Load Specifications
Bullet:.375 | 200gr | MAKER TREX
Bullet Manufacturer:MAKER
Bullet Weight:200 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:37 XC load data
Case Length (l3):3.087"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:139.8 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:30"
Max. allowed Pressure:69,618 psi
Recommended Twist Rate:1:6.0
Load data in caliber 37 XC with .375 | 200gr | MAKER TREX bullet and 119 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Alliant Reloder-17 and ReloadSwiss RS 60.
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: 30"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 62,845 psi | 90% | 3323 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 61,656 psi | 89% | 3363 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 62,294 psi | 89% | 3350 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 60,423 psi | 87% | 3383 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 61,438 psi | 88% | 3379 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,151 psi | 66% | 3209 fps | 98.3% |
| Accurate 4064 | <<locked>> | 92% | 62,424 psi | 90% | 3409 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 60,017 psi | 86% | 3474 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 50,894 psi | 73% | 3432 fps | 96.1% |
| ADI APS 450 | <<locked>> | 84% | 62,018 psi | 89% | 2661 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 62,482 psi | 90% | 3465 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 59,843 psi | 86% | 3406 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,041 psi | 78% | 3396 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 61,017 psi | 88% | 3399 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 62,801 psi | 90% | 3356 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 59,480 psi | 85% | 3556 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,766 psi | 77% | 3389 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 60,278 psi | 87% | 3428 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 61,902 psi | 89% | 3330 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 60,756 psi | 87% | 3458 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 60,582 psi | 87% | 3540 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 58,740 psi | 84% | 3517 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,968 psi | 76% | 3379 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,543 psi | 67% | 3304 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,671 psi | 63% | 3248 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,305 psi | 55% | 3133 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,024 psi | 72% | 3451 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 59,045 psi | 85% | 3425 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 61,424 psi | 88% | 3445 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,543 psi | 67% | 3304 fps | 96.1% |
| Bofors RP7 | <<locked>> | 96% | 61,061 psi | 88% | 3425 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 62,439 psi | 90% | 3373 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 61,424 psi | 88% | 3435 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 59,727 psi | 86% | 3501 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 61,815 psi | 89% | 3389 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 62,352 psi | 90% | 3471 fps | 100% |
| Hodgdon H414 | <<locked>> | 98% | 62,859 psi | 90% | 3537 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 96% | 62,671 psi | 90% | 3491 fps | 98.9% |
| Hodgdon H4895 | <<locked>> | 86% | 59,132 psi | 85% | 3415 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,029 psi | 82% | 3386 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 59,669 psi | 86% | 3455 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 59,959 psi | 86% | 3524 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,621 psi | 51% | 2113 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 60,539 psi | 87% | 3419 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 59,640 psi | 86% | 3389 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 59,176 psi | 85% | 3386 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 62,787 psi | 90% | 3428 fps | 99.5% |
| IMR 4198 | <<locked>> | 82% | 61,366 psi | 88% | 3281 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 61,989 psi | 89% | 3455 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 59,190 psi | 85% | 3402 fps | 99.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 60,263 psi | 87% | 3458 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 62,366 psi | 90% | 3491 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 61,017 psi | 88% | 3399 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 61,554 psi | 88% | 3376 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 58,842 psi | 85% | 3369 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 61,293 psi | 88% | 3373 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 62,859 psi | 90% | 3428 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 62,526 psi | 90% | 3445 fps | 99.9% |
| Lovex S070 | <<locked>> | 98% | 60,017 psi | 86% | 3432 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,884 psi | 54% | 3035 fps | 96.3% |
| Norma 201 | <<locked>> | 88% | 60,669 psi | 87% | 3392 fps | 100% |
| Norma 202 | <<locked>> | 88% | 61,641 psi | 89% | 3389 fps | 100% |
| Norma 203B | <<locked>> | 90% | 59,930 psi | 86% | 3442 fps | 100% |
| Norma 204 | <<locked>> | 98% | 59,335 psi | 85% | 3458 fps | 98.2% |
| Norma MRPᴾ | <<locked>> | 100% | 49,371 psi | 71% | 3399 fps | 98.2% |
| Norma URPᴾ | <<locked>> | 100% | 62,540 psi | 90% | 3517 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 61,496 psi | 88% | 3471 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 61,598 psi | 88% | 3520 fps | 99.9% |
| Ramshot TAC | <<locked>> | 86% | 61,859 psi | 89% | 3435 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 61,786 psi | 89% | 3451 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 62,134 psi | 89% | 3402 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,042 psi | 52% | 2162 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 60,234 psi | 87% | 3373 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 62,555 psi | 90% | 3448 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 62,149 psi | 89% | 3543 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 62,569 psi | 90% | 3573 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 60,031 psi | 86% | 3501 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 59,190 psi | 85% | 3540 fps | 100% |
