Load Specifications
Load data in caliber .375 Chey Tac with .375 | 225gr | Hornady SP bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Accurate High Country and Ramshot Grand.
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% | 56,347 psi | 88% | 3176 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,246 psi | 90% | 3219 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 53,882 psi | 84% | 3281 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 92% | 54,955 psi | 86% | 3281 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 82% | 57,667 psi | 90% | 3176 fps | 100% |
| ADI AR 2209 | <<locked>> | 90% | 54,331 psi | 85% | 3219 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 56,144 psi | 88% | 3284 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,517 psi | 79% | 3169 fps | 98.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,179 psi | 71% | 3133 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,607 psi | 86% | 3215 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,607 psi | 86% | 3215 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,157 psi | 85% | 3222 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,419 psi | 87% | 3235 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,682 psi | 90% | 3268 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,202 psi | 88% | 3278 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,348 psi | 90% | 3241 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,000 psi | 89% | 3307 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,157 psi | 85% | 3281 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,331 psi | 85% | 3173 fps | 96.7% |
| Bofors RP15 | <<locked>> | 96% | 55,230 psi | 87% | 3261 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 3248 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 56,202 psi | 88% | 3278 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 55,579 psi | 87% | 3163 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 3261 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 55,027 psi | 86% | 3219 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,508 psi | 90% | 3228 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 55,898 psi | 88% | 3212 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,810 psi | 86% | 3196 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,520 psi | 85% | 3133 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,840 psi | 88% | 3389 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,883 psi | 88% | 3251 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,999 psi | 58% | 2073 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,450 psi | 90% | 3199 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,058 psi | 89% | 3189 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 57,435 psi | 90% | 3202 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,811 psi | 89% | 3199 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 94% | 53,882 psi | 84% | 3258 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,640 psi | 64% | 3028 fps | 96.8% |
| Lovex S065 | <<locked>> | 84% | 54,215 psi | 85% | 3130 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,086 psi | 88% | 3182 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,363 psi | 90% | 3189 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,795 psi | 86% | 3202 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 40,756 psi | 64% | 3054 fps | 98.9% |
| Norma MRP | <<locked>> | 92% | 56,086 psi | 88% | 3301 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,535 psi | 87% | 3199 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,694 psi | 86% | 3274 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 54,418 psi | 85% | 3202 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,609 psi | 90% | 3261 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,782 psi | 59% | 2119 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,435 psi | 90% | 3238 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,709 psi | 87% | 3271 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,276 psi | 90% | 3383 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,257 psi | 82% | 3264 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 82% | 57,029 psi | 89% | 3163 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,477 psi | 87% | 3186 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 92% | 57,130 psi | 90% | 3255 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 55,579 psi | 87% | 3163 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,215 psi | 85% | 3130 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,086 psi | 88% | 3182 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,507 psi | 89% | 3018 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,116 psi | 90% | 3130 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,695 psi | 89% | 3248 fps | 99.8% |
| Somchem S355 | <<locked>> | 82% | 56,478 psi | 89% | 3156 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,435 psi | 90% | 3169 fps | 98.9% |
| Somchem S365 | <<locked>> | 88% | 56,130 psi | 88% | 3199 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,099 psi | 85% | 3163 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 54,302 psi | 85% | 3068 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,305 psi | 90% | 3186 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,406 psi | 90% | 3192 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 56,594 psi | 89% | 3196 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,840 psi | 88% | 3222 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,840 psi | 88% | 3297 fps | 99% |
| Vihtavuori N565 | <<locked>> | 98% | 56,057 psi | 88% | 3271 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 3268 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,072 psi | 89% | 3130 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,158 psi | 86% | 3219 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,738 psi | 87% | 3330 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,983 psi | 85% | 3156 fps | 99.6% |
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% | 34,621 psi | 54% | 2772 fps | 97.9% |
| Accurate 4350 | <<locked>> | 80% | 46,369 psi | 73% | 3045 fps | 100% |
| Accurate High Country | 115.9 gr | 80% | 37,637 psi | 59% | 2949 fps | 95.2% |
