Load Specifications
Load data in caliber .375 R Hoelderlin with .375 | 270gr | Brenneke TOG bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and Alliant Reloder-17.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 44,759 psi | 86% | 2379 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 45,876 psi | 88% | 2434 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 44,483 psi | 85% | 2431 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 46,760 psi | 90% | 2487 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 47,152 psi | 90% | 2507 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,308 psi | 81% | 2497 fps | 96.8% |
| ADI AR 2206H | <<locked>> | 88% | 46,717 psi | 89% | 2493 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 92% | 44,701 psi | 86% | 2441 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 46,224 psi | 89% | 2454 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 86% | 45,150 psi | 86% | 2448 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 47,152 psi | 90% | 2543 fps | 99.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 45,469 psi | 87% | 2569 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 46,456 psi | 89% | 2507 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 90% | 44,338 psi | 85% | 2474 fps | 97.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,149 psi | 83% | 2503 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 98% | 46,383 psi | 89% | 2595 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 45,730 psi | 88% | 2497 fps | 97.6% |
| Bofors RP3 | <<locked>> | 94% | 46,093 psi | 88% | 2513 fps | 99.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 45,759 psi | 88% | 2405 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 86% | 44,208 psi | 85% | 2474 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 84% | 45,571 psi | 87% | 2549 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 82% | 46,499 psi | 89% | 2457 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 47,239 psi | 90% | 2480 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 44,744 psi | 86% | 2470 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 88% | 47,108 psi | 90% | 2503 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,407 psi | 75% | 2402 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 45,034 psi | 86% | 2520 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,389 psi | 66% | 1522 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 45,440 psi | 87% | 2461 fps | 98.9% |
| IMR 3031 | <<locked>> | 88% | 45,745 psi | 88% | 2493 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 46,949 psi | 90% | 2470 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,901 psi | 78% | 2451 fps | 96.5% |
| IMR 4895 | <<locked>> | 90% | 45,382 psi | 87% | 2503 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 86% | 46,224 psi | 89% | 2454 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 82% | 45,513 psi | 87% | 2438 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 88% | 45,034 psi | 86% | 2470 fps | 99.9% |
| Lovex S060 | <<locked>> | 86% | 44,628 psi | 85% | 2388 fps | 98.3% |
| Lovex S062 | <<locked>> | 92% | 46,514 psi | 89% | 2474 fps | 99.5% |
| Lovex S065 | <<locked>> | 98% | 45,440 psi | 87% | 2454 fps | 95.9% |
| Norma 201 | <<locked>> | 88% | 45,745 psi | 88% | 2448 fps | 99.4% |
| Norma 202 | <<locked>> | 88% | 45,788 psi | 88% | 2457 fps | 100% |
| Norma 203B | <<locked>> | 92% | 46,441 psi | 89% | 2513 fps | 98.8% |
| Norma URPᴾ | <<locked>> | 100% | 43,033 psi | 82% | 2497 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 92% | 46,412 psi | 89% | 2530 fps | 98.6% |
| Ramshot TAC | <<locked>> | 86% | 46,412 psi | 89% | 2457 fps | 96.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 45,281 psi | 87% | 2477 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 47,239 psi | 90% | 2454 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,766 psi | 67% | 1562 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 45,905 psi | 88% | 2444 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 46,296 psi | 89% | 2572 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 46,456 psi | 89% | 2605 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,569 psi | 82% | 2516 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 86% | 47,050 psi | 90% | 2444 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 45,934 psi | 88% | 2444 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 96% | 45,992 psi | 88% | 2503 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 45,440 psi | 87% | 2454 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 45,034 psi | 86% | 2470 fps | 99.9% |
| Shooters World Precision | <<locked>> | 92% | 46,514 psi | 89% | 2474 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 44,744 psi | 86% | 2510 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 47,166 psi | 90% | 2480 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 45,049 psi | 86% | 2464 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 44,976 psi | 86% | 2365 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 47,166 psi | 90% | 2405 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 46,702 psi | 89% | 2484 fps | 99.6% |
| Somchem S335 | <<locked>> | 88% | 46,992 psi | 90% | 2408 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 46,717 psi | 89% | 2477 fps | 98.6% |
| Somchem S355 | <<locked>> | 96% | 47,065 psi | 90% | 2507 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,130 psi | 73% | 2444 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 82% | 45,020 psi | 86% | 2343 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 44,962 psi | 86% | 2359 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 44,817 psi | 86% | 2428 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 46,021 psi | 88% | 2438 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 45,179 psi | 87% | 2448 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,339 psi | 87% | 2493 fps | 97.2% |
| Vihtavuori N530 | <<locked>> | 86% | 46,267 psi | 89% | 2451 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 92% | 47,224 psi | 90% | 2477 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,251 psi | 85% | 2500 fps | 96.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,746 psi | 90% | 2490 fps | 99.1% |
| Winchester 748 | <<locked>> | 86% | 45,049 psi | 86% | 2490 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 47,181 psi | 90% | 2513 fps | 99.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 39,537 psi | 76% | 2297 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 42,757 psi | 82% | 2388 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 32,024 psi | 61% | 2218 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,145 psi | 73% | 2346 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 30,298 psi | 58% | 2198 fps | 98.7% |
