psi70%2569 fps100%
ReloadSwiss RS 62<<locked>>80%36,898 psi59%2411 fps98.4%
ReloadSwiss RS 7056 gr80%35,839 psi57%2418 fps97.8%
ReloadSwiss RS 76<<locked>>96%37,115 psi60%2503 fps95.9%
Rottweil R 902<<locked>>80%50,560 psi81%2523 fps100%
Rottweil R 903<<locked>>80%44,179 psi71%2474 fps100%
Rottweil R 904<<locked>>90%45,455 psi73%2513 fps95.5%
Rottweil R 905<<locked>>88%39,813 psi64%2461 fps95.5%
Rottweil R 907<<locked>>80%41,307 psi66%2405 fps96.8%
Shooters World Long Rifle<<locked>>80%40,379 psi65%2392 fps98.3%
Shooters World Precision<<locked>>80%48,849 psi78%2516 fps100%
Shooters World SW4350<<locked>>80%38,464 psi62%2372 fps96.8%
SNPE Vectan SP 11<<locked>>80%45,223 psi73%2523 fps100%
SNPE Vectan SP 9<<locked>>80%52,663 psi84%2595 fps100%
SNPE Vectan Tubal 5000<<locked>>80%45,440 psi73%2382 fps100%
SNPE Vectan Tubal 7000<<locked>>80%39,378 psi63%2339 fps96.9%
SNPE Vectan Tubal 8000<<locked>>88%39,436 psi63%2454 fps95.3%
Somchem S355<<locked>>80%44,657 psi72%2474 fps100%
Somchem S361<<locked>>92%49,661 psi80%2556 fps95.7%
Somchem S365<<locked>>80%33,518 psi54%2349 fps99.9%
Somchem S385<<locked>>86%38,058 psi61%2395 fps95.8%
Vihtavuori N135<<locked>>80%50,778 psi81%2487 fps100%
Vihtavuori N140<<locked>>80%50,923 psi82%2503 fps100%
Vihtavuori N150<<locked>>80%42,438 psi68%2405 fps100%
Vihtavuori N160<<locked>>80%38,450 psi62%2388 fps98.8%
Vihtavuori N165<<locked>>90%37,333 psi60%2375 fps95.1%
Vihtavuori N540<<locked>>80%49,110 psi79%2500 fps100%
Vihtavuori N550<<locked>>80%37,855 psi61%2388 fps98.5%
Vihtavuori N555<<locked>>80%29,341 psi47%2251 fps96.9%
Vihtavuori N560<<locked>>94%46,499 psi75%2641 fps95.3%
Winchester 6.5 StaBALL<<locked>>80%37,521 psi60%2362 fps99.8%
Winchester 760<<locked>>80%39,233 psi63%2438 fps96.9%
Winchester StaBALL HD<<locked>>80%23,511 psi38%2152 fps95.3%
Winchester StaBALL Match<<locked>>80%52,837 psi85%2605 fps100%
Winchester Supreme 780<<locked>>90%39,784 psi64%2428 fps95.1%

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.

<<locked>> you need an access license to unlock this data.

This overview compares 94 powders for .300 H&H Mag. loaded with the .307 | 200gr | Frontier PH HPBT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,808 fps; across all powders the maximum-charge window runs from 1,627 fps to 2,808 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (430 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.307" calls for a 1:10.0 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, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for .300 H&H Mag. with the .307 | 200gr | Frontier PH HPBT 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.

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