Load Specifications
Load data in caliber .375 R Hoelderlin with .375 | 270gr | Hornady SP bullet and 79 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% | 44,991 psi | 86% | 2385 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 45,948 psi | 88% | 2438 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 44,541 psi | 85% | 2434 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 46,818 psi | 90% | 2487 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 44,382 psi | 85% | 2467 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,540 psi | 81% | 2500 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 88% | 46,775 psi | 90% | 2493 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 92% | 44,889 psi | 86% | 2444 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 46,224 psi | 89% | 2454 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 86% | 45,237 psi | 87% | 2448 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 47,166 psi | 90% | 2543 fps | 99.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 45,672 psi | 87% | 2572 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 46,470 psi | 89% | 2507 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 90% | 44,396 psi | 85% | 2474 fps | 98% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,337 psi | 83% | 2510 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 98% | 46,557 psi | 89% | 2598 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 45,977 psi | 88% | 2500 fps | 97.7% |
| Bofors RP3 | <<locked>> | 94% | 46,340 psi | 89% | 2516 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 45,788 psi | 88% | 2405 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 86% | 44,222 psi | 85% | 2477 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 84% | 45,585 psi | 87% | 2549 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 82% | 46,528 psi | 89% | 2457 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 44,976 psi | 86% | 2474 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 88% | 47,137 psi | 90% | 2503 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,436 psi | 76% | 2402 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 45,237 psi | 87% | 2526 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,519 psi | 66% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 45,513 psi | 87% | 2461 fps | 98.9% |
| IMR 3031 | <<locked>> | 88% | 46,035 psi | 88% | 2500 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 47,195 psi | 90% | 2474 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,930 psi | 78% | 2451 fps | 96.5% |
| IMR 4895 | <<locked>> | 90% | 45,440 psi | 87% | 2503 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 86% | 46,224 psi | 89% | 2454 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 82% | 45,745 psi | 88% | 2441 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 88% | 45,063 psi | 86% | 2474 fps | 99.9% |
| Lovex S060 | <<locked>> | 86% | 44,701 psi | 86% | 2388 fps | 98.4% |
| Lovex S062 | <<locked>> | 92% | 46,499 psi | 89% | 2474 fps | 99.5% |
| Lovex S065 | <<locked>> | 98% | 45,658 psi | 87% | 2457 fps | 96% |
| Norma 201 | <<locked>> | 88% | 45,745 psi | 88% | 2448 fps | 99.4% |
| Norma 202 | <<locked>> | 88% | 45,847 psi | 88% | 2457 fps | 100% |
| Norma 203B | <<locked>> | 92% | 46,499 psi | 89% | 2513 fps | 98.8% |
| Norma URPᴾ | <<locked>> | 100% | 43,018 psi | 82% | 2497 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 92% | 46,441 psi | 89% | 2533 fps | 98.6% |
| Ramshot TAC | <<locked>> | 86% | 46,456 psi | 89% | 2457 fps | 96.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 45,266 psi | 87% | 2477 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 82% | 44,411 psi | 85% | 2408 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,679 psi | 66% | 1562 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 45,948 psi | 88% | 2444 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 46,586 psi | 89% | 2575 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 46,441 psi | 89% | 2608 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,540 psi | 81% | 2516 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 86% | 47,065 psi | 90% | 2444 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 45,992 psi | 88% | 2444 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 96% | 45,992 psi | 88% | 2503 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 45,658 psi | 87% | 2457 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 88% | 45,063 psi | 86% | 2474 fps | 99.9% |
| Shooters World Precision | <<locked>> | 92% | 46,499 psi | 89% | 2474 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 44,976 psi | 86% | 2513 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 44,208 psi | 85% | 2431 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 45,063 psi | 86% | 2464 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 45,005 psi | 86% | 2365 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 47,239 psi | 90% | 2405 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 46,746 psi | 90% | 2484 fps | 99.6% |
| Somchem S335 | <<locked>> | 88% | 47,050 psi | 90% | 2411 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 46,963 psi | 90% | 2484 fps | 98.7% |
| Somchem S355 | <<locked>> | 96% | 47,065 psi | 90% | 2510 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,305 psi | 73% | 2451 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 82% | 45,281 psi | 87% | 2349 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 44,976 psi | 86% | 2362 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 44,889 psi | 86% | 2428 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 46,224 psi | 89% | 2441 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 45,223 psi | 87% | 2451 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,527 psi | 87% | 2500 fps | 97.2% |
| Vihtavuori N530 | <<locked>> | 86% | 46,528 psi | 89% | 2454 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 90% | 44,527 psi | 85% | 2438 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,222 psi | 85% | 2500 fps | 96.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,891 psi | 90% | 2490 fps | 99.1% |
| Winchester 748 | <<locked>> | 86% | 45,252 psi | 87% | 2493 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 44,251 psi | 85% | 2467 fps | 98.8% |
