Load Specifications
Bullet Manufacturer:Barnes
Bullet Weight:250 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:1:15.0
Load data in caliber 37 XC with .375 | 250gr | Barnes Solid BT bullet and 125 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon H414 and Hodgdon Superformance.
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>> | 82% | 61,061 psi | 88% | 2943 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 61,366 psi | 88% | 2982 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 62,613 psi | 90% | 3054 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 59,030 psi | 85% | 3018 fps | 99.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,823 psi | 76% | 3009 fps | 99.9% |
| Accurate 4064 | <<locked>> | 88% | 61,511 psi | 88% | 3041 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 58,914 psi | 85% | 3117 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 57,841 psi | 83% | 3228 fps | 98.9% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 54,868 psi | 79% | 3163 fps | 97.4% |
| ADI APS 450 | <<locked>> | 84% | 62,381 psi | 90% | 2365 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 60,466 psi | 87% | 3081 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 61,598 psi | 88% | 3084 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 59,901 psi | 86% | 3169 fps | 99.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,809 psi | 77% | 3107 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 62,787 psi | 90% | 3068 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 61,046 psi | 88% | 2972 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 61,728 psi | 89% | 3228 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 59,930 psi | 86% | 3163 fps | 99.5% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 59,930 psi | 86% | 3163 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 62,584 psi | 90% | 3104 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 62,903 psi | 90% | 3133 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 59,437 psi | 85% | 3173 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 61,337 psi | 88% | 3199 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 59,030 psi | 85% | 3156 fps | 99.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,547 psi | 75% | 3107 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,443 psi | 71% | 3028 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,207 psi | 62% | 2963 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,203 psi | 82% | 3235 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 60,771 psi | 87% | 3107 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,080 psi | 69% | 3028 fps | 98.1% |
| Bofors RP3 | <<locked>> | 88% | 59,886 psi | 86% | 3074 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,547 psi | 75% | 3107 fps | 98.9% |
| Bofors RP7 | <<locked>> | 94% | 62,845 psi | 90% | 3117 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 60,162 psi | 86% | 2992 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 59,248 psi | 85% | 3054 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 43,134 psi | 62% | 2890 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 88% | 60,452 psi | 87% | 3100 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 61,279 psi | 88% | 3176 fps | 100% |
| Hodgdon H4350 | <<locked>> | 92% | 60,742 psi | 87% | 3130 fps | 99.6% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,740 psi | 83% | 3107 fps | 97.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,521 psi | 81% | 3087 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 84% | 61,177 psi | 88% | 3091 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 59,857 psi | 86% | 3081 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 61,844 psi | 89% | 3130 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,337 psi | 61% | 2999 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 94% | 62,410 psi | 90% | 3225 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,361 psi | 52% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 62,207 psi | 89% | 3087 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 61,931 psi | 89% | 3054 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 61,046 psi | 88% | 3064 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 60,379 psi | 87% | 3061 fps | 99.9% |
| IMR 4350 | <<locked>> | 96% | 60,075 psi | 86% | 3097 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 60,698 psi | 87% | 3091 fps | 99.9% |
| IMR 4831 | <<locked>> | 96% | 59,176 psi | 85% | 3104 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 60,582 psi | 87% | 3110 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 59,190 psi | 85% | 3091 fps | 98.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,198 psi | 74% | 3077 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 84% | 62,787 psi | 90% | 3068 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 61,177 psi | 88% | 3045 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 62,642 psi | 90% | 3045 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 61,206 psi | 88% | 3054 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 60,829 psi | 87% | 3084 fps | 100% |
| Lovex S070 | <<locked>> | 96% | 62,323 psi | 90% | 3130 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,845 psi | 63% | 2861 fps | 99.2% |
| Norma 201 | <<locked>> | 86% | 62,743 psi | 90% | 3064 fps | 100% |
| Norma 202 | <<locked>> | 84% | 59,799 psi | 86% | 3012 fps | 100% |
| Norma 203B | <<locked>> | 88% | 62,134 psi | 89% | 3120 fps | 100% |
| Norma 204 | <<locked>> | 96% | 61,554 psi | 88% | 3166 fps | 99.5% |
| Norma MRPᴾ | <<locked>> | 100% | 55,840 psi | 80% | 3192 fps | 99.9% |
| Norma URP | <<locked>> | 96% | 61,046 psi | 88% | 3150 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 59,437 psi | 85% | 3097 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,503 psi | 74% | 3091 fps | 98% |
| Ramshot Hunter | <<locked>> | 96% | 60,104 psi | 86% | 3163 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,861 psi | 66% | 2963 fps | 98.4% |
