Load Specifications
Load data in caliber .375 Chey Tac with .375 | 352gr | CutEdge MTAC bullet and 60 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Vihtavuori N570 and Hodgdon Retumbo.
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: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 86% | 55,898 psi | 88% | 2615 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 47,036 psi | 74% | 2625 fps | 98.8% |
| Accurate High Country | <<locked>> | 82% | 54,375 psi | 85% | 2733 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 55,201 psi | 87% | 2740 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 57,450 psi | 90% | 2707 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 56,115 psi | 88% | 2730 fps | 100% |
| ADI AR 2217 | <<locked>> | 94% | 55,042 psi | 86% | 2713 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 55,317 psi | 87% | 2851 fps | 100% |
| ADI AR 2225 | <<locked>> | 96% | 54,215 psi | 85% | 2733 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 57,580 psi | 90% | 2700 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 57,580 psi | 90% | 2700 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 56,956 psi | 89% | 2697 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 56,478 psi | 89% | 2723 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 54,766 psi | 86% | 2625 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 55,230 psi | 87% | 2700 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 55,172 psi | 86% | 2710 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 57,116 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 56,753 psi | 89% | 2818 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 56,318 psi | 88% | 2700 fps | 99.9% |
| Bofors RP15 | <<locked>> | 88% | 55,825 psi | 87% | 2713 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 54,897 psi | 86% | 2730 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 56,478 psi | 89% | 2723 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 56,536 psi | 89% | 2726 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 54,824 psi | 86% | 2664 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 86% | 57,638 psi | 90% | 2703 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 57,682 psi | 90% | 2595 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 54,679 psi | 86% | 2792 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,898 psi | 59% | 1683 fps | 100% |
| Hodgdon US 869ᴾ | <<locked>> | 100% | 52,069 psi | 82% | 2684 fps | 96.2% |
| IMR 4955 Enduron | <<locked>> | 84% | 55,201 psi | 87% | 2644 fps | 100% |
| IMR 7828 SSC | <<locked>> | 86% | 54,549 psi | 85% | 2717 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 92% | 57,363 psi | 90% | 2654 fps | 98.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 56,782 psi | 89% | 2772 fps | 100% |
| Lovex D100 | <<locked>> | 94% | 54,041 psi | 85% | 2654 fps | 97% |
| Lovex S071 | <<locked>> | 90% | 54,360 psi | 85% | 2598 fps | 100% |
| Norma 217 | <<locked>> | 98% | 54,418 psi | 85% | 2740 fps | 100% |
| Norma MRP | <<locked>> | 84% | 56,536 psi | 89% | 2733 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 55,840 psi | 88% | 2733 fps | 100% |
| Ramshot LRT | <<locked>> | 98% | 54,926 psi | 86% | 2782 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 88% | 54,128 psi | 85% | 2664 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,827 psi | 61% | 1722 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 55,129 psi | 86% | 2776 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 54,244 psi | 85% | 2762 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 57,725 psi | 90% | 2674 fps | 100% |
| Rottweil R 905 | <<locked>> | 84% | 56,710 psi | 89% | 2687 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 94% | 54,041 psi | 85% | 2654 fps | 97% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 49,066 psi | 77% | 2631 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 56,333 psi | 88% | 2684 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 55,230 psi | 87% | 2621 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 56,898 psi | 89% | 2654 fps | 100% |
| Vihtavuori 24N41ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 2753 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 88% | 57,029 psi | 89% | 2644 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 56,014 psi | 88% | 2690 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 84% | 56,362 psi | 88% | 2644 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 55,970 psi | 88% | 2746 fps | 100% |
| Vihtavuori N565 | <<locked>> | 90% | 56,942 psi | 89% | 2740 fps | 100% |
| Vihtavuori N568 | <<locked>> | 92% | 54,897 psi | 86% | 2762 fps | 100% |
| Vihtavuori N570 | <<locked>> | 94% | 56,275 psi | 88% | 2831 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 86% | 55,216 psi | 87% | 2713 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 56,739 psi | 89% | 2654 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 45,701 psi | 72% | 2480 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 35,041 psi | 55% | 2395 fps | 95.4% |
