Load Specifications
Load data in caliber 7 mm B.R. Rem. with .284 | 145gr | Speer Boat-Tail bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Hodgdon H335 and Somchem S321.
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"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 52,881 psi | 90% | 2369 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 53,026 psi | 90% | 2448 fps | 100% |
| Accurate 2200 | <<locked>> | 90% | 52,388 psi | 89% | 2474 fps | 95.8% |
| Accurate 2230 | <<locked>> | 90% | 52,112 psi | 89% | 2477 fps | 96.1% |
| Accurate 2460 | <<locked>> | 96% | 52,112 psi | 89% | 2464 fps | 99.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 41,162 psi | 70% | 2356 fps | 99.9% |
| Accurate 2520ᴾ | <<locked>> | 100% | 52,228 psi | 89% | 2507 fps | 99.3% |
| Accurate 4064ᴾ | <<locked>> | 100% | 38,276 psi | 65% | 2329 fps | 98.2% |
| Accurate LT-30 | <<locked>> | 90% | 50,517 psi | 86% | 2339 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 90% | 51,024 psi | 87% | 2349 fps | 99% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 48,936 psi | 83% | 2448 fps | 96.1% |
| ADI AR 2207 | <<locked>> | 88% | 50,502 psi | 86% | 2375 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 51,416 psi | 88% | 2474 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 52,112 psi | 89% | 2467 fps | 97.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 48,979 psi | 83% | 2470 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 52,576 psi | 90% | 2556 fps | 97.7% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 49,298 psi | 84% | 2464 fps | 96.9% |
| Alliant Reloder-10x | <<locked>> | 94% | 50,647 psi | 86% | 2428 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 51,764 psi | 88% | 2382 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 51,735 psi | 88% | 2379 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 98% | 52,591 psi | 90% | 2428 fps | 98.5% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 49,313 psi | 84% | 2490 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 98% | 52,156 psi | 89% | 2559 fps | 96% |
| Hodgdon H322 | <<locked>> | 96% | 53,127 psi | 90% | 2497 fps | 100% |
| Hodgdon H335 | <<locked>> | 94% | 50,459 psi | 86% | 2470 fps | 99.5% |
| Hodgdon H4198 | <<locked>> | 88% | 52,446 psi | 89% | 2379 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 49,095 psi | 84% | 2461 fps | 96.8% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 44,570 psi | 76% | 2428 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,576 psi | 55% | 1434 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 48,153 psi | 82% | 2421 fps | 96.4% |
| IMR 3031ᴾ | <<locked>> | 100% | 46,644 psi | 79% | 2467 fps | 99.9% |
| IMR 4198 | <<locked>> | 94% | 52,359 psi | 89% | 2402 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 52,504 psi | 89% | 2333 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 52,112 psi | 89% | 2467 fps | 97.9% |
| Lovex D073.4 | <<locked>> | 90% | 52,649 psi | 90% | 2477 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 96% | 51,866 psi | 88% | 2464 fps | 98.7% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 45,701 psi | 78% | 2431 fps | 98.5% |
| Lovex S053 | <<locked>> | 84% | 51,547 psi | 88% | 2290 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 51,155 psi | 87% | 2402 fps | 96.4% |
| Lovex S062ᴾ | <<locked>> | 100% | 42,177 psi | 72% | 2339 fps | 96.1% |
| Norma 200 | <<locked>> | 90% | 50,850 psi | 87% | 2411 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 47,892 psi | 82% | 2411 fps | 97.3% |
| Norma 202ᴾ | <<locked>> | 100% | 47,355 psi | 81% | 2425 fps | 99.2% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 51,372 psi | 87% | 2490 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 96% | 51,561 psi | 88% | 2434 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,518 psi | 55% | 1467 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 52,547 psi | 89% | 2369 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 52,794 psi | 90% | 2477 fps | 99.1% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 51,895 psi | 88% | 2454 fps | 99.5% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 44,817 psi | 76% | 2356 fps | 96.6% |
| Shooters World AR Plus | <<locked>> | 90% | 52,649 psi | 90% | 2477 fps | 99.2% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 45,701 psi | 78% | 2431 fps | 98.5% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 42,177 psi | 72% | 2339 fps | 96.1% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 50,198 psi | 85% | 2398 fps | 97.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 52,083 psi | 89% | 2159 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 51,967 psi | 88% | 2480 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 51,938 psi | 88% | 2441 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 51,488 psi | 88% | 2388 fps | 99.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,234 psi | 70% | 2260 fps | 98.9% |
| Somchem S321 | <<locked>> | 96% | 49,835 psi | 85% | 2464 fps | 97.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 49,661 psi | 85% | 2388 fps | 99.7% |
| Somchem S341ᴾ | <<locked>> | 100% | 49,705 psi | 85% | 2438 fps | 95.9% |
| Vihtavuori N120 | <<locked>> | 88% | 50,575 psi | 86% | 2329 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 51,111 psi | 87% | 2379 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 50,546 psi | 86% | 2385 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,453 psi | 72% | 2359 fps | 99.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 44,976 psi | 77% | 2369 fps | 99.1% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 52,707 psi | 90% | 2467 fps | 98% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,410 psi | 74% | 2362 fps | 98.5% |
| Winchester 748ᴾ | <<locked>> | 100% | 50,430 psi | 86% | 2503 fps | 98.5% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 46,746 psi | 80% | 2431 fps | 96.2% |
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% | 43,468 psi | 74% | 2241 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 28,514 psi | 49% | 2041 fps | 97.4% |