| Ramshot TAC | <<locked>> | 82% | 59,277 psi | 85% | 3061 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 82% | 59,422 psi | 85% | 3071 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,985 psi | 53% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 60,205 psi | 86% | 3084 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 60,394 psi | 87% | 3159 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 60,727 psi | 87% | 3189 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 62,946 psi | 90% | 3196 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 61,453 psi | 88% | 3232 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,177 psi | 61% | 2989 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 82% | 59,756 psi | 86% | 2986 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 59,683 psi | 86% | 3015 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 59,886 psi | 86% | 3068 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 61,743 psi | 89% | 3133 fps | 98.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 58,320 psi | 84% | 3140 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 94% | 62,845 psi | 90% | 3117 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 60,829 psi | 87% | 3084 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 84% | 61,177 psi | 88% | 3045 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 61,206 psi | 88% | 3054 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 62,323 psi | 90% | 3130 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 61,859 psi | 89% | 3136 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 62,337 psi | 90% | 3094 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 62,801 psi | 90% | 3104 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 59,756 psi | 86% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 60,872 psi | 87% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 60,930 psi | 88% | 3038 fps | 99.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,812 psi | 83% | 3136 fps | 99.4% |
| Somchem S335 | <<locked>> | 84% | 59,437 psi | 85% | 2933 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 61,873 psi | 89% | 3071 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 59,770 psi | 86% | 3064 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 59,930 psi | 86% | 3068 fps | 98.1% |
| Somchem S365 | <<locked>> | 98% | 60,655 psi | 87% | 3146 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 59,030 psi | 85% | 3110 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 82% | 62,801 psi | 90% | 2927 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 60,234 psi | 87% | 2910 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 60,060 psi | 86% | 2963 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 60,394 psi | 87% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 61,366 psi | 88% | 3031 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 59,640 psi | 86% | 3087 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,981 psi | 73% | 2972 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 82% | 59,611 psi | 86% | 3018 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 62,468 psi | 90% | 3035 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 62,584 psi | 90% | 3150 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,506 psi | 80% | 3110 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,202 psi | 81% | 3182 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 44,483 psi | 64% | 2963 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 59,582 psi | 86% | 3048 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 60,539 psi | 87% | 3071 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 61,467 psi | 88% | 3179 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,773 psi | 64% | 3097 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 59,205 psi | 85% | 3061 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,550 psi | 80% | 3051 fps | 99% |
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% | 57,377 psi | 82% | 2897 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 50,618 psi | 73% | 2844 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 58,668 psi | 84% | 3005 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,399 psi | 70% | 2854 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 30,530 psi | 44% | 2569 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 47,921 psi | 69% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,405 psi | 52% | 2730 fps | 99% |
| Accurate High Country | <<locked>> | 90% | 40,611 psi | 58% | 2917 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 96% | 47,572 psi | 68% | 3038 fps | 95.8% |
| ADI APS 450 | <<locked>> | 80% | 58,436 psi | 84% | 2310 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 53,388 psi | 77% | 2982 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,266 psi | 65% | 2835 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 37,826 psi | 54% | 2762 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 94% | 43,976 psi | 63% | 2923 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 55,434 psi | 80% | 2972 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 57,232 psi | 82% | 2930 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,879 psi | 72% | 3058 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 37,942 psi | 55% | 2766 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 37,942 psi | 55% | 2766 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,643 psi | 66% | 2858 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,878 psi | 70% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,549 psi | 51% | 2740 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,248 psi | 58% | 2867 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 37,536 psi | 54% | 2759 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 90% | 37,565 psi | 54% | 2808 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,078 psi | 37% | 2497 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 88% | 29,559 psi | 42% | 2612 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 27,615 psi | 40% | 2602 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,098 psi | 76% | 2995 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 37,231 psi | 53% | 2799 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 45,977 psi | 66% | 2871 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 37,565 psi | 54% | 2808 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 40,611 psi | 58% | 2743 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 56,478 psi | 81% | 2943 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 55,405 psi | 80% | 3005 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 40,292 psi | 58% | 2828 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 46,340 psi | 67% | 2884 fps | 99.8% |
