Load Specifications
Bullet:.375 | 220gr | SUS-TAC HP
Bullet Manufacturer:SUS-TAC
Bullet Weight:220 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:.375 Chey Tac load data
Case Length (l3):3.02"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:161 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:29"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:6.0
Load data in caliber .375 Chey Tac with .375 | 220gr | SUS-TAC HP bullet and 81 powders. The key underlying parameters are shown in the table above.
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>> | 96% | 56,826 psi | 89% | 3205 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,085 psi | 85% | 3199 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 54,375 psi | 85% | 3314 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 94% | 55,535 psi | 87% | 3310 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 82% | 55,245 psi | 87% | 3163 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,158 psi | 86% | 3255 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 96% | 56,753 psi | 89% | 3317 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,659 psi | 75% | 3130 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,409 psi | 66% | 3091 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 55,419 psi | 87% | 3251 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,478 psi | 89% | 3186 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,868 psi | 86% | 3258 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 56,159 psi | 88% | 3274 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,752 psi | 86% | 3241 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,652 psi | 89% | 3310 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,911 psi | 84% | 3222 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,476 psi | 84% | 3281 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,346 psi | 85% | 3314 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,463 psi | 87% | 3202 fps | 96.4% |
| Bofors RP15 | <<locked>> | 98% | 55,637 psi | 87% | 3294 fps | 99.6% |
| Bofors RP3 | <<locked>> | 82% | 57,740 psi | 90% | 3202 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,472 psi | 78% | 3212 fps | 98.6% |
| Bofors RP5 | <<locked>> | 96% | 56,652 psi | 89% | 3310 fps | 99.7% |
| Bofors RP7 | <<locked>> | 86% | 56,753 psi | 89% | 3202 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 3225 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 86% | 55,912 psi | 88% | 3255 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 55,013 psi | 86% | 3209 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 56,869 psi | 89% | 3248 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,550 psi | 87% | 3228 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,245 psi | 87% | 3166 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,301 psi | 82% | 3350 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 56,826 psi | 89% | 3291 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,825 psi | 58% | 2077 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,853 psi | 86% | 3179 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,723 psi | 86% | 3169 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 54,549 psi | 85% | 3186 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,157 psi | 85% | 3173 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 96% | 54,476 psi | 85% | 3287 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 55,259 psi | 87% | 3166 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,942 psi | 89% | 3215 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,143 psi | 85% | 3166 fps | 100% |
| Norma 204 | <<locked>> | 88% | 55,927 psi | 88% | 3241 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 37,884 psi | 59% | 3012 fps | 97.7% |
| Norma MRP | <<locked>> | 94% | 56,565 psi | 89% | 3337 fps | 100% |
| Norma URP | <<locked>> | 88% | 56,231 psi | 88% | 3235 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,187 psi | 86% | 3304 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 55,347 psi | 87% | 3241 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 53,693 psi | 84% | 3228 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,492 psi | 59% | 2123 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,580 psi | 90% | 3209 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,506 psi | 87% | 3261 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,201 psi | 85% | 3219 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,521 psi | 89% | 3307 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,403 psi | 84% | 3346 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,341 psi | 76% | 3219 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 82% | 54,230 psi | 85% | 3146 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,376 psi | 88% | 3219 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 54,070 psi | 85% | 3225 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 86% | 56,753 psi | 89% | 3202 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,259 psi | 87% | 3166 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,942 psi | 89% | 3215 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,840 psi | 88% | 3205 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,389 psi | 85% | 3015 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,694 psi | 86% | 3114 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 57,392 psi | 90% | 3281 fps | 99.7% |
| Somchem S355 | <<locked>> | 84% | 57,609 psi | 90% | 3196 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,694 psi | 86% | 3143 fps | 98.1% |
| Somchem S365 | <<locked>> | 90% | 56,594 psi | 89% | 3232 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,752 psi | 86% | 3196 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 55,347 psi | 87% | 3107 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,462 psi | 85% | 3169 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,273 psi | 85% | 3166 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 57,522 psi | 90% | 3232 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,202 psi | 88% | 3251 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,405 psi | 88% | 3327 fps | 98.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,463 psi | 88% | 3301 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,385 psi | 77% | 3225 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,244 psi | 85% | 3120 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,202 psi | 88% | 3258 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 55,405 psi | 87% | 3360 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,766 psi | 86% | 3186 fps | 99.4% |
