Load Specifications
Load data in caliber 7 mm Exp. Rem. with .284 | 170gr | Sierra RN Prohunter bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Alliant Reloder-16.
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: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 51,459 psi | 88% | 2493 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,112 psi | 89% | 2582 fps | 99.3% |
| Accurate 4064 | <<locked>> | 82% | 50,894 psi | 87% | 2490 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 50,981 psi | 87% | 2579 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 84% | 51,068 psi | 87% | 2513 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 51,967 psi | 88% | 2612 fps | 97.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,127 psi | 90% | 2657 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 51,634 psi | 88% | 2536 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 51,982 psi | 88% | 2556 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 52,025 psi | 89% | 2635 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 52,634 psi | 90% | 2651 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 51,372 psi | 87% | 2605 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,779 psi | 88% | 2654 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,907 psi | 83% | 2598 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,685 psi | 73% | 2523 fps | 98.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 51,909 psi | 88% | 2720 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,514 psi | 81% | 2585 fps | 96.4% |
| Bofors RP3 | <<locked>> | 84% | 52,315 psi | 89% | 2552 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,779 psi | 88% | 2654 fps | 97.5% |
| Bofors RP7 | <<locked>> | 88% | 51,967 psi | 88% | 2533 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 84% | 52,736 psi | 90% | 2562 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 49,676 psi | 85% | 2572 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 88% | 53,156 psi | 90% | 2589 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,098 psi | 89% | 2566 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,069 psi | 90% | 2657 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,477 psi | 62% | 1594 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 50,473 psi | 86% | 2497 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 52,982 psi | 90% | 2526 fps | 98.8% |
| IMR 4350 | <<locked>> | 92% | 52,605 psi | 90% | 2566 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 50,328 psi | 86% | 2510 fps | 98.3% |
| IMR 4831 | <<locked>> | 92% | 51,387 psi | 87% | 2572 fps | 99.9% |
| Lovex S062 | <<locked>> | 82% | 50,676 psi | 86% | 2493 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 50,285 psi | 86% | 2510 fps | 99.3% |
| Lovex S070 | <<locked>> | 90% | 51,285 psi | 87% | 2546 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,337 psi | 74% | 2444 fps | 97.9% |
| Norma 203B | <<locked>> | 82% | 51,285 psi | 87% | 2543 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,997 psi | 90% | 2608 fps | 97.4% |
| Norma MRP | <<locked>> | 98% | 51,126 psi | 87% | 2677 fps | 98.6% |
| Norma URP | <<locked>> | 90% | 49,864 psi | 85% | 2562 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 82% | 51,532 psi | 88% | 2562 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,647 psi | 86% | 2641 fps | 96% |
| Ramshot Hunter | <<locked>> | 92% | 51,924 psi | 88% | 2612 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,947 psi | 77% | 2523 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,999 psi | 63% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 52,547 psi | 89% | 2546 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 52,402 psi | 89% | 2648 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 50,488 psi | 86% | 2595 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 52,808 psi | 90% | 2674 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,510 psi | 71% | 2533 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 82% | 52,547 psi | 89% | 2503 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,518 psi | 89% | 2549 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 50,285 psi | 86% | 2536 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 96% | 50,488 psi | 86% | 2592 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 88% | 51,967 psi | 88% | 2533 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 50,285 psi | 86% | 2510 fps | 99.3% |
| Shooters World Precision | <<locked>> | 82% | 50,676 psi | 86% | 2493 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 51,285 psi | 87% | 2546 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 50,473 psi | 86% | 2552 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 50,633 psi | 86% | 2408 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,142 psi | 90% | 2513 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 50,038 psi | 85% | 2585 fps | 97.1% |
| Somchem S355 | <<locked>> | 86% | 52,359 psi | 89% | 2543 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 52,301 psi | 89% | 2618 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 51,256 psi | 87% | 2572 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 82% | 52,924 psi | 90% | 2470 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 50,488 psi | 86% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 52,025 psi | 89% | 2562 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,299 psi | 86% | 2546 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 82% | 51,184 psi | 87% | 2477 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 50,952 psi | 87% | 2566 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 51,271 psi | 87% | 2618 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 51,184 psi | 87% | 2533 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 49,980 psi | 85% | 2575 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,077 psi | 75% | 2648 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,923 psi | 87% | 2562 fps | 97% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 80% | 48,312 psi | 82% | 2444 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 34,780 psi | 59% | 2277 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 47,776 psi | 81% | 2444 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,274 psi | 62% | 2316 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 45,266 psi | 77% | 2421 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 45,701 psi | 78% | 2507 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 98% | 49,763 psi | 85% | 2602 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,484 psi | 77% | 2441 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,791 psi | 83% | 2507 fps | 99.9% |
