Load Specifications
Load data in caliber .375 Hoelderlin with .375 | 270gr | NorthFork Bonded Core bullet and 85 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 ReloadSwiss RS 52.
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>> | 86% | 47,036 psi | 85% | 2408 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 48,240 psi | 88% | 2464 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 46,586 psi | 85% | 2457 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 49,240 psi | 89% | 2516 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 49,603 psi | 90% | 2536 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 41,655 psi | 76% | 2480 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 90% | 48,892 psi | 89% | 2520 fps | 99% |
| ADI AR 2208 | <<locked>> | 94% | 46,992 psi | 85% | 2470 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 88% | 48,573 psi | 88% | 2487 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 88% | 47,587 psi | 86% | 2474 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 49,545 psi | 90% | 2572 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 47,921 psi | 87% | 2605 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 48,646 psi | 88% | 2533 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 82% | 47,369 psi | 86% | 2418 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 49,545 psi | 90% | 2549 fps | 98.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 42,699 psi | 77% | 2487 fps | 96.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,805 psi | 89% | 2628 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 49,458 psi | 90% | 2402 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 48,124 psi | 87% | 2526 fps | 98% |
| Bofors RP3 | <<locked>> | 96% | 48,646 psi | 88% | 2546 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 47,993 psi | 87% | 2434 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 88% | 46,760 psi | 85% | 2510 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 86% | 48,153 psi | 87% | 2585 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 84% | 49,139 psi | 89% | 2490 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 46,514 psi | 84% | 2464 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 47,166 psi | 86% | 2503 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 90% | 49,298 psi | 89% | 2530 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,914 psi | 71% | 2385 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 47,413 psi | 86% | 2552 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,287 psi | 62% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 47,616 psi | 86% | 2487 fps | 99.1% |
| IMR 3031 | <<locked>> | 90% | 48,153 psi | 87% | 2523 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 49,414 psi | 90% | 2500 fps | 98.7% |
| IMR 4198 | <<locked>> | 82% | 48,095 psi | 87% | 2382 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,190 psi | 73% | 2431 fps | 96.2% |
| IMR 4895 | <<locked>> | 92% | 47,776 psi | 87% | 2536 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 88% | 48,573 psi | 88% | 2487 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 84% | 48,080 psi | 87% | 2470 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 90% | 47,485 psi | 86% | 2503 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 49,777 psi | 90% | 2461 fps | 99% |
| Lovex S062 | <<locked>> | 94% | 48,631 psi | 88% | 2500 fps | 99.6% |
| Lovex S065ᴾ | <<locked>> | 100% | 47,688 psi | 87% | 2484 fps | 96.3% |
| Norma 201 | <<locked>> | 90% | 47,863 psi | 87% | 2474 fps | 99.6% |
| Norma 202 | <<locked>> | 90% | 48,182 psi | 87% | 2487 fps | 100% |
| Norma 203B | <<locked>> | 94% | 48,704 psi | 88% | 2539 fps | 99% |
| Norma URPᴾ | <<locked>> | 100% | 42,293 psi | 77% | 2477 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 94% | 48,689 psi | 88% | 2559 fps | 98.8% |
| Ramshot TAC | <<locked>> | 88% | 48,820 psi | 89% | 2490 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 47,601 psi | 86% | 2507 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 46,630 psi | 85% | 2438 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,679 psi | 63% | 1555 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 48,240 psi | 88% | 2474 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 48,834 psi | 89% | 2605 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 48,820 psi | 89% | 2638 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 41,901 psi | 76% | 2497 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 88% | 49,124 psi | 89% | 2467 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 48,341 psi | 88% | 2474 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 98% | 48,254 psi | 88% | 2533 fps | 99.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 47,688 psi | 87% | 2484 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 47,485 psi | 86% | 2503 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 48,631 psi | 88% | 2500 fps | 99.6% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 48,109 psi | 87% | 2441 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 47,210 psi | 86% | 2543 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 48,051 psi | 87% | 2431 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 49,763 psi | 90% | 2510 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 47,369 psi | 86% | 2493 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 47,297 psi | 86% | 2392 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 49,545 psi | 90% | 2431 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 49,356 psi | 90% | 2516 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 49,168 psi | 89% | 2434 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 49,240 psi | 89% | 2510 fps | 98.9% |
| Somchem S355 | <<locked>> | 98% | 49,356 psi | 90% | 2536 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,652 psi | 68% | 2428 fps | 98.5% |
| Vihtavuori N130 | <<locked>> | 84% | 47,297 psi | 86% | 2369 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 47,239 psi | 86% | 2388 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 46,963 psi | 85% | 2451 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 48,428 psi | 88% | 2467 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 47,471 psi | 86% | 2477 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,802 psi | 81% | 2480 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 88% | 48,747 psi | 88% | 2484 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 94% | 49,748 psi | 90% | 2507 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 43,540 psi | 79% | 2484 fps | 96.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,209 psi | 84% | 2474 fps | 98.9% |
| Winchester 748 | <<locked>> | 88% | 47,630 psi | 86% | 2526 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 49,763 psi | 90% | 2546 fps | 99.4% |
