Load Specifications
Load data in caliber .408 Chey Tac with .408 | 425gr | CutEdge LZR MAX 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, ReloadSwiss RS 76 and IMR 7828 SSC.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 57,000 psi | 89% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,389 psi | 85% | 2589 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 55,172 psi | 86% | 2733 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 56,014 psi | 88% | 2740 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 55,434 psi | 87% | 2661 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 57,174 psi | 90% | 2733 fps | 100% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,940 psi | 86% | 2703 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 47,297 psi | 74% | 2700 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,240 psi | 77% | 2674 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 55,666 psi | 87% | 2661 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,825 psi | 87% | 2638 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,042 psi | 86% | 2654 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,305 psi | 90% | 2723 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,056 psi | 86% | 2625 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,694 psi | 86% | 2697 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,390 psi | 87% | 2717 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,503 psi | 81% | 2746 fps | 98.9% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 42,830 psi | 67% | 2605 fps | 96.8% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,389 psi | 85% | 2651 fps | 99.1% |
| Bofors RP15 | <<locked>> | 94% | 56,333 psi | 88% | 2710 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 54,259 psi | 85% | 2717 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 57,305 psi | 90% | 2723 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,289 psi | 88% | 2589 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 56,695 psi | 89% | 2723 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 56,115 psi | 88% | 2644 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 56,608 psi | 89% | 2667 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,651 psi | 87% | 2654 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,898 psi | 88% | 2562 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,421 psi | 90% | 2835 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,637 psi | 89% | 2687 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,391 psi | 59% | 1604 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,752 psi | 86% | 2585 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,711 psi | 90% | 2605 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,940 psi | 86% | 2582 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,421 psi | 90% | 2648 fps | 100% |
| IMR 7828 SSC | <<locked>> | 92% | 55,303 psi | 87% | 2713 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 96% | 55,695 psi | 87% | 2595 fps | 96.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,846 psi | 70% | 2605 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 54,969 psi | 86% | 2556 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,797 psi | 89% | 2605 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,752 psi | 86% | 2592 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,724 psi | 87% | 2644 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 45,179 psi | 71% | 2621 fps | 100% |
| Norma MRP | <<locked>> | 90% | 57,305 psi | 90% | 2740 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,594 psi | 89% | 2621 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,144 psi | 88% | 2733 fps | 100% |
| Ramshot Hunter | <<locked>> | 84% | 55,477 psi | 87% | 2638 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 54,230 psi | 85% | 2667 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,305 psi | 60% | 1644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,592 psi | 86% | 2615 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,942 psi | 89% | 2694 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 53,853 psi | 84% | 2776 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 2808 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 56,362 psi | 88% | 2631 fps | 100% |
| Rottweil R 905 | <<locked>> | 88% | 54,636 psi | 86% | 2644 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 56,289 psi | 88% | 2589 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,969 psi | 86% | 2556 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,797 psi | 89% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,464 psi | 90% | 2562 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,244 psi | 85% | 2641 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 57,667 psi | 90% | 2628 fps | 100% |
| Somchem S365 | <<locked>> | 86% | 57,493 psi | 90% | 2615 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,781 psi | 86% | 2612 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,621 psi | 86% | 2562 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,549 psi | 85% | 2598 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 56,753 psi | 89% | 2680 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 84% | 57,217 psi | 90% | 2615 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,130 psi | 90% | 2651 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,942 psi | 89% | 2749 fps | 100% |
| Vihtavuori N565 | <<locked>> | 96% | 56,913 psi | 89% | 2733 fps | 100% |
| Vihtavuori N568 | <<locked>> | 98% | 53,954 psi | 85% | 2749 fps | 99.8% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,839 psi | 86% | 2808 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,667 psi | 90% | 2566 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,260 psi | 88% | 2648 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 53,809 psi | 84% | 2713 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,650 psi | 86% | 2612 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% | 38,014 psi | 60% | 2339 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 50,807 psi | 80% | 2539 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 41,698 psi | 65% | 2516 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 80% | 39,291 psi | 62% | 2464 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 80% | 42,409 psi | 66% | 2461 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 37,811 psi | 59% | 2411 fps | 98.4% |
