Load Specifications
Load data in caliber .375 Chey Tac with .375 | 250gr | Barnes Solid BT bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Accurate MAGPRO and Bofors RP5.
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% | 55,869 psi | 88% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,637 psi | 89% | 3071 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 57,508 psi | 90% | 3209 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 54,607 psi | 86% | 3150 fps | 99% |
| ADI AR 2209 | <<locked>> | 90% | 57,566 psi | 90% | 3140 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 55,608 psi | 87% | 3150 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,795 psi | 84% | 3107 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,327 psi | 76% | 3071 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,172 psi | 85% | 3081 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,609 psi | 90% | 3130 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,101 psi | 89% | 3127 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,840 psi | 88% | 3143 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,305 psi | 90% | 3100 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 57,043 psi | 89% | 3169 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 53,969 psi | 85% | 3143 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 50,836 psi | 80% | 3127 fps | 97.2% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,971 psi | 89% | 3100 fps | 98.1% |
| Bofors RP15 | <<locked>> | 94% | 55,042 psi | 86% | 3130 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,927 psi | 89% | 3182 fps | 99.9% |
| Bofors RP5 | <<locked>> | 92% | 55,840 psi | 88% | 3143 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 54,781 psi | 86% | 3018 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 55,361 psi | 87% | 3130 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 54,447 psi | 85% | 3074 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,811 psi | 89% | 3087 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 55,245 psi | 87% | 3081 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,128 psi | 85% | 3061 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,172 psi | 85% | 2989 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,767 psi | 87% | 3258 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,984 psi | 86% | 3107 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,159 psi | 58% | 1972 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,695 psi | 89% | 3058 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,072 psi | 88% | 3041 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 57,000 psi | 89% | 3061 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,028 psi | 88% | 3061 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 94% | 57,493 psi | 90% | 3186 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,772 psi | 69% | 2979 fps | 98.5% |
| Lovex S065 | <<locked>> | 84% | 56,971 psi | 89% | 3035 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,245 psi | 87% | 3035 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 57,116 psi | 90% | 3054 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,085 psi | 85% | 3061 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 44,135 psi | 69% | 3005 fps | 99.8% |
| Norma MRP | <<locked>> | 90% | 55,782 psi | 87% | 3163 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,824 psi | 86% | 3054 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,433 psi | 85% | 3143 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 86% | 57,667 psi | 90% | 3117 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 57,348 psi | 90% | 3130 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,029 psi | 60% | 2018 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,855 psi | 89% | 3094 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,274 psi | 87% | 3123 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 57,058 psi | 89% | 3248 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 3205 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 88% | 54,868 psi | 86% | 3048 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 90% | 56,768 psi | 89% | 3117 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 54,781 psi | 86% | 3018 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,971 psi | 89% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,245 psi | 87% | 3035 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,130 psi | 88% | 2986 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,347 psi | 88% | 3114 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 56,492 psi | 89% | 3035 fps | 99.3% |
| Somchem S365 | <<locked>> | 86% | 55,767 psi | 87% | 3051 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,159 psi | 90% | 3081 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 56,956 psi | 89% | 2969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,579 psi | 89% | 3041 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,000 psi | 89% | 3061 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 55,985 psi | 88% | 3071 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 84% | 55,869 psi | 88% | 3048 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,666 psi | 87% | 3081 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,419 psi | 87% | 3163 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 96% | 55,912 psi | 88% | 3143 fps | 99.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,927 psi | 89% | 3209 fps | 99.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 3202 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,231 psi | 88% | 2986 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,578 psi | 86% | 3074 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,999 psi | 88% | 3189 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,246 psi | 90% | 3077 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% | 37,043 psi | 58% | 2713 fps | 99.2% |
| Accurate 4350 | <<locked>> | 80% | 49,327 psi | 77% | 2963 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,335 psi | 63% | 2894 fps | 97.2% |