| Alliant Reloder-16 | 42.9 gr | 80% | 35,462 psi | 60% | 2323 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,972 psi | 68% | 2438 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,237 psi | 77% | 2500 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,366 psi | 72% | 2490 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,962 psi | 44% | 2100 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,228 psi | 57% | 2310 fps | 95.1% |
| Alliant Reloder-26 | 49.7 gr | 84% | 31,459 psi | 54% | 2303 fps | 95.3% |
| Bofors RP15 | <<locked>> | 98% | 44,556 psi | 76% | 2530 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 45,687 psi | 78% | 2451 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,366 psi | 72% | 2490 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 40,350 psi | 69% | 2329 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 46,151 psi | 79% | 2461 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 38,174 psi | 65% | 2359 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 44,034 psi | 75% | 2434 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,967 psi | 56% | 2231 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 82% | 39,842 psi | 68% | 2425 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 46% | 1417 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,630 psi | 81% | 2451 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,792 psi | 85% | 2477 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 40,988 psi | 70% | 2365 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,771 psi | 71% | 2359 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 34,954 psi | 60% | 2277 fps | 97.4% |
| Lovex S062 | <<locked>> | 80% | 47,834 psi | 81% | 2451 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,407 psi | 67% | 2316 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 37,681 psi | 64% | 2297 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 35,839 psi | 61% | 2300 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 48,167 psi | 82% | 2493 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,337 psi | 74% | 2444 fps | 95% |
| Norma MRP | 51.7 gr | 90% | 38,914 psi | 66% | 2448 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 36,143 psi | 62% | 2313 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 80% | 48,124 psi | 82% | 2510 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,326 psi | 81% | 2585 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 34,983 psi | 60% | 2297 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 98% | 42,018 psi | 72% | 2470 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,601 psi | 47% | 1453 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,137 psi | 79% | 2444 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,496 psi | 72% | 2490 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,955 psi | 61% | 2333 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 34,911 psi | 59% | 2333 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,725 psi | 66% | 2470 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 49,647 psi | 85% | 2461 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,192 psi | 74% | 2405 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 47,456 psi | 81% | 2487 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 44,251 psi | 75% | 2484 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 40,350 psi | 69% | 2329 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,407 psi | 67% | 2316 fps | 97.3% |
| Shooters World Precision | <<locked>> | 80% | 47,834 psi | 81% | 2451 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,681 psi | 64% | 2297 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,179 psi | 75% | 2451 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,701 psi | 76% | 2323 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,624 psi | 66% | 2267 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,830 psi | 75% | 2477 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 43,511 psi | 74% | 2402 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 32,518 psi | 55% | 2274 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 39,450 psi | 67% | 2365 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 49,835 psi | 85% | 2428 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,568 psi | 71% | 2343 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,594 psi | 64% | 2316 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 41,365 psi | 70% | 2395 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 48,124 psi | 82% | 2434 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,912 psi | 63% | 2313 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 28,413 psi | 48% | 2169 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,579 psi | 62% | 2287 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 38,392 psi | 65% | 2362 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,063 psi | 44% | 2175 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,512 psi | 76% | 2457 fps | 95.5% |
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 75 powders for 7 mm Exp. Rem. loaded with the .284 | 170gr | Sierra RN Prohunter. Alliant Reloder-26 delivers the highest muzzle velocity at 2,720 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,720 fps. Accurate 3100 gives the best case fill at 100 %, and 75 of the 75 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Norma MRP, Alliant Reloder-16 rank at the top here: for 7 mm Exp. Rem. with the .284 | 170gr | Sierra RN Prohunter 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.