| ADI AR 2217 | <<locked>> | 80% | 28,021 psi | 44% | 2182 fps | 95% |
| ADI AR 2218 | <<locked>> | 94% | 38,145 psi | 60% | 2507 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 80% | 25,353 psi | 40% | 2156 fps | 97% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,786 psi | 67% | 2461 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,994 psi | 77% | 2546 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,380 psi | 66% | 2457 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,232 psi | 60% | 2418 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,014 psi | 58% | 2359 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,792 psi | 50% | 2310 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,060 psi | 64% | 2510 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 38,232 psi | 60% | 2507 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 98% | 39,711 psi | 62% | 2546 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 37,434 psi | 59% | 2343 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 35,592 psi | 56% | 2362 fps | 98.8% |
| Bofors RP30 | <<locked>> | 80% | 29,167 psi | 46% | 2247 fps | 96.2% |
| Bofors RP5 | <<locked>> | 80% | 38,232 psi | 60% | 2418 fps | 99.3% |
| Bofors RP7 | <<locked>> | 80% | 52,779 psi | 83% | 2539 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 30,400 psi | 48% | 2247 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 80% | 52,475 psi | 82% | 2595 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,364 psi | 63% | 2411 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,668 psi | 62% | 2395 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,992 psi | 72% | 2431 fps | 100% |
| Hodgdon Retumbo | 108 gr | 80% | 31,067 psi | 49% | 2349 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 80% | 52,620 psi | 82% | 2635 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 44% | 1434 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,196 psi | 76% | 2490 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,201 psi | 85% | 2559 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,182 psi | 76% | 2490 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,814 psi | 66% | 2402 fps | 98.7% |
| IMR 7828 SSC | 107.9 gr | 80% | 36,506 psi | 57% | 2395 fps | 98.2% |
| IMR 7977 Enduron | <<locked>> | 92% | 49,008 psi | 77% | 2497 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 86% | 27,934 psi | 44% | 2238 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 51,706 psi | 81% | 2510 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,096 psi | 79% | 2516 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,721 psi | 51% | 2234 fps | 99.6% |
| Norma 204 | <<locked>> | 80% | 48,602 psi | 76% | 2543 fps | 100% |
| Norma 217 | <<locked>> | 82% | 24,352 psi | 38% | 2149 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 40,234 psi | 63% | 2480 fps | 100% |
| Norma URP | <<locked>> | 80% | 49,748 psi | 78% | 2530 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,143 psi | 57% | 2405 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 80% | 48,530 psi | 76% | 2539 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,097 psi | 50% | 2293 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,747 psi | 45% | 1470 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,010 psi | 80% | 2569 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,327 psi | 77% | 2592 fps | 100% |
| ReloadSwiss RS 76 | 115.6 gr | 80% | 29,936 psi | 47% | 2323 fps | 99% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 31,183 psi | 49% | 2339 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 43,569 psi | 68% | 2438 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 80% | 41,829 psi | 66% | 2444 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 80% | 52,779 psi | 83% | 2539 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,706 psi | 81% | 2510 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,096 psi | 79% | 2516 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,546 psi | 79% | 2470 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,495 psi | 65% | 2441 fps | 99.7% |
| Somchem S361 | <<locked>> | 80% | 44,179 psi | 69% | 2428 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 47,036 psi | 74% | 2484 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,192 psi | 66% | 2421 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 51,126 psi | 80% | 2516 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,695 psi | 57% | 2313 fps | 99.3% |
| Vihtavuori N170 | <<locked>> | 90% | 43,294 psi | 68% | 2467 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 50,386 psi | 79% | 2526 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,205 psi | 65% | 2425 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,248 psi | 63% | 2477 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 80% | 32,866 psi | 52% | 2313 fps | 96.8% |
| Vihtavuori N568 | <<locked>> | 84% | 32,721 psi | 51% | 2356 fps | 95.4% |
| Vihtavuori N570 | <<locked>> | 90% | 38,377 psi | 60% | 2516 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,256 psi | 79% | 2477 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,591 psi | 82% | 2598 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,794 psi | 53% | 2411 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,725 psi | 61% | 2362 fps | 99.3% |
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 | 425gr | CutEdge LZR MAX. Hodgdon Retumbo delivers the highest muzzle velocity at 2,835 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,835 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 59–90 %, leaving at least 10 % headroom. The 425.0 gr projectile in 0.408" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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, ReloadSwiss RS 76, IMR 7828 SSC rank at the top here: for .408 Chey Tac with the .408 | 425gr | CutEdge LZR MAX 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.