| Accurate MAGPRO | 116.2 gr | 80% | 38,043 psi | 60% | 2825 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 40,944 psi | 64% | 2844 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 80% | 36,637 psi | 57% | 2776 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 88% | 35,636 psi | 56% | 2740 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 84% | 28,297 psi | 44% | 2582 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,423 psi | 65% | 2848 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,123 psi | 74% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,046 psi | 64% | 2841 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,941 psi | 58% | 2789 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,549 psi | 56% | 2740 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,864 psi | 48% | 2657 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,581 psi | 62% | 2897 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 43,700 psi | 68% | 2989 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 44,309 psi | 69% | 2867 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 34,316 psi | 54% | 2720 fps | 96.2% |
| Bofors RP30 | <<locked>> | 86% | 34,867 psi | 55% | 2762 fps | 95.9% |
| Bofors RP5 | 110.5 gr | 80% | 36,941 psi | 58% | 2789 fps | 97.3% |
| Bofors RP7 | <<locked>> | 80% | 51,372 psi | 81% | 2966 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 33,924 psi | 53% | 2700 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 50,894 psi | 80% | 3018 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 53,156 psi | 83% | 3028 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 80% | 39,088 psi | 61% | 2779 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,406 psi | 60% | 2762 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,454 psi | 70% | 2844 fps | 100% |
| Hodgdon Retumbo | 109.9 gr | 80% | 30,124 psi | 47% | 2677 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 51,068 psi | 80% | 3048 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,833 psi | 44% | 1772 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,746 psi | 73% | 2897 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,678 psi | 83% | 2986 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 46,717 psi | 73% | 2907 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,654 psi | 64% | 2779 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 80% | 35,317 psi | 55% | 2753 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 92% | 33,344 psi | 52% | 2736 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 50,227 psi | 79% | 2933 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,646 psi | 76% | 2930 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 31,865 psi | 50% | 2589 fps | 97.9% |
| Norma 204 | <<locked>> | 80% | 47,166 psi | 74% | 2946 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 29,124 psi | 46% | 2638 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 38,928 psi | 61% | 2858 fps | 99% |
| Norma URP | <<locked>> | 80% | 48,080 psi | 75% | 2949 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,867 psi | 55% | 2753 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 47,079 psi | 74% | 2949 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,241 psi | 49% | 2631 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,558 psi | 45% | 1814 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,501 psi | 78% | 2986 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,703 psi | 75% | 3009 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 29,240 psi | 46% | 2648 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 38,232 psi | 60% | 2867 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 42,264 psi | 66% | 2822 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 80% | 40,437 psi | 63% | 2828 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 80% | 51,372 psi | 81% | 2966 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,227 psi | 79% | 2933 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,646 psi | 76% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,327 psi | 77% | 2881 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,103 psi | 63% | 2822 fps | 98.1% |
| Somchem S361 | <<locked>> | 80% | 43,192 psi | 68% | 2805 fps | 97% |
| Somchem S365 | <<locked>> | 80% | 45,339 psi | 71% | 2900 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,002 psi | 64% | 2805 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 80% | 53,417 psi | 84% | 2923 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,545 psi | 78% | 2936 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,563 psi | 56% | 2674 fps | 97.3% |
| Vihtavuori N170 | <<locked>> | 96% | 52,286 psi | 82% | 3009 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 48,965 psi | 77% | 2946 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,900 psi | 63% | 2818 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,914 psi | 61% | 2848 fps | 96.1% |
| Vihtavuori N565 | <<locked>> | 84% | 36,825 psi | 58% | 2782 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 90% | 39,537 psi | 62% | 2887 fps | 95.4% |
| Vihtavuori N570 | <<locked>> | 96% | 46,499 psi | 73% | 3068 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,849 psi | 77% | 2884 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,995 psi | 80% | 3022 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,111 psi | 50% | 2779 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,536 psi | 59% | 2730 fps | 97.4% |
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 75 powders for .375 Chey Tac loaded with the .375 | 250gr | Barnes Solid BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,258 fps; across all powders the maximum-charge window runs from 1,972 fps to 3,258 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 250.0 gr projectile in 0.375" calls for a 1:15.0 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 MAGPRO, Bofors RP5 rank at the top here: for .375 Chey Tac with the .375 | 250gr | Barnes Solid BT 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.