Start Load - Barrel Length: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 32,619 psi | 51% | 2743 fps | 96.9% |
| Accurate 4350 | <<locked>> | 80% | 43,903 psi | 69% | 3025 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 40,741 psi | 64% | 3048 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 88% | 44,686 psi | 70% | 3110 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 51,895 psi | 81% | 3110 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,666 psi | 57% | 2881 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 86% | 40,248 psi | 63% | 2992 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 94% | 38,841 psi | 61% | 2936 fps | 95% |
| ADI AR 2225 | <<locked>> | 92% | 32,532 psi | 51% | 2831 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,999 psi | 58% | 2887 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,026 psi | 83% | 3133 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,003 psi | 66% | 3035 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,602 psi | 76% | 3156 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,695 psi | 57% | 2881 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,838 psi | 55% | 2874 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,212 psi | 49% | 2779 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,182 psi | 46% | 2730 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,142 psi | 54% | 2920 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,982 psi | 81% | 3140 fps | 95.5% |
| Bofors RP15 | <<locked>> | 86% | 37,144 psi | 58% | 2930 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 54,027 psi | 85% | 3150 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 37,391 psi | 59% | 2959 fps | 95.3% |
| Bofors RP5 | <<locked>> | 82% | 34,838 psi | 55% | 2874 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 46,833 psi | 73% | 3031 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 90% | 37,130 psi | 58% | 2900 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 45,629 psi | 72% | 3074 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 48,138 psi | 75% | 3091 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 42,946 psi | 67% | 2995 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,177 psi | 66% | 2979 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,595 psi | 62% | 2907 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 34,795 psi | 55% | 2943 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 45,179 psi | 71% | 3094 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,485 psi | 43% | 1867 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,351 psi | 66% | 2953 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,182 psi | 76% | 3058 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 41,814 psi | 66% | 2966 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,858 psi | 66% | 2940 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 88% | 41,278 psi | 65% | 3028 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 45,716 psi | 72% | 3005 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 44,077 psi | 69% | 2989 fps | 99% |
| Lovex S071 | <<locked>> | 82% | 29,936 psi | 47% | 2671 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 42,322 psi | 66% | 2989 fps | 97.1% |
| Norma 217 | <<locked>> | 96% | 33,054 psi | 52% | 2881 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 33,968 psi | 53% | 2881 fps | 96.2% |
| Norma URP | <<locked>> | 80% | 43,120 psi | 68% | 3015 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 38,145 psi | 60% | 2963 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 42,090 psi | 66% | 3005 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 86% | 34,098 psi | 53% | 2831 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,050 psi | 44% | 1909 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,882 psi | 84% | 3153 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,561 psi | 81% | 3205 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,859 psi | 69% | 3041 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,206 psi | 66% | 3061 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 31,879 psi | 50% | 2844 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 41,452 psi | 65% | 3071 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 50,836 psi | 80% | 3094 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,654 psi | 64% | 2923 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 35,824 psi | 56% | 2858 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 46,833 psi | 73% | 3031 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,716 psi | 72% | 3005 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 44,077 psi | 69% | 2989 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,286 psi | 82% | 3153 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,010 psi | 80% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,831 psi | 70% | 2943 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,505 psi | 56% | 2851 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 50,647 psi | 79% | 3091 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,582 psi | 65% | 2904 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 39,958 psi | 63% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,492 psi | 57% | 2841 fps | 96.5% |
| Vihtavuori N150 | <<locked>> | 80% | 48,544 psi | 76% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,570 psi | 70% | 3005 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 82% | 33,736 psi | 53% | 2759 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 44,034 psi | 69% | 3009 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 35,056 psi | 55% | 2861 fps | 99.3% |
| Vihtavuori N560 | <<locked>> | 86% | 42,438 psi | 67% | 3064 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 90% | 39,726 psi | 62% | 2982 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 98% | 45,948 psi | 72% | 3156 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,758 psi | 69% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,759 psi | 72% | 3077 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,804 psi | 44% | 2785 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,795 psi | 56% | 2818 fps | 95.2% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 81 powders for .375 Chey Tac loaded with the .375 | 220gr | SUS-TAC HP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,360 fps; across all powders the maximum-charge window runs from 2,077 fps to 3,360 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 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 220.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.