Load Specifications
Load data in caliber .408 Chey Tac with .408 | 390gr | CutEdge MTH bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Accurate High Country and ReloadSwiss RS 76.
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>> | 94% | 57,159 psi | 90% | 2740 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,824 psi | 86% | 2713 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 55,201 psi | 87% | 2854 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 56,086 psi | 88% | 2858 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 55,898 psi | 88% | 2785 fps | 100% |
| ADI AR 2213 | <<locked>> | 94% | 57,348 psi | 90% | 2851 fps | 100% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,358 psi | 80% | 2766 fps | 99.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,774 psi | 72% | 2733 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 55,985 psi | 88% | 2779 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,101 psi | 88% | 2762 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,145 psi | 90% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,303 psi | 87% | 2772 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,348 psi | 90% | 2841 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,071 psi | 86% | 2749 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,491 psi | 85% | 2818 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,347 psi | 87% | 2841 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 47,485 psi | 74% | 2789 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,114 psi | 86% | 2766 fps | 98.6% |
| Bofors RP15 | <<locked>> | 96% | 56,347 psi | 88% | 2828 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,954 psi | 85% | 2831 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 57,348 psi | 90% | 2841 fps | 100% |
| Bofors RP7 | <<locked>> | 84% | 57,058 psi | 89% | 2713 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,782 psi | 89% | 2841 fps | 100% |
| Hodgdon H414 | <<locked>> | 84% | 56,681 psi | 89% | 2772 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,593 psi | 87% | 2730 fps | 100% |
| Hodgdon H4831 | <<locked>> | 92% | 57,174 psi | 90% | 2789 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,057 psi | 88% | 2772 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,246 psi | 88% | 2684 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,072 psi | 89% | 2953 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,232 psi | 90% | 2815 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,202 psi | 58% | 1677 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,361 psi | 87% | 2707 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,013 psi | 86% | 2684 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,201 psi | 87% | 2703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,505 psi | 85% | 2717 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 94% | 55,303 psi | 87% | 2831 fps | 100% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,234 psi | 65% | 2648 fps | 98.9% |
| Lovex S065 | <<locked>> | 84% | 55,622 psi | 87% | 2680 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,290 psi | 90% | 2730 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 54,621 psi | 86% | 2707 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,289 psi | 88% | 2766 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 41,437 psi | 65% | 2671 fps | 99.9% |
| Norma MRP | <<locked>> | 92% | 57,421 psi | 90% | 2861 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,956 psi | 89% | 2746 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,144 psi | 88% | 2851 fps | 100% |
| Ramshot Hunter | <<locked>> | 86% | 55,840 psi | 88% | 2759 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,259 psi | 85% | 2785 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,058 psi | 60% | 1716 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 54,897 psi | 86% | 2740 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,348 psi | 90% | 2822 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 53,693 psi | 84% | 2894 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 2861 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 90% | 56,884 psi | 89% | 2753 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 90% | 54,839 psi | 86% | 2762 fps | 100% |
| Rottweil R 907 | <<locked>> | 84% | 57,058 psi | 89% | 2713 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,622 psi | 87% | 2680 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,290 psi | 90% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,665 psi | 86% | 2638 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,462 psi | 85% | 2759 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 54,621 psi | 86% | 2697 fps | 99.6% |
| Somchem S365 | <<locked>> | 86% | 54,056 psi | 85% | 2697 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,129 psi | 86% | 2730 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 55,753 psi | 87% | 2618 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,172 psi | 86% | 2687 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,795 psi | 86% | 2717 fps | 100% |
| Vihtavuori N170ᴾ | <<locked>> | 100% | 57,058 psi | 89% | 2792 fps | 97.4% |
| Vihtavuori N550 | <<locked>> | 84% | 54,288 psi | 85% | 2697 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,145 psi | 90% | 2772 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,188 psi | 90% | 2867 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 98% | 56,869 psi | 89% | 2851 fps | 100% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,650 psi | 84% | 2861 fps | 99.4% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 50,676 psi | 79% | 2858 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,534 psi | 85% | 2648 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,797 psi | 89% | 2772 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,174 psi | 90% | 2884 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,114 psi | 86% | 2733 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% | 35,563 psi | 56% | 2395 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 47,848 psi | 75% | 2615 fps | 100% |