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% | 39,131 psi | 71% | 2287 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 42,250 psi | 77% | 2372 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 31,618 psi | 57% | 2205 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 37,449 psi | 68% | 2326 fps | 99.2% |
| Accurate 4064 | <<locked>> | 80% | 29,936 psi | 54% | 2188 fps | 98.5% |
| Accurate 4350 | <<locked>> | 96% | 36,230 psi | 66% | 2379 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 35,810 psi | 65% | 2283 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 36,898 psi | 67% | 2290 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,782 psi | 69% | 2300 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 36,463 psi | 66% | 2306 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,468 psi | 79% | 2474 fps | 98.7% |
| Alliant Power Pro 2000-MR | 61.5 gr | 86% | 39,291 psi | 71% | 2441 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,472 psi | 53% | 2169 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,483 psi | 81% | 2375 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 36,245 psi | 66% | 2316 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 37,913 psi | 69% | 2388 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 88% | 33,127 psi | 60% | 2316 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,267 psi | 84% | 2356 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 37,144 psi | 67% | 2329 fps | 95.2% |
| Bofors RP3 | <<locked>> | 82% | 30,574 psi | 55% | 2211 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,016 psi | 73% | 2300 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,563 psi | 65% | 2310 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,204 psi | 71% | 2425 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 80% | 43,105 psi | 78% | 2402 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 43,555 psi | 79% | 2418 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 38,812 psi | 70% | 2359 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 36,056 psi | 65% | 2297 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,445 psi | 59% | 2247 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,140 psi | 58% | 2257 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,498 psi | 46% | 1355 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,911 psi | 63% | 2257 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 34,722 psi | 63% | 2303 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,200 psi | 62% | 2228 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 45,353 psi | 82% | 2346 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 37,782 psi | 69% | 2385 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 32,561 psi | 59% | 2247 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 37,782 psi | 69% | 2300 fps | 98% |
| Lovex D073.5 | <<locked>> | 80% | 41,945 psi | 76% | 2375 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 33,968 psi | 62% | 2270 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 36,970 psi | 67% | 2241 fps | 96.5% |
| Lovex S062 | <<locked>> | 80% | 31,720 psi | 58% | 2188 fps | 96.3% |
| Lovex S065 | <<locked>> | 98% | 44,904 psi | 81% | 2438 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 35,288 psi | 64% | 2251 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 35,215 psi | 64% | 2267 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 33,446 psi | 61% | 2260 fps | 95.4% |
| Norma URP | <<locked>> | 96% | 37,449 psi | 68% | 2382 fps | 95% |
| Ramshot Big Game | <<locked>> | 84% | 35,157 psi | 64% | 2313 fps | 95.6% |
| Ramshot TAC | <<locked>> | 84% | 42,917 psi | 78% | 2392 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,564 psi | 66% | 2313 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,147 psi | 75% | 2346 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,744 psi | 47% | 1388 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,525 psi | 77% | 2382 fps | 99.6% |
| ReloadSwiss RS 52 | 56.9 gr | 82% | 35,012 psi | 64% | 2349 fps | 95.2% |
| ReloadSwiss RS 60 | 56.4 gr | 80% | 27,441 psi | 50% | 2169 fps | 95.1% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 39,204 psi | 71% | 2444 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 38,783 psi | 70% | 2297 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 33,504 psi | 61% | 2205 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 84% | 30,661 psi | 56% | 2205 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 44,904 psi | 81% | 2438 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,968 psi | 62% | 2270 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 31,720 psi | 58% | 2188 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,831 psi | 81% | 2392 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 34,243 psi | 62% | 2300 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,092 psi | 82% | 2388 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 40,640 psi | 74% | 2362 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,447 psi | 63% | 2257 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,970 psi | 67% | 2224 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,197 psi | 55% | 2103 fps | 98.9% |
| Somchem S321 | <<locked>> | 80% | 40,277 psi | 73% | 2369 fps | 98.7% |
| Somchem S335 | <<locked>> | 80% | 36,477 psi | 66% | 2228 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 35,186 psi | 64% | 2264 fps | 95.8% |
| Somchem S355 | <<locked>> | 84% | 31,937 psi | 58% | 2218 fps | 95.4% |
| Somchem S365 | <<locked>> | 92% | 29,501 psi | 54% | 2238 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 42,018 psi | 76% | 2293 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,970 psi | 67% | 2228 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,155 psi | 58% | 2205 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,098 psi | 60% | 2208 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 28,456 psi | 52% | 2119 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 96% | 39,494 psi | 72% | 2385 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 37,623 psi | 68% | 2297 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 31,865 psi | 58% | 2195 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 96% | 38,377 psi | 70% | 2388 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,286 psi | 60% | 2228 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 36,274 psi | 66% | 2329 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,359 psi | 61% | 2254 fps | 96% |
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 85 powders for .375 Hoelderlin loaded with the .375 | 270gr | NorthFork Bonded Core. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,638 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,638 fps. Accurate 4350 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 62–90 %, 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, Alliant Reloder-17 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, ReloadSwiss RS 52 rank at the top here: for .375 Hoelderlin with the .375 | 270gr | NorthFork Bonded Core 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.