| Rottweil R 901 | <<locked>> | 86% | 61,090 psi | 88% | 3363 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 61,192 psi | 88% | 3389 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 61,264 psi | 88% | 3435 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,651 psi | 80% | 3356 fps | 96.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,808 psi | 74% | 3356 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 96% | 61,061 psi | 88% | 3425 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 62,526 psi | 90% | 3445 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 58,842 psi | 85% | 3369 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 62,859 psi | 90% | 3428 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 60,017 psi | 86% | 3432 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 59,611 psi | 86% | 3455 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 60,568 psi | 87% | 3409 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 60,974 psi | 88% | 3428 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 62,091 psi | 89% | 3314 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 62,888 psi | 90% | 3304 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 59,161 psi | 85% | 3337 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,329 psi | 74% | 3350 fps | 97.2% |
| Somchem S321 | <<locked>> | 82% | 58,958 psi | 85% | 3383 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 61,337 psi | 88% | 3304 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 60,191 psi | 86% | 3392 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 61,134 psi | 88% | 3432 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 58,131 psi | 84% | 3346 fps | 96.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,276 psi | 82% | 3455 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,663 psi | 76% | 3330 fps | 98.2% |
| Vihtavuori N130 | <<locked>> | 84% | 61,366 psi | 88% | 3264 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 62,381 psi | 90% | 3287 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 61,424 psi | 88% | 3337 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 62,482 psi | 90% | 3360 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 59,161 psi | 85% | 3346 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 61,279 psi | 88% | 3448 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,194 psi | 65% | 3169 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 86% | 61,888 psi | 89% | 3399 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 60,611 psi | 87% | 3360 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 60,133 psi | 86% | 3458 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,544 psi | 70% | 3330 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 62,018 psi | 89% | 3412 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 62,584 psi | 90% | 3455 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 59,016 psi | 85% | 3481 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,218 psi | 56% | 3281 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 61,438 psi | 88% | 3438 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,458 psi | 71% | 3258 fps | 96.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 30"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 51,953 psi | 75% | 3173 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 57,464 psi | 83% | 3304 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,425 psi | 64% | 3087 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,547 psi | 75% | 3268 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,743 psi | 63% | 3068 fps | 95.7% |
| Accurate 3100 | <<locked>> | 92% | 34,606 psi | 50% | 2956 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 42,032 psi | 60% | 3087 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,140 psi | 45% | 2894 fps | 95.6% |
| Accurate High Country | <<locked>> | 98% | 47,181 psi | 68% | 3360 fps | 95.1% |
| ADI APS 450 | <<locked>> | 80% | 57,885 psi | 83% | 2595 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 48,124 psi | 69% | 3232 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 40,857 psi | 59% | 3061 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 47,152 psi | 68% | 3261 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,270 psi | 72% | 3232 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,271 psi | 74% | 3205 fps | 100% |
| Alliant Power Pro 2000-MR | 99.5 gr | 80% | 44,425 psi | 64% | 3284 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 44,019 psi | 63% | 3196 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,698 psi | 58% | 3084 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 58,175 psi | 84% | 3281 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,685 psi | 63% | 3159 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,473 psi | 45% | 2917 fps | 95.7% |
| Alliant Reloder-17 | 98 gr | 80% | 35,447 psi | 51% | 3061 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,325 psi | 67% | 3251 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,381 psi | 62% | 3235 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,514 psi | 40% | 2808 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,576 psi | 48% | 2999 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 88% | 31,865 psi | 46% | 3005 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,877 psi | 69% | 3238 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 40,625 psi | 58% | 3091 fps | 99.7% |
| Bofors RP5 | <<locked>> | 98% | 43,381 psi | 62% | 3235 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 41,336 psi | 59% | 3058 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,808 psi | 74% | 3215 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,748 psi | 71% | 3258 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 55,593 psi | 80% | 3438 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 57,740 psi | 83% | 3330 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,379 psi | 59% | 3097 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 38,812 psi | 56% | 3087 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 45,049 psi | 65% | 3179 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 48,602 psi | 70% | 3241 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,863 psi | 41% | 2795 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,078 psi | 65% | 3212 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 41,263 psi | 59% | 3166 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 38% | 1896 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,659 psi | 67% | 3189 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 48,733 psi | 70% | 3228 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,917 psi | 62% | 3100 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,484 psi | 65% | 3127 fps | 97% |