| Accurate 2200 | <<locked>> | 88% | 49,182 psi | 84% | 2428 fps | 95.1% |
| Accurate 2230 | <<locked>> | 88% | 48,834 psi | 83% | 2431 fps | 95.4% |
| Accurate 2460 | <<locked>> | 82% | 32,416 psi | 55% | 2146 fps | 95.6% |
| Accurate 2495 | <<locked>> | 82% | 22,510 psi | 38% | 1965 fps | 95.4% |
| Accurate 2520 | <<locked>> | 86% | 32,111 psi | 55% | 2178 fps | 95.1% |
| Accurate 4064 | <<locked>> | 92% | 29,573 psi | 50% | 2152 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 37,434 psi | 64% | 2139 fps | 98.4% |
| Accurate LT-32 | <<locked>> | 80% | 37,811 psi | 64% | 2142 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 98% | 45,977 psi | 78% | 2405 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 39,407 psi | 67% | 2221 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,780 psi | 59% | 2205 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 92% | 40,770 psi | 69% | 2293 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 26,310 psi | 45% | 2057 fps | 98.9% |
| Alliant Power Pro 1200-R | 26.6 gr | 88% | 40,625 psi | 69% | 2365 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 43,569 psi | 74% | 2375 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,011 psi | 56% | 2146 fps | 99.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,799 psi | 69% | 2228 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,389 psi | 60% | 2129 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 86% | 36,695 psi | 62% | 2175 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 92% | 37,594 psi | 64% | 2300 fps | 95.5% |
| Hodgdon CFE223 | <<locked>> | 96% | 48,573 psi | 83% | 2507 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 31,604 psi | 54% | 2136 fps | 96.7% |
| Hodgdon H335 | 25.8 gr | 80% | 31,836 psi | 54% | 2149 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 41,292 psi | 70% | 2215 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 96% | 43,381 psi | 74% | 2372 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 41,495 psi | 71% | 2375 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,786 psi | 40% | 1273 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 42,598 psi | 73% | 2333 fps | 95% |
| IMR 3031 | <<locked>> | 82% | 26,629 psi | 45% | 2067 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 34,969 psi | 60% | 2139 fps | 99.9% |
| IMR 4227 | <<locked>> | 80% | 46,630 psi | 79% | 2260 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 40,770 psi | 69% | 2293 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 37,275 psi | 63% | 2238 fps | 96.4% |
| Lovex D073.5 | <<locked>> | 86% | 37,014 psi | 63% | 2234 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 90% | 32,605 psi | 56% | 2201 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 45,963 psi | 78% | 2221 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 45,324 psi | 77% | 2316 fps | 95.1% |
| Lovex S062 | <<locked>> | 98% | 39,595 psi | 67% | 2293 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 37,173 psi | 63% | 2208 fps | 100% |
| Norma 201 | <<locked>> | 94% | 39,740 psi | 68% | 2280 fps | 95.4% |
| Norma 202 | <<locked>> | 86% | 30,777 psi | 52% | 2129 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 96% | 44,991 psi | 77% | 2395 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 94% | 48,109 psi | 82% | 2385 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,902 psi | 41% | 1309 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,383 psi | 79% | 2290 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 33,765 psi | 57% | 2162 fps | 95% |
| Rottweil R 901 | <<locked>> | 84% | 32,503 psi | 55% | 2126 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 96% | 39,958 psi | 68% | 2277 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 37,275 psi | 63% | 2238 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 32,605 psi | 56% | 2201 fps | 95.2% |
| Shooters World Precision | <<locked>> | 98% | 39,595 psi | 67% | 2293 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 41,104 psi | 70% | 2260 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,250 psi | 72% | 2037 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,853 psi | 59% | 2201 fps | 96.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,750 psi | 57% | 2149 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 31,531 psi | 54% | 2060 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 28,572 psi | 49% | 2014 fps | 95.4% |
| Somchem S321 | 28.6 gr | 88% | 38,145 psi | 65% | 2274 fps | 95.2% |
| Somchem S335 | <<locked>> | 82% | 28,718 psi | 49% | 2021 fps | 95.4% |
| Somchem S341 | <<locked>> | 98% | 46,760 psi | 80% | 2395 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 39,566 psi | 67% | 2185 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,923 psi | 54% | 2077 fps | 99% |
| Vihtavuori N133 | <<locked>> | 80% | 27,760 psi | 47% | 1995 fps | 96.9% |
| Vihtavuori N135 | <<locked>> | 80% | 23,061 psi | 39% | 1946 fps | 95% |
| Vihtavuori N140 | <<locked>> | 88% | 31,053 psi | 53% | 2113 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 92% | 40,828 psi | 70% | 2290 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 90% | 31,720 psi | 54% | 2146 fps | 95.3% |
| Winchester 748 | <<locked>> | 90% | 36,753 psi | 63% | 2274 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 98% | 43,540 psi | 74% | 2379 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 91 powders for 7 mm B.R. Rem. loaded with the .284 | 145gr | Speer Boat-Tail. Hodgdon CFE223 delivers the highest muzzle velocity at 2,559 fps; across all powders the maximum-charge window runs from 1,434 fps to 2,559 fps. Accurate 2015 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 145.0 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. Alliant Power Pro 1200-R, Hodgdon H335, Somchem S321 rank at the top here: for 7 mm B.R. Rem. with the .284 | 145gr | Speer Boat-Tail they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2208, Alliant Power Pro 2000-MR, Alliant Reloder- TS 15.5 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.