Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 160gr | Nosler CT FailSafe bullet and 42 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Somchem S365 and ReloadSwiss RS 70.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100ᴾ | <<locked>> | 100% | 41,727 psi | 87% | 2543 fps | 97.2% |
| Accurate 4064 | <<locked>> | 82% | 42,569 psi | 89% | 2493 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 41,394 psi | 86% | 2552 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 82% | 41,292 psi | 86% | 2467 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 40,973 psi | 86% | 2487 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 90% | 40,712 psi | 85% | 2562 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 86% | 40,698 psi | 85% | 2585 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,784 psi | 83% | 2572 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 41,452 psi | 87% | 2671 fps | 98.6% |
| Bofors RP3 | <<locked>> | 82% | 40,828 psi | 85% | 2497 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 41,814 psi | 87% | 2503 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 88% | 41,118 psi | 86% | 2546 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 42,946 psi | 90% | 2552 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,534 psi | 74% | 1621 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,207 psi | 90% | 2497 fps | 96.3% |
| IMR 4831 | <<locked>> | 92% | 42,453 psi | 89% | 2556 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 42,888 psi | 90% | 2500 fps | 97.7% |
| Lovex S070 | <<locked>> | 90% | 43,294 psi | 90% | 2530 fps | 96.8% |
| Norma MRP | <<locked>> | 98% | 41,640 psi | 87% | 2631 fps | 95.9% |
| Norma URP | <<locked>> | 90% | 41,263 psi | 86% | 2549 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 82% | 43,149 psi | 90% | 2556 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 92% | 42,873 psi | 90% | 2589 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,274 psi | 76% | 1667 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,047 psi | 88% | 2487 fps | 96.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 40,596 psi | 85% | 2589 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,031 psi | 86% | 2572 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,017 psi | 86% | 2589 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 84% | 40,988 psi | 86% | 2493 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 42,888 psi | 90% | 2500 fps | 97.7% |
| Shooters World SW4350 | <<locked>> | 90% | 43,294 psi | 90% | 2530 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 42,148 psi | 88% | 2546 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 40,814 psi | 85% | 2379 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,337 psi | 88% | 2448 fps | 96.2% |
| Somchem S355 | <<locked>> | 84% | 41,829 psi | 87% | 2497 fps | 99.6% |
| Somchem S365 | <<locked>> | 94% | 42,119 psi | 88% | 2605 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 42,540 psi | 89% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 43,236 psi | 90% | 2549 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 90% | 42,322 psi | 88% | 2549 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 98% | 41,046 psi | 86% | 2595 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 42,917 psi | 90% | 2523 fps | 99.9% |
| Winchester 760 | <<locked>> | 88% | 41,365 psi | 86% | 2549 fps | 96.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,723 psi | 75% | 2592 fps | 99.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 36,260 psi | 76% | 2438 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 40,118 psi | 84% | 2451 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,298 psi | 61% | 2290 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 38,943 psi | 81% | 2421 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,653 psi | 81% | 2441 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,008 psi | 63% | 2303 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,214 psi | 69% | 2421 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 88% | 27,673 psi | 58% | 2274 fps | 95.8% |
| Alliant Reloder-26 | 48.2 gr | 92% | 33,591 psi | 70% | 2490 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 38,145 psi | 80% | 2444 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 80% | 39,131 psi | 82% | 2451 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 38,508 psi | 80% | 2493 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,427 psi | 57% | 2208 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 55% | 1447 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,785 psi | 85% | 2451 fps | 95.6% |
| IMR 4831 | <<locked>> | 82% | 30,530 psi | 64% | 2303 fps | 95.6% |
| Lovex S065 | <<locked>> | 82% | 35,621 psi | 74% | 2352 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 38,334 psi | 80% | 2431 fps | 95.4% |
| Norma MRP | <<locked>> | 96% | 39,015 psi | 82% | 2575 fps | 95% |
| Norma URP | <<locked>> | 80% | 29,921 psi | 63% | 2297 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 40,393 psi | 84% | 2507 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 35,404 psi | 74% | 2431 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,934 psi | 56% | 1486 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,479 psi | 82% | 2434 fps | 96.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,360 psi | 74% | 2480 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 31,198 psi | 65% | 2356 fps | 95.3% |
| ReloadSwiss RS 70 | 43.6 gr | 84% | 33,417 psi | 70% | 2411 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 36,027 psi | 75% | 2395 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,621 psi | 74% | 2352 fps | 95.7% |
| Shooters World SW4350 | <<locked>> | 86% | 38,334 psi | 80% | 2431 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,927 psi | 77% | 2444 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,406 psi | 80% | 2336 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 39,566 psi | 83% | 2398 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 36,927 psi | 77% | 2402 fps | 99% |
| Somchem S365 | 38.8 gr | 80% | 26,789 psi | 56% | 2251 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 35,027 psi | 73% | 2339 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 31,140 psi | 65% | 2297 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 30,719 psi | 64% | 2300 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 88% | 29,631 psi | 62% | 2343 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,995 psi | 65% | 2274 fps | 97.6% |
| Winchester 760 | <<locked>> | 86% | 38,783 psi | 81% | 2497 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 25,918 psi | 54% | 2287 fps | 95% |
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 42 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 160gr | Nosler CT FailSafe. Alliant Reloder-26 delivers the highest muzzle velocity at 2,671 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,671 fps. Accurate 3100 gives the best case fill at 100 %, and 42 of the 42 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Hodgdon TrailBoss 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, Somchem S365, ReloadSwiss RS 70 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 160gr | Nosler CT FailSafe 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.