| Accurate High Country | 113.3 gr | 80% | 38,856 psi | 61% | 2566 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 80% | 36,550 psi | 57% | 2507 fps | 96.1% |
| ADI AR 2209 | <<locked>> | 80% | 39,958 psi | 63% | 2520 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 80% | 35,491 psi | 56% | 2461 fps | 96.8% |
| ADI AR 2217 | <<locked>> | 86% | 32,053 psi | 50% | 2379 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 82% | 25,338 psi | 40% | 2238 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,350 psi | 63% | 2520 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,050 psi | 72% | 2621 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,301 psi | 84% | 2726 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,958 psi | 63% | 2516 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,621 psi | 56% | 2467 fps | 98.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,403 psi | 54% | 2421 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,747 psi | 47% | 2356 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,826 psi | 59% | 2566 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 40,944 psi | 64% | 2661 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 40,364 psi | 63% | 2497 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 33,185 psi | 52% | 2411 fps | 97.3% |
| Bofors RP30 | <<locked>> | 82% | 29,022 psi | 45% | 2339 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 35,621 psi | 56% | 2467 fps | 98.2% |
| Bofors RP7 | <<locked>> | 80% | 50,212 psi | 79% | 2615 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 30,545 psi | 48% | 2339 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 49,559 psi | 78% | 2671 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 52,040 psi | 82% | 2677 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 37,884 psi | 59% | 2461 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 37,217 psi | 58% | 2448 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,294 psi | 68% | 2503 fps | 100% |
| Hodgdon Retumbo | 109.1 gr | 80% | 28,979 psi | 45% | 2379 fps | 96.4% |
| Hodgdon Superformance | <<locked>> | 80% | 49,284 psi | 77% | 2700 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,891 psi | 44% | 1496 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,774 psi | 72% | 2559 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,793 psi | 81% | 2638 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 45,368 psi | 71% | 2562 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,668 psi | 62% | 2461 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 80% | 34,171 psi | 54% | 2441 fps | 96.5% |
| IMR 8133 Enduron | <<locked>> | 92% | 31,546 psi | 49% | 2428 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 49,153 psi | 77% | 2589 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,485 psi | 74% | 2585 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 30,560 psi | 48% | 2283 fps | 98.7% |
| Norma 204 | <<locked>> | 80% | 45,876 psi | 72% | 2605 fps | 99.6% |
| Norma 217 | <<locked>> | 86% | 25,773 psi | 40% | 2283 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 37,420 psi | 59% | 2533 fps | 99.5% |
| Norma URP | <<locked>> | 80% | 46,905 psi | 74% | 2602 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 33,605 psi | 53% | 2444 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 80% | 45,730 psi | 72% | 2608 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 29,834 psi | 47% | 2333 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,529 psi | 45% | 1535 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,790 psi | 75% | 2638 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,093 psi | 72% | 2661 fps | 100% |
| ReloadSwiss RS 76 | 116.8 gr | 80% | 27,847 psi | 44% | 2349 fps | 97.1% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 33,301 psi | 52% | 2487 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 41,176 psi | 65% | 2497 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 80% | 39,218 psi | 61% | 2500 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 80% | 50,212 psi | 79% | 2615 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,153 psi | 77% | 2589 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,485 psi | 74% | 2585 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,080 psi | 75% | 2543 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,885 psi | 61% | 2497 fps | 98.9% |
| Somchem S361 | <<locked>> | 80% | 41,756 psi | 65% | 2484 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 44,063 psi | 69% | 2559 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,653 psi | 62% | 2480 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 52,243 psi | 82% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,399 psi | 76% | 2592 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,447 psi | 54% | 2369 fps | 98.2% |
| Vihtavuori N170 | <<locked>> | 94% | 46,456 psi | 73% | 2625 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 47,572 psi | 75% | 2598 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,450 psi | 60% | 2487 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 37,565 psi | 59% | 2526 fps | 97.1% |
| Vihtavuori N565 | <<locked>> | 82% | 32,764 psi | 51% | 2408 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 88% | 34,925 psi | 55% | 2507 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 94% | 40,915 psi | 64% | 2674 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,427 psi | 74% | 2552 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,705 psi | 78% | 2671 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,589 psi | 48% | 2461 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,245 psi | 57% | 2415 fps | 98.2% |
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 76 powders for .408 Chey Tac loaded with the .408 | 390gr | CutEdge MTH. Hodgdon Retumbo delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,953 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 390.0 gr projectile in 0.408" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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. Hodgdon Retumbo, Accurate High Country, ReloadSwiss RS 76 rank at the top here: for .408 Chey Tac with the .408 | 390gr | CutEdge MTH 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.