Load Specifications
Load data in caliber .375 R Hoelderlin with .375 | 270gr | Barnes TSX FB bullet and 77 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 52 and Hodgdon LEVERevolution.
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>> | 88% | 45,252 psi | 87% | 2362 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 46,572 psi | 89% | 2418 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 46,760 psi | 90% | 2444 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 47,195 psi | 90% | 2467 fps | 99.9% |
| Accurate 4064 | <<locked>> | 98% | 46,760 psi | 90% | 2480 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 47,021 psi | 90% | 2323 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 44,570 psi | 85% | 2425 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 96% | 45,556 psi | 87% | 2418 fps | 97.3% |
| ADI AR 2219 | <<locked>> | 82% | 45,905 psi | 88% | 2421 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 47,195 psi | 90% | 2438 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 90% | 45,339 psi | 87% | 2428 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 44,730 psi | 86% | 2470 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 46,557 psi | 89% | 2546 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 46,702 psi | 89% | 2480 fps | 99% |
| Alliant Reloder-10x | <<locked>> | 84% | 45,890 psi | 88% | 2375 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 44,831 psi | 86% | 2451 fps | 97.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 44,164 psi | 85% | 2513 fps | 98.1% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 45,542 psi | 87% | 2323 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 46,731 psi | 90% | 2474 fps | 97.2% |
| Bofors RP3 | <<locked>> | 98% | 46,311 psi | 89% | 2487 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 88% | 46,847 psi | 90% | 2388 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 90% | 44,947 psi | 86% | 2457 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 88% | 46,557 psi | 89% | 2530 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 84% | 44,686 psi | 86% | 2402 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 45,223 psi | 87% | 2421 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 45,179 psi | 87% | 2444 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 90% | 44,831 psi | 86% | 2434 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 45,788 psi | 88% | 2500 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,721 psi | 65% | 1483 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 46,224 psi | 89% | 2438 fps | 98.5% |
| IMR 3031 | <<locked>> | 92% | 46,137 psi | 88% | 2477 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 45,034 psi | 86% | 2405 fps | 97.4% |
| IMR 4198 | <<locked>> | 84% | 47,094 psi | 90% | 2346 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 45,890 psi | 88% | 2480 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 90% | 47,195 psi | 90% | 2438 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 86% | 46,369 psi | 89% | 2421 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 92% | 45,281 psi | 87% | 2451 fps | 99.8% |
| Lovex S060 | <<locked>> | 90% | 45,905 psi | 88% | 2372 fps | 98% |
| Lovex S062 | <<locked>> | 96% | 46,760 psi | 90% | 2448 fps | 99.2% |
| Norma 201 | <<locked>> | 92% | 46,180 psi | 88% | 2425 fps | 99.1% |
| Norma 202 | <<locked>> | 92% | 46,354 psi | 89% | 2438 fps | 100% |
| Norma 203B | <<locked>> | 96% | 46,760 psi | 90% | 2484 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 96% | 47,239 psi | 90% | 2507 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 90% | 46,108 psi | 88% | 2457 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 86% | 45,513 psi | 87% | 2392 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,808 psi | 65% | 1516 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 46,920 psi | 90% | 2428 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 46,876 psi | 90% | 2546 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 44,266 psi | 85% | 2530 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 88% | 44,512 psi | 85% | 2379 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 94% | 46,470 psi | 89% | 2421 fps | 99.1% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 45,992 psi | 88% | 2474 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 92% | 45,281 psi | 87% | 2451 fps | 99.8% |
| Shooters World Precision | <<locked>> | 96% | 46,760 psi | 90% | 2448 fps | 99.2% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 47,094 psi | 90% | 2398 fps | 98.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 46,180 psi | 88% | 2428 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 45,397 psi | 87% | 2487 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 46,818 psi | 90% | 2392 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 45,034 psi | 86% | 2408 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 45,847 psi | 88% | 2441 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 45,948 psi | 88% | 2346 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 45,107 psi | 86% | 2346 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 44,643 psi | 86% | 2421 fps | 99.1% |
| Somchem S335 | <<locked>> | 90% | 44,933 psi | 86% | 2349 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 44,672 psi | 86% | 2411 fps | 97.7% |
| Somchem S355ᴾ | <<locked>> | 100% | 47,210 psi | 90% | 2480 fps | 98.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 33,605 psi | 64% | 2313 fps | 96.6% |
| Vihtavuori N130 | <<locked>> | 86% | 46,238 psi | 89% | 2333 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 45,774 psi | 88% | 2343 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 44,962 psi | 86% | 2405 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 46,630 psi | 89% | 2418 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 45,629 psi | 87% | 2425 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 88% | 44,309 psi | 85% | 2388 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 94% | 45,078 psi | 86% | 2418 fps | 99.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,858 psi | 80% | 2365 fps | 97.4% |
| Winchester 748 | <<locked>> | 90% | 45,788 psi | 88% | 2474 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 92% | 45,063 psi | 86% | 2451 fps | 98.5% |
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% | 35,273 psi | 68% | 2201 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 37,753 psi | 72% | 2277 fps | 99.2% |