| IMR 4198 | <<locked>> | 80% | 57,841 psi | 83% | 3232 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 41,930 psi | 60% | 3091 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,335 psi | 58% | 3038 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 30,327 psi | 44% | 2848 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 44,788 psi | 64% | 3196 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 50,270 psi | 72% | 3232 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 57,421 psi | 82% | 3320 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,819 psi | 69% | 3199 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,761 psi | 69% | 3156 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 42,844 psi | 62% | 3100 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,128 psi | 50% | 2917 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 38,014 psi | 55% | 3009 fps | 95.2% |
| Lovex S071 | <<locked>> | 98% | 35,346 psi | 51% | 2976 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 46,920 psi | 67% | 3173 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,529 psi | 68% | 3176 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,047 psi | 62% | 3146 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 44,686 psi | 64% | 3192 fps | 95% |
| Norma MRP | <<locked>> | 94% | 39,856 psi | 57% | 3189 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 31,589 psi | 45% | 2900 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 43,149 psi | 62% | 3163 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 35,476 psi | 51% | 3009 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 50,415 psi | 72% | 3248 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,256 psi | 72% | 3268 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 54,346 psi | 78% | 3287 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,774 psi | 38% | 1942 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 56,507 psi | 81% | 3320 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,713 psi | 60% | 3074 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,818 psi | 67% | 3287 fps | 99.7% |
| ReloadSwiss RS 60 | 98 gr | 80% | 37,753 psi | 54% | 3136 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,140 psi | 45% | 2910 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 33,344 psi | 48% | 2982 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 50,836 psi | 73% | 3212 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,628 psi | 64% | 3117 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,043 psi | 55% | 3025 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 96% | 48,762 psi | 70% | 3232 fps | 95% |
| Rottweil R 905 | <<locked>> | 96% | 45,121 psi | 65% | 3228 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 41,336 psi | 59% | 3058 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,128 psi | 50% | 2917 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,819 psi | 69% | 3199 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,844 psi | 62% | 3100 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 38,014 psi | 55% | 3009 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,407 psi | 57% | 3087 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,834 psi | 70% | 3219 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,804 psi | 67% | 3196 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,225 psi | 69% | 3110 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,321 psi | 58% | 2956 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,407 psi | 57% | 2969 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,686 psi | 64% | 3222 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 54,911 psi | 79% | 3320 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,834 psi | 69% | 3104 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,675 psi | 70% | 3212 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 38,769 psi | 56% | 3031 fps | 99.2% |
| Somchem S361 | <<locked>> | 98% | 54,186 psi | 78% | 3281 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 28,239 psi | 41% | 2841 fps | 97.8% |
| Somchem S385 | <<locked>> | 92% | 39,929 psi | 57% | 3077 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 54,288 psi | 78% | 3169 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,689 psi | 70% | 3094 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,498 psi | 64% | 3087 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,034 psi | 65% | 3097 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,956 psi | 53% | 2956 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 32,982 psi | 47% | 2904 fps | 96.1% |
| Vihtavuori N165 | <<locked>> | 98% | 42,250 psi | 61% | 3107 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 50,647 psi | 73% | 3232 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,555 psi | 63% | 3087 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,576 psi | 47% | 2904 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 86% | 29,762 psi | 43% | 2894 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,764 psi | 47% | 2871 fps | 98.3% |
| Winchester 748 | <<locked>> | 80% | 50,865 psi | 73% | 3281 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 38,899 psi | 56% | 3091 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 88% | 25,904 psi | 37% | 2825 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,543 psi | 67% | 3199 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 45,977 psi | 66% | 3192 fps | 95.6% |
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 119 powders for 37 XC loaded with the .375 | 200gr | MAKER TREX. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,573 fps; across all powders the maximum-charge window runs from 2,113 fps to 3,573 fps. Accurate 3100 gives the best case fill at 100 %, and 119 of the 119 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (480 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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. Alliant Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 37 XC with the .375 | 200gr | MAKER TREX 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.