| Accurate 4350 | <<locked>> | 96% | 36,811 psi | 71% | 2395 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 36,303 psi | 70% | 2300 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 35,143 psi | 67% | 2260 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,276 psi | 73% | 2316 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 80% | 36,869 psi | 71% | 2320 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,034 psi | 84% | 2490 fps | 98.8% |
| Alliant Power Pro 2000-MR | 60.9 gr | 84% | 37,318 psi | 71% | 2405 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,776 psi | 57% | 2182 fps | 95.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,505 psi | 66% | 2283 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 96% | 38,392 psi | 74% | 2408 fps | 95.4% |
| Alliant Reloder-17 | 62.8 gr | 88% | 33,591 psi | 64% | 2333 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 37,507 psi | 72% | 2343 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 28,979 psi | 56% | 2175 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,495 psi | 78% | 2316 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,187 psi | 69% | 2329 fps | 98.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,668 psi | 76% | 2441 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 80% | 43,700 psi | 84% | 2415 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,048 psi | 84% | 2431 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 39,392 psi | 75% | 2375 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 36,506 psi | 70% | 2310 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,764 psi | 63% | 2260 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,532 psi | 62% | 2274 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,483 psi | 49% | 1358 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,201 psi | 67% | 2270 fps | 96.6% |
| IMR 3031 | <<locked>> | 80% | 35,302 psi | 68% | 2320 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,490 psi | 66% | 2241 fps | 95.2% |
| IMR 4831 | <<locked>> | 98% | 38,261 psi | 73% | 2402 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 32,996 psi | 63% | 2264 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 38,276 psi | 73% | 2316 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 80% | 42,612 psi | 82% | 2392 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 34,447 psi | 66% | 2283 fps | 98.8% |
| Lovex S060 | <<locked>> | 80% | 37,231 psi | 71% | 2251 fps | 96.7% |
| Lovex S062 | <<locked>> | 80% | 32,039 psi | 61% | 2201 fps | 96.6% |
| Lovex S065 | <<locked>> | 96% | 42,830 psi | 82% | 2408 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 35,607 psi | 68% | 2264 fps | 97.6% |
| Norma 202 | <<locked>> | 80% | 35,520 psi | 68% | 2277 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 33,895 psi | 65% | 2274 fps | 95.7% |
| Norma URP | <<locked>> | 96% | 37,942 psi | 73% | 2402 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 82% | 33,344 psi | 64% | 2277 fps | 95% |
| Ramshot TAC | <<locked>> | 84% | 43,439 psi | 83% | 2408 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,014 psi | 71% | 2326 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,539 psi | 80% | 2359 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,759 psi | 49% | 1394 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,033 psi | 82% | 2395 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 35,462 psi | 68% | 2365 fps | 95.5% |
| ReloadSwiss RS 60 | 57.1 gr | 80% | 27,746 psi | 53% | 2188 fps | 95.5% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 39,682 psi | 76% | 2461 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 39,378 psi | 75% | 2313 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 33,982 psi | 65% | 2221 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 84% | 31,096 psi | 60% | 2221 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 42,830 psi | 82% | 2408 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,447 psi | 66% | 2283 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 32,039 psi | 61% | 2201 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 34,737 psi | 67% | 2316 fps | 95.7% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 41,205 psi | 79% | 2379 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,867 psi | 67% | 2270 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,492 psi | 72% | 2238 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,647 psi | 59% | 2119 fps | 99.1% |
| Somchem S321 | <<locked>> | 80% | 40,930 psi | 78% | 2388 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 36,796 psi | 70% | 2241 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 35,737 psi | 68% | 2283 fps | 96.1% |
| Somchem S355 | <<locked>> | 84% | 32,372 psi | 62% | 2231 fps | 95.7% |
| Somchem S365 | <<locked>> | 92% | 29,791 psi | 57% | 2251 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 42,554 psi | 82% | 2306 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,536 psi | 72% | 2241 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,692 psi | 63% | 2221 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,591 psi | 64% | 2221 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 80% | 26,992 psi | 52% | 2087 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 96% | 39,972 psi | 77% | 2402 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 38,116 psi | 73% | 2310 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 80% | 32,285 psi | 62% | 2211 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 96% | 38,899 psi | 75% | 2405 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,794 psi | 65% | 2247 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 36,912 psi | 71% | 2346 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,924 psi | 65% | 2274 fps | 96.4% |
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 80 powders for .375 R Hoelderlin loaded with the .375 | 270gr | Brenneke TOG. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,605 fps; across all powders the maximum-charge window runs from 1,522 fps to 2,605 fps. Accurate 4350 gives the best case fill at 100 %, and 80 of the 80 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (360 MPa), the top charges use 66–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .375 R Hoelderlin with the .375 | 270gr | Brenneke TOG 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.