| Accurate 2495 | <<locked>> | 80% | 27,180 psi | 52% | 2100 fps | 99.3% |
| Accurate 2520 | <<locked>> | 80% | 33,214 psi | 64% | 2228 fps | 98.1% |
| Accurate 4064 | <<locked>> | 80% | 25,773 psi | 49% | 2077 fps | 96.7% |
| Accurate LT-30 | <<locked>> | 80% | 44,222 psi | 85% | 2283 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 34,505 psi | 66% | 2234 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 90% | 37,797 psi | 72% | 2283 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 42,815 psi | 82% | 2375 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,258 psi | 66% | 2205 fps | 96.5% |
| Alliant AR-Comp | <<locked>> | 80% | 32,474 psi | 62% | 2221 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,102 psi | 75% | 2372 fps | 97.4% |
| Alliant Power Pro 2000-MR | 60 gr | 90% | 40,828 psi | 78% | 2441 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 31,705 psi | 61% | 2205 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,364 psi | 77% | 2293 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 36,883 psi | 71% | 2306 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 94% | 36,260 psi | 69% | 2356 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,569 psi | 82% | 2277 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 40,872 psi | 78% | 2375 fps | 95.7% |
| Bofors RP3 | <<locked>> | 86% | 30,719 psi | 59% | 2201 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,709 psi | 70% | 2215 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,705 psi | 61% | 2211 fps | 96.4% |
| Hodgdon CFE223 | <<locked>> | 82% | 37,811 psi | 72% | 2369 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 39,088 psi | 75% | 2313 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 39,566 psi | 76% | 2329 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 94% | 42,395 psi | 81% | 2398 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 32,401 psi | 62% | 2198 fps | 95.1% |
| Hodgdon LEVERevolution | 54.9 gr | 84% | 32,996 psi | 63% | 2254 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,947 psi | 48% | 1322 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 33,620 psi | 64% | 2208 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 30,908 psi | 59% | 2208 fps | 99.4% |
| IMR 4064 | <<locked>> | 88% | 37,188 psi | 71% | 2267 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 41,843 psi | 80% | 2270 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 35,418 psi | 68% | 2290 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 34,258 psi | 66% | 2205 fps | 96.5% |
| Lovex D073.5 | <<locked>> | 80% | 37,637 psi | 72% | 2280 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 80% | 29,921 psi | 57% | 2169 fps | 97.1% |
| Lovex S060 | <<locked>> | 82% | 35,911 psi | 69% | 2195 fps | 95.5% |
| Lovex S062 | <<locked>> | 82% | 30,124 psi | 58% | 2136 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 31,473 psi | 60% | 2152 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 31,459 psi | 60% | 2172 fps | 98.1% |
| Norma 203B | <<locked>> | 86% | 33,953 psi | 65% | 2251 fps | 95% |
| Ramshot Big Game | <<locked>> | 88% | 36,071 psi | 69% | 2306 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 35,288 psi | 68% | 2264 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 37,362 psi | 72% | 2247 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,932 psi | 48% | 1355 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,609 psi | 74% | 2290 fps | 98.8% |
| ReloadSwiss RS 52 | 56.8 gr | 88% | 38,218 psi | 73% | 2392 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 29,849 psi | 57% | 2211 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 34,838 psi | 67% | 2205 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 29,921 psi | 57% | 2106 fps | 95% |
| Rottweil R 903 | <<locked>> | 90% | 32,880 psi | 63% | 2241 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,921 psi | 57% | 2169 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 30,124 psi | 58% | 2136 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 40,915 psi | 78% | 2300 fps | 97.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,250 psi | 83% | 2382 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 35,041 psi | 67% | 2290 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,133 psi | 79% | 2306 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 41,858 psi | 80% | 2356 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 35,259 psi | 68% | 2254 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,591 psi | 64% | 2136 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,137 psi | 52% | 2018 fps | 97.7% |
| Somchem S321 | <<locked>> | 80% | 36,260 psi | 69% | 2274 fps | 97.5% |
| Somchem S335 | <<locked>> | 80% | 32,808 psi | 63% | 2139 fps | 99% |
| Somchem S341 | <<locked>> | 84% | 36,274 psi | 69% | 2264 fps | 95.5% |
| Somchem S355 | <<locked>> | 90% | 34,403 psi | 66% | 2254 fps | 95.8% |
| Somchem S365 | <<locked>> | 98% | 31,647 psi | 61% | 2264 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 38,348 psi | 73% | 2215 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,562 psi | 64% | 2146 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 28,442 psi | 54% | 2113 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 29,762 psi | 57% | 2116 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 86% | 28,761 psi | 55% | 2110 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 34,040 psi | 65% | 2201 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 80% | 28,413 psi | 54% | 2100 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 34,432 psi | 66% | 2221 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 32,706 psi | 63% | 2231 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 84% | 34,360 psi | 66% | 2254 fps | 95.8% |
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 77 powders for .375 R Hoelderlin loaded with the .375 | 270gr | Barnes TSX FB. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,546 fps; across all powders the maximum-charge window runs from 1,483 fps to 2,546 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 77 of the 77 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (360 MPa), the top charges use 64–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.375" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon TrailBoss, ReloadSwiss RS 14 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 52, Hodgdon LEVERevolution rank at the top here: for .375 R Hoelderlin with the .375 | 270gr | Barnes TSX FB 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.