Load Specifications
Load data in caliber 7 mm B.R. Rem. with .284 | 139gr | Hornady SP bullet and 55 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H335, Hodgdon H322 and Shooters World AR Plus.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 50,720 psi | 86% | 2382 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 49,864 psi | 85% | 2451 fps | 100% |
| Accurate 2460 | <<locked>> | 98% | 52,272 psi | 89% | 2510 fps | 99.1% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,087 psi | 65% | 2352 fps | 99.5% |
| Accurate 2520ᴾ | <<locked>> | 100% | 48,965 psi | 83% | 2507 fps | 98.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 35,491 psi | 60% | 2320 fps | 97% |
| Accurate LT-30 | <<locked>> | 92% | 51,576 psi | 88% | 2395 fps | 99.7% |
| Accurate LT-32 | <<locked>> | 92% | 52,054 psi | 89% | 2402 fps | 98.7% |
| ADI AR 2207 | <<locked>> | 90% | 50,618 psi | 86% | 2425 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 52,301 psi | 89% | 2530 fps | 99.8% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 49,313 psi | 84% | 2467 fps | 96.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 46,470 psi | 79% | 2484 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 52,634 psi | 90% | 2598 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 96% | 50,807 psi | 86% | 2477 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 52,620 psi | 90% | 2438 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 52,692 psi | 90% | 2431 fps | 99.9% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 53,026 psi | 90% | 2474 fps | 98% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 46,412 psi | 79% | 2487 fps | 97% |
| Hodgdon H322 | <<locked>> | 96% | 50,096 psi | 85% | 2500 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 96% | 51,285 psi | 87% | 2523 fps | 99.2% |
| Hodgdon H4198 | <<locked>> | 88% | 50,241 psi | 86% | 2392 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,039 psi | 55% | 1450 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 43,758 psi | 74% | 2464 fps | 99.5% |
| IMR 4198 | <<locked>> | 96% | 52,721 psi | 90% | 2451 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 50,749 psi | 86% | 2356 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 49,313 psi | 84% | 2467 fps | 96.8% |
| Lovex D073.4 | <<locked>> | 90% | 50,038 psi | 85% | 2484 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 98% | 52,692 psi | 90% | 2516 fps | 98.3% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 42,685 psi | 73% | 2425 fps | 97.4% |
| Lovex S053 | <<locked>> | 86% | 51,880 psi | 88% | 2343 fps | 100% |
| Norma 200 | <<locked>> | 92% | 51,416 psi | 88% | 2464 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 45,136 psi | 77% | 2408 fps | 96% |
| Norma 202ᴾ | <<locked>> | 100% | 44,976 psi | 77% | 2431 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,923 psi | 54% | 1486 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 50,183 psi | 85% | 2388 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 53,098 psi | 90% | 2520 fps | 98.7% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 49,414 psi | 84% | 2461 fps | 98.8% |
| Shooters World AR Plus | <<locked>> | 90% | 50,038 psi | 85% | 2484 fps | 98.4% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 42,685 psi | 73% | 2425 fps | 97.4% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 51,169 psi | 87% | 2448 fps | 96.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 53,098 psi | 90% | 2215 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 52,765 psi | 90% | 2533 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 52,141 psi | 89% | 2487 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 48,660 psi | 83% | 2392 fps | 98.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,943 psi | 66% | 2257 fps | 97.9% |
| Somchem S321 | <<locked>> | 98% | 50,604 psi | 86% | 2513 fps | 97.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 46,920 psi | 80% | 2392 fps | 99.2% |
| Vihtavuori N120 | <<locked>> | 90% | 50,749 psi | 86% | 2382 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 51,967 psi | 88% | 2434 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 47,688 psi | 81% | 2392 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 39,639 psi | 67% | 2356 fps | 99.5% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 42,380 psi | 72% | 2365 fps | 98.2% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 50,314 psi | 86% | 2474 fps | 97% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 40,988 psi | 70% | 2359 fps | 97.4% |
| Winchester 748ᴾ | <<locked>> | 100% | 47,747 psi | 81% | 2500 fps | 97.4% |
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 1680 | <<locked>> | 80% | 41,524 psi | 71% | 2254 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 27,093 psi | 46% | 2044 fps | 96.2% |
