Load Specifications
Load data in caliber .375 Raptor with .375 | 200gr | Sierra Pro-Hunter bullet and 33 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, Norma 200 and Alliant Reloder-7.
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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Max Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 90% | 50,169 psi | 86% | 2556 fps | 99.5% |
| Accurate 2015ᴾ | <<locked>> | 100% | 41,872 psi | 72% | 2513 fps | 97.7% |
| Accurate LT-30 | <<locked>> | 96% | 50,720 psi | 87% | 2556 fps | 97.9% |
| Accurate LT-32 | <<locked>> | 96% | 51,256 psi | 88% | 2559 fps | 96% |
| ADI AR 2205 | <<locked>> | 82% | 50,038 psi | 86% | 2448 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 52,025 psi | 90% | 2651 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 50,662 psi | 87% | 2680 fps | 97.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 38,943 psi | 67% | 2533 fps | 99.1% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 48,515 psi | 84% | 2641 fps | 99.5% |
| Alliant Reloder-7 | <<locked>> | 94% | 51,242 psi | 88% | 2615 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 51,619 psi | 89% | 2589 fps | 98.2% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 48,443 psi | 84% | 2648 fps | 97.3% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 49,603 psi | 86% | 2667 fps | 96.4% |
| Hodgdon H4198 | <<locked>> | 92% | 49,661 psi | 86% | 2556 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,763 psi | 53% | 1562 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 51,039 psi | 88% | 2628 fps | 99.9% |
| IMR 4227 | <<locked>> | 88% | 49,966 psi | 86% | 2543 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 50,227 psi | 87% | 2575 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 96% | 51,764 psi | 89% | 2680 fps | 95.9% |
| Lovex S053 | <<locked>> | 90% | 51,155 psi | 88% | 2539 fps | 100% |
| Norma 200 | <<locked>> | 98% | 52,025 psi | 90% | 2674 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,603 psi | 53% | 1601 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 52,185 psi | 90% | 2615 fps | 100% |
| Shooters World AR Plus | <<locked>> | 96% | 51,764 psi | 89% | 2680 fps | 95.9% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 50,227 psi | 87% | 2575 fps | 99.8% |
| Shooters World SOCOM | <<locked>> | 82% | 50,836 psi | 88% | 2552 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 51,895 psi | 89% | 2405 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 50,647 psi | 87% | 2680 fps | 96.6% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 50,125 psi | 86% | 2648 fps | 98.5% |
| Vihtavuori N110 | <<locked>> | 84% | 50,473 psi | 87% | 2454 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 52,214 psi | 90% | 2608 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 47,094 psi | 81% | 2552 fps | 99.1% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 40,799 psi | 70% | 2454 fps | 97.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 36,172 psi | 62% | 2320 fps | 97.2% |
| Accurate 2015 | <<locked>> | 92% | 32,793 psi | 57% | 2333 fps | 95% |
| Accurate LT-30 | <<locked>> | 88% | 39,827 psi | 69% | 2372 fps | 95.5% |
| Accurate LT-32 | <<locked>> | 94% | 48,225 psi | 83% | 2513 fps | 95.3% |
| ADI AR 2205 | <<locked>> | 80% | 47,036 psi | 81% | 2408 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 31,734 psi | 55% | 2303 fps | 99.3% |
| ADI AR 2219 | 49.2 gr | 92% | 41,568 psi | 72% | 2530 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 90% | 28,747 psi | 50% | 2290 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 84% | 29,747 psi | 51% | 2274 fps | 95.3% |
| Alliant Reloder-7 | 40.1 gr | 80% | 33,475 psi | 58% | 2297 fps | 97.1% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 37,507 psi | 65% | 2356 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 94% | 40,045 psi | 69% | 2500 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 98% | 46,398 psi | 80% | 2615 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 86% | 41,452 psi | 71% | 2415 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,756 psi | 39% | 1398 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 28,935 psi | 50% | 2192 fps | 95.7% |
| IMR 4227 | <<locked>> | 80% | 39,276 psi | 68% | 2369 fps | 99.6% |
| Lovex D060 | <<locked>> | 80% | 47,268 psi | 81% | 2530 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 94% | 48,124 psi | 83% | 2628 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 38,334 psi | 66% | 2339 fps | 100% |
| Norma 200 | 40.5 gr | 80% | 29,675 psi | 51% | 2260 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,350 psi | 39% | 1427 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 38,435 psi | 66% | 2395 fps | 99.4% |
| Shooters World AR Plus | <<locked>> | 94% | 48,124 psi | 83% | 2628 fps | 95.1% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 47,268 psi | 81% | 2530 fps | 99.7% |
| Shooters World SOCOM | <<locked>> | 80% | 47,543 psi | 82% | 2503 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,071 psi | 62% | 2178 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 44,382 psi | 77% | 2579 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 37,086 psi | 64% | 2415 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 45,208 psi | 78% | 2382 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 31,908 psi | 55% | 2277 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 30,850 psi | 53% | 2244 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 94% | 34,069 psi | 59% | 2320 fps | 95.1% |
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 53 powders for .375 Raptor loaded with the .375 | 200gr | Sierra Pro-Hunter. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,684 fps; across all powders the maximum-charge window runs from 1,562 fps to 2,684 fps. Accurate 2015 gives the best case fill at 100 %, and 53 of the 53 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (400 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2460, Accurate 2495 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. ADI AR 2219, Norma 200, Alliant Reloder-7 rank at the top here: for .375 Raptor with the .375 | 200gr | Sierra Pro-Hunter they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2495, Accurate 2520, Alliant Power Pro 1200-R 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.