| Accurate MAGPRO | 123.9 gr | 84% | 41,060 psi | 64% | 3012 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 54,114 psi | 85% | 3123 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,580 psi | 60% | 2910 fps | 96.6% |
| ADI AR 2213 | <<locked>> | 84% | 39,581 psi | 62% | 2959 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 92% | 38,392 psi | 60% | 2913 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 88% | 30,284 psi | 47% | 2743 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,001 psi | 61% | 2913 fps | 96.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,001 psi | 61% | 2913 fps | 96.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,208 psi | 69% | 3054 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,532 psi | 81% | 3176 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,653 psi | 61% | 2907 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,490 psi | 54% | 2841 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,156 psi | 52% | 2805 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,921 psi | 45% | 2707 fps | 96.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,651 psi | 57% | 2956 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 47,935 psi | 75% | 3051 fps | 95% |
| Bofors RP15 | <<locked>> | 82% | 34,418 psi | 54% | 2838 fps | 95.1% |
| Bofors RP30 | <<locked>> | 90% | 37,275 psi | 58% | 2933 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 34,490 psi | 54% | 2841 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 48,921 psi | 77% | 3048 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 36,593 psi | 57% | 2874 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 47,979 psi | 75% | 3097 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 50,415 psi | 79% | 3110 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 42,322 psi | 66% | 2966 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,481 psi | 65% | 2946 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,785 psi | 65% | 2927 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,548 psi | 54% | 2920 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 47,979 psi | 75% | 3120 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,644 psi | 43% | 1864 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,338 psi | 69% | 2972 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,270 psi | 79% | 3077 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 44,048 psi | 69% | 2989 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,147 psi | 64% | 2907 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 84% | 38,072 psi | 60% | 2933 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,971 psi | 60% | 2963 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 47,834 psi | 75% | 3022 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,180 psi | 72% | 3012 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 29,718 psi | 47% | 2641 fps | 96.1% |
| Norma 204 | <<locked>> | 80% | 44,454 psi | 70% | 3015 fps | 98% |
| Norma 217 | <<locked>> | 92% | 30,922 psi | 48% | 2795 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 36,245 psi | 57% | 2917 fps | 97.5% |
| Norma URP | <<locked>> | 80% | 45,382 psi | 71% | 3031 fps | 100% |
| Ramshot Grand | 120.6 gr | 84% | 37,695 psi | 59% | 2936 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 44,309 psi | 69% | 3028 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 33,750 psi | 53% | 2805 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,210 psi | 44% | 1906 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,383 psi | 73% | 3064 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,686 psi | 70% | 3087 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,618 psi | 50% | 2822 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 41,249 psi | 65% | 3048 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 53,287 psi | 84% | 3107 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,016 psi | 63% | 2890 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 37,971 psi | 60% | 2890 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 80% | 48,921 psi | 77% | 3048 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,834 psi | 75% | 3022 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,180 psi | 72% | 3012 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,084 psi | 83% | 2972 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,934 psi | 74% | 2966 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,637 psi | 59% | 2884 fps | 96.5% |
| Somchem S355 | <<locked>> | 80% | 52,997 psi | 83% | 3104 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 40,872 psi | 64% | 2867 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 42,409 psi | 66% | 2982 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,580 psi | 60% | 2871 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 80% | 50,821 psi | 80% | 3018 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,818 psi | 73% | 3022 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,359 psi | 52% | 2730 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 46,282 psi | 73% | 3028 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,289 psi | 58% | 2890 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 82% | 39,146 psi | 61% | 2969 fps | 95% |
| Vihtavuori N565 | <<locked>> | 88% | 39,537 psi | 62% | 2956 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 94% | 42,482 psi | 67% | 3064 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,224 psi | 72% | 2972 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,124 psi | 75% | 3100 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,544 psi | 46% | 2825 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,288 psi | 55% | 2785 fps | 95.5% |
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 78 powders for .375 Chey Tac loaded with the .375 | 225gr | Hornady SP. Hodgdon Retumbo delivers the highest muzzle velocity at 3,389 fps; across all powders the maximum-charge window runs from 2,073 fps to 3,389 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 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. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Accurate MAGPRO, Accurate High Country, Ramshot Grand rank at the top here: for .375 Chey Tac with the .375 | 225gr | Hornady SP 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.