| Accurate High Country | <<locked>> | 80% | 50,647 psi | 79% | 2677 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 47,921 psi | 75% | 2631 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 80% | 50,212 psi | 79% | 2608 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 45,382 psi | 71% | 2572 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 33,649 psi | 53% | 2352 fps | 98.8% |
| ADI AR 2218 | 121.7 gr | 86% | 35,462 psi | 56% | 2474 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 30,835 psi | 48% | 2329 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 50,488 psi | 79% | 2605 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 50,488 psi | 79% | 2605 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,024 psi | 78% | 2602 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 46,021 psi | 72% | 2572 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 44,860 psi | 70% | 2493 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 39,001 psi | 61% | 2464 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 51,140 psi | 80% | 2657 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 82% | 33,576 psi | 53% | 2408 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 88% | 35,940 psi | 56% | 2461 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,323 psi | 68% | 2497 fps | 98.4% |
| Bofors RP15 | <<locked>> | 80% | 42,830 psi | 67% | 2516 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 36,274 psi | 57% | 2421 fps | 99.3% |
| Bofors RP5 | <<locked>> | 80% | 46,021 psi | 72% | 2572 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 36,680 psi | 57% | 2418 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 47,819 psi | 75% | 2562 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,963 psi | 74% | 2549 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 54,012 psi | 85% | 2552 fps | 100% |
| Hodgdon Retumbo | 106.8 gr | 80% | 38,058 psi | 60% | 2526 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,413 psi | 45% | 1506 fps | 100% |
| Hodgdon US 869 | <<locked>> | 98% | 48,486 psi | 76% | 2628 fps | 95.3% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,573 psi | 76% | 2546 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 44,164 psi | 69% | 2559 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 84% | 44,266 psi | 69% | 2454 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 80% | 28,384 psi | 44% | 2260 fps | 96.9% |
| Lovex D100 | <<locked>> | 90% | 46,673 psi | 73% | 2539 fps | 95.2% |
| Lovex S071 | <<locked>> | 80% | 39,334 psi | 62% | 2375 fps | 100% |
| Norma 217 | <<locked>> | 80% | 28,543 psi | 45% | 2280 fps | 98.9% |
| Norma MRP | <<locked>> | 80% | 49,124 psi | 77% | 2631 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 44,657 psi | 70% | 2575 fps | 100% |
| Ramshot LRT | <<locked>> | 94% | 47,514 psi | 74% | 2664 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 80% | 40,030 psi | 63% | 2461 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,182 psi | 46% | 1542 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 37,405 psi | 59% | 2507 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 34,185 psi | 54% | 2411 fps | 97.9% |
| Rottweil R 904 | <<locked>> | 80% | 50,763 psi | 80% | 2579 fps | 100% |
| Rottweil R 905 | <<locked>> | 80% | 49,690 psi | 78% | 2592 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 90% | 46,673 psi | 73% | 2539 fps | 95.2% |
| SNPE Vectan SP 13 | <<locked>> | 92% | 37,144 psi | 58% | 2418 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 49,356 psi | 77% | 2589 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 51,677 psi | 81% | 2572 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 49,850 psi | 78% | 2559 fps | 100% |
| Vihtavuori 24N41 | <<locked>> | 96% | 49,458 psi | 78% | 2638 fps | 95.5% |
| Vihtavuori N165 | <<locked>> | 80% | 43,743 psi | 69% | 2457 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 37,159 psi | 58% | 2372 fps | 95% |
| Vihtavuori N555 | <<locked>> | 80% | 49,443 psi | 77% | 2556 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 48,704 psi | 76% | 2641 fps | 100% |
| Vihtavuori N565 | <<locked>> | 80% | 40,437 psi | 63% | 2484 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 80% | 35,491 psi | 56% | 2428 fps | 97.7% |
| Vihtavuori N570 | 110.9 gr | 80% | 33,649 psi | 53% | 2418 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 43,830 psi | 69% | 2566 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,137 psi | 72% | 2510 fps | 100% |
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 60 powders for .375 Chey Tac loaded with the .375 | 352gr | CutEdge MTAC. ADI AR 2218 delivers the highest muzzle velocity at 2,851 fps; across all powders the maximum-charge window runs from 1,683 fps to 2,851 fps. Accurate 8700 gives the best case fill at 100 %, and 60 of the 60 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 352.0 gr projectile in 0.375" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, Alliant Reloder-50, Hodgdon TrailBoss 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 2218, Vihtavuori N570, Hodgdon Retumbo rank at the top here: for .375 Chey Tac with the .375 | 352gr | CutEdge MTAC 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.