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% | 39,784 psi | 76% | 2303 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 43,018 psi | 82% | 2392 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 32,068 psi | 61% | 2218 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,189 psi | 73% | 2346 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 30,371 psi | 58% | 2201 fps | 98.7% |
| Accurate 4350 | <<locked>> | 96% | 36,869 psi | 71% | 2395 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 36,332 psi | 70% | 2300 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 35,201 psi | 67% | 2260 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,334 psi | 73% | 2316 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 80% | 37,115 psi | 71% | 2323 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,121 psi | 85% | 2490 fps | 98.8% |
| Alliant Power Pro 2000-MR | 61 gr | 84% | 37,362 psi | 72% | 2408 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,820 psi | 57% | 2182 fps | 95.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,577 psi | 66% | 2287 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 96% | 38,421 psi | 74% | 2408 fps | 95.5% |
| Alliant Reloder-17 | 62.9 gr | 88% | 33,620 psi | 64% | 2336 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 37,550 psi | 72% | 2346 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 29,037 psi | 56% | 2178 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,538 psi | 78% | 2316 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,216 psi | 69% | 2329 fps | 98.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,856 psi | 76% | 2444 fps | 96.9% |
| Hodgdon H322 | <<locked>> | 80% | 43,714 psi | 84% | 2415 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 39,436 psi | 76% | 2375 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 36,579 psi | 70% | 2313 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,909 psi | 63% | 2267 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,706 psi | 63% | 2277 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,614 psi | 49% | 1362 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,404 psi | 68% | 2274 fps | 96.7% |
| IMR 3031 | <<locked>> | 80% | 35,346 psi | 68% | 2320 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,693 psi | 66% | 2244 fps | 95.3% |
| IMR 4831 | <<locked>> | 96% | 36,027 psi | 69% | 2356 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 33,069 psi | 63% | 2264 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 38,334 psi | 73% | 2316 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 80% | 42,685 psi | 82% | 2392 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 34,461 psi | 66% | 2283 fps | 98.8% |
| Lovex S060 | <<locked>> | 80% | 37,434 psi | 72% | 2257 fps | 96.7% |
| Lovex S062 | <<locked>> | 80% | 32,227 psi | 62% | 2208 fps | 96.6% |
| Lovex S065 | <<locked>> | 96% | 42,859 psi | 82% | 2411 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 35,665 psi | 68% | 2264 fps | 97.6% |
| Norma 202 | <<locked>> | 80% | 35,578 psi | 68% | 2280 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 33,910 psi | 65% | 2277 fps | 95.7% |
| Norma URP | <<locked>> | 96% | 37,942 psi | 73% | 2398 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 82% | 33,388 psi | 64% | 2280 fps | 95.1% |
| Ramshot TAC | <<locked>> | 84% | 43,482 psi | 83% | 2408 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,231 psi | 71% | 2329 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,568 psi | 80% | 2359 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,686 psi | 49% | 1394 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,047 psi | 82% | 2398 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 35,476 psi | 68% | 2365 fps | 95.5% |
| ReloadSwiss RS 60 | 57.2 gr | 80% | 27,775 psi | 53% | 2188 fps | 95.5% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 39,842 psi | 76% | 2464 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 39,407 psi | 75% | 2313 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 34,069 psi | 65% | 2224 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 84% | 31,140 psi | 60% | 2221 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 42,859 psi | 82% | 2411 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,461 psi | 66% | 2283 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 32,227 psi | 62% | 2208 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 34,795 psi | 67% | 2316 fps | 95.7% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 41,263 psi | 79% | 2379 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,940 psi | 67% | 2274 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,507 psi | 72% | 2241 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,676 psi | 59% | 2119 fps | 99.1% |
| Somchem S321 | <<locked>> | 80% | 40,959 psi | 78% | 2388 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 36,825 psi | 71% | 2241 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 35,795 psi | 69% | 2283 fps | 96.1% |
| Somchem S355 | <<locked>> | 82% | 30,516 psi | 58% | 2188 fps | 95% |
| Somchem S365 | <<locked>> | 92% | 29,936 psi | 57% | 2254 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 42,612 psi | 82% | 2306 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,565 psi | 72% | 2241 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,779 psi | 63% | 2221 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,620 psi | 64% | 2221 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 27,035 psi | 52% | 2087 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 94% | 37,681 psi | 72% | 2356 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 38,159 psi | 73% | 2310 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 80% | 32,300 psi | 62% | 2211 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 96% | 39,088 psi | 75% | 2408 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,808 psi | 65% | 2247 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 36,985 psi | 71% | 2349 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,968 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 79 powders for .375 R Hoelderlin loaded with the .375 | 270gr | Hornady SP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,608 fps; across all powders the maximum-charge window runs from 1,526 fps to 2,608 fps. Accurate 4350 gives the best case fill at 100 %, and 79 of the 79 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 | 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.