| Accurate 2460 | <<locked>> | 86% | 35,085 psi | 60% | 2238 fps | 95.8% |
| Accurate 2495 | <<locked>> | 86% | 23,873 psi | 41% | 2044 fps | 95.4% |
| Accurate 2520 | <<locked>> | 90% | 34,389 psi | 59% | 2264 fps | 95.1% |
| Accurate 4064 | <<locked>> | 96% | 31,111 psi | 53% | 2228 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 35,723 psi | 61% | 2142 fps | 97.4% |
| Accurate LT-32 | <<locked>> | 80% | 36,129 psi | 62% | 2146 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 37,217 psi | 63% | 2231 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 32,982 psi | 56% | 2201 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 96% | 43,947 psi | 75% | 2385 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 24,860 psi | 42% | 2047 fps | 97.7% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 43,743 psi | 74% | 2461 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,111 psi | 53% | 2146 fps | 98.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 38,783 psi | 66% | 2234 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,765 psi | 57% | 2133 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 90% | 39,552 psi | 67% | 2264 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 96% | 40,495 psi | 69% | 2388 fps | 95.5% |
| Hodgdon H322 | 23.8 gr | 80% | 30,284 psi | 52% | 2139 fps | 95.4% |
| Hodgdon H335 | 26.1 gr | 82% | 32,445 psi | 55% | 2195 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 39,407 psi | 67% | 2221 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,612 psi | 40% | 1296 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 28,587 psi | 49% | 2152 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 33,185 psi | 56% | 2142 fps | 99.5% |
| IMR 4227 | <<locked>> | 80% | 44,947 psi | 77% | 2280 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 43,947 psi | 75% | 2385 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 35,201 psi | 60% | 2238 fps | 95% |
| Lovex D073.5 | <<locked>> | 90% | 39,726 psi | 68% | 2323 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 94% | 34,983 psi | 60% | 2287 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 43,743 psi | 74% | 2234 fps | 100% |
| Norma 200 | <<locked>> | 80% | 35,447 psi | 60% | 2218 fps | 99.7% |
| Norma 201 | <<locked>> | 98% | 42,380 psi | 72% | 2362 fps | 95.3% |
| Norma 202 | <<locked>> | 90% | 32,677 psi | 56% | 2208 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,670 psi | 40% | 1329 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,135 psi | 75% | 2306 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 36,361 psi | 62% | 2251 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 88% | 34,780 psi | 59% | 2211 fps | 95.7% |
| Shooters World AR Plus | 25.5 gr | 80% | 35,201 psi | 60% | 2238 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 94% | 34,983 psi | 60% | 2287 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 44,483 psi | 76% | 2349 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,669 psi | 69% | 2060 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 33,025 psi | 56% | 2201 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,923 psi | 54% | 2149 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 34,040 psi | 58% | 2146 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 30,821 psi | 52% | 2096 fps | 95.5% |
| Somchem S321 | <<locked>> | 92% | 40,973 psi | 70% | 2362 fps | 95.2% |
| Somchem S335 | <<locked>> | 86% | 30,763 psi | 52% | 2103 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 37,405 psi | 64% | 2195 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,182 psi | 51% | 2077 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 80% | 26,281 psi | 45% | 1991 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 84% | 24,439 psi | 42% | 2021 fps | 95% |
| Vihtavuori N140 | <<locked>> | 90% | 31,372 psi | 53% | 2156 fps | 95% |
| Vihtavuori N530 | <<locked>> | 94% | 41,350 psi | 70% | 2336 fps | 95% |
| Vihtavuori N540 | <<locked>> | 94% | 34,026 psi | 58% | 2228 fps | 95.4% |
| Winchester 748 | <<locked>> | 94% | 39,595 psi | 67% | 2362 fps | 95.4% |
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 55 powders for 7 mm B.R. Rem. loaded with the .284 | 139gr | Hornady SP. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,598 fps; across all powders the maximum-charge window runs from 1,450 fps to 2,598 fps. Accurate 2015 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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. Hodgdon H335, Hodgdon H322, Shooters World AR Plus rank at the top here: for 7 mm B.R. Rem. with the .284 | 139gr | Hornady SP 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.