Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 160gr | Winchester Silvertip bullet and 42 powders. The key underlying parameters are shown in the table above.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 43,279 psi | 90% | 2598 fps | 98.1% |
| Accurate 4350 | <<locked>> | 88% | 42,902 psi | 90% | 2608 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,611 psi | 87% | 2612 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 84% | 41,539 psi | 87% | 2631 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 41,118 psi | 86% | 2628 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,508 psi | 80% | 2592 fps | 97.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 42,960 psi | 90% | 2733 fps | 99.3% |
| Bofors RP7 | <<locked>> | 84% | 42,221 psi | 88% | 2513 fps | 96.2% |
| Hodgdon H414 | <<locked>> | 86% | 42,322 psi | 88% | 2598 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 41,423 psi | 87% | 2552 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 41,495 psi | 87% | 2612 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 75% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 42,583 psi | 89% | 2543 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,292 psi | 86% | 2493 fps | 96.4% |
| IMR 4831 | <<locked>> | 88% | 40,828 psi | 85% | 2552 fps | 99% |
| Lovex S065 | <<locked>> | 84% | 41,060 psi | 86% | 2497 fps | 97.8% |
| Lovex S070 | <<locked>> | 86% | 41,568 psi | 87% | 2526 fps | 96.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,537 psi | 81% | 2510 fps | 97% |
| Norma MRP | <<locked>> | 96% | 42,888 psi | 90% | 2694 fps | 97.1% |
| Norma URP | <<locked>> | 88% | 42,351 psi | 88% | 2595 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 41,350 psi | 86% | 2589 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,651 psi | 77% | 1706 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 41,321 psi | 86% | 2631 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 42,467 psi | 89% | 2625 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,756 psi | 87% | 2638 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 82% | 41,959 psi | 88% | 2536 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 42,221 psi | 88% | 2513 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,060 psi | 86% | 2497 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 86% | 41,568 psi | 87% | 2526 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 43,076 psi | 90% | 2589 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,062 psi | 90% | 2493 fps | 97.1% |
| Somchem S355 | <<locked>> | 82% | 42,453 psi | 89% | 2536 fps | 99.9% |
| Somchem S365 | <<locked>> | 90% | 40,683 psi | 85% | 2602 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 40,524 psi | 85% | 2543 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 82% | 40,553 psi | 85% | 2470 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 41,495 psi | 87% | 2546 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 98% | 42,366 psi | 89% | 2562 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 86% | 40,843 psi | 85% | 2549 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 96% | 42,888 psi | 90% | 2651 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 41,017 psi | 86% | 2520 fps | 99.9% |
| Winchester 760 | <<locked>> | 86% | 42,322 psi | 88% | 2598 fps | 97% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,305 psi | 82% | 2713 fps | 100% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 33,083 psi | 69% | 2392 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 32,445 psi | 68% | 2388 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,430 psi | 68% | 2402 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,332 psi | 76% | 2523 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,731 psi | 56% | 2270 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,055 psi | 71% | 2480 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 86% | 30,313 psi | 63% | 2431 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 39,740 psi | 83% | 2464 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 82% | 36,985 psi | 77% | 2487 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,849 psi | 62% | 2303 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 84% | 38,856 psi | 81% | 2556 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 56% | 1490 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 39,914 psi | 83% | 2490 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,667 psi | 81% | 2441 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 31,415 psi | 66% | 2346 fps | 96.5% |
| Lovex S065 | <<locked>> | 80% | 36,260 psi | 76% | 2395 fps | 96.5% |
| Lovex S070 | <<locked>> | 82% | 36,651 psi | 77% | 2425 fps | 95.5% |
| Lovex S071 | <<locked>> | 96% | 33,910 psi | 71% | 2411 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 37,536 psi | 78% | 2575 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 32,764 psi | 68% | 2392 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 82% | 33,968 psi | 71% | 2428 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 57% | 1519 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,624 psi | 81% | 2579 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,053 psi | 67% | 2402 fps | 96.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 31,923 psi | 67% | 2405 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 39,407 psi | 82% | 2487 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 39,740 psi | 83% | 2464 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,260 psi | 76% | 2395 fps | 96.5% |
| Shooters World SW4350 | <<locked>> | 82% | 36,651 psi | 77% | 2425 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,263 psi | 84% | 2536 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,884 psi | 79% | 2392 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 39,914 psi | 83% | 2487 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 29,370 psi | 61% | 2349 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 37,927 psi | 79% | 2490 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 38,130 psi | 80% | 2425 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 33,997 psi | 71% | 2388 fps | 97.1% |
| Vihtavuori N165 | <<locked>> | 96% | 39,856 psi | 83% | 2513 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 33,475 psi | 70% | 2392 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 82% | 26,992 psi | 56% | 2290 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,446 psi | 70% | 2362 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 37,202 psi | 78% | 2493 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 25,106 psi | 52% | 2293 fps | 95.5% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 68 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 160gr | Winchester Silvertip. Alliant Reloder-26 delivers the highest muzzle velocity at 2,733 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,733 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 68 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Bofors RP15, Hodgdon H1000 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. As outliers, Accurate High Country, Accurate MAGPRO, ADI AR 2209 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.