| Hodgdon H414 | 88.8 gr | 80% | 38,305 psi | 55% | 2776 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 80% | 41,321 psi | 59% | 2795 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 94% | 47,123 psi | 68% | 2930 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 94% | 46,108 psi | 66% | 2910 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 53,969 psi | 78% | 2989 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,025 psi | 47% | 2628 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,517 psi | 73% | 2972 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 37,144 psi | 53% | 2867 fps | 95.7% |
| Hodgdon Superformance | 96 gr | 80% | 37,405 psi | 54% | 2785 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,137 psi | 39% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,561 psi | 74% | 2940 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,418 psi | 78% | 2959 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,601 psi | 68% | 2864 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,908 psi | 72% | 2897 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 36,274 psi | 52% | 2667 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,930 psi | 60% | 2772 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 35,012 psi | 50% | 2680 fps | 98.7% |
| IMR 4895 | <<locked>> | 80% | 50,154 psi | 72% | 2959 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 46,021 psi | 66% | 2871 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 41,829 psi | 60% | 2890 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 55,434 psi | 80% | 2972 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 53,606 psi | 77% | 2946 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,272 psi | 75% | 2900 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,848 psi | 69% | 2861 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,523 psi | 57% | 2723 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 37,724 psi | 54% | 2703 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 29,675 psi | 43% | 2546 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 52,170 psi | 75% | 2923 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,692 psi | 76% | 2913 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,254 psi | 69% | 2917 fps | 100% |
| Norma 204 | <<locked>> | 82% | 38,130 psi | 55% | 2753 fps | 95.1% |
| Norma MRP | <<locked>> | 86% | 34,403 psi | 49% | 2762 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 36,201 psi | 52% | 2726 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 48,457 psi | 70% | 2936 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 41,495 psi | 60% | 2894 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 35,157 psi | 51% | 2710 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 94% | 36,869 psi | 53% | 2772 fps | 95.9% |
| Ramshot TAC | <<locked>> | 80% | 55,419 psi | 80% | 3005 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 80% | 55,622 psi | 80% | 3015 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,543 psi | 40% | 1719 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,398 psi | 67% | 2864 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,765 psi | 76% | 3048 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,757 psi | 61% | 2920 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,085 psi | 52% | 2749 fps | 98.7% |
| ReloadSwiss RS 70 | 92.2 gr | 80% | 35,201 psi | 51% | 2756 fps | 98.2% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 34,229 psi | 49% | 2782 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 56,217 psi | 81% | 2940 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 49,705 psi | 71% | 2874 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,250 psi | 62% | 2815 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 41,989 psi | 60% | 2802 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 86% | 36,434 psi | 52% | 2740 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 40,611 psi | 58% | 2743 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,523 psi | 57% | 2723 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,606 psi | 77% | 2946 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,848 psi | 69% | 2861 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,724 psi | 54% | 2703 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,396 psi | 64% | 2874 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 54,418 psi | 78% | 2982 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,808 psi | 74% | 2949 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,968 psi | 76% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,744 psi | 64% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,609 psi | 55% | 2661 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 38,638 psi | 56% | 2792 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 52,707 psi | 76% | 2844 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,969 psi | 78% | 2966 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,685 psi | 63% | 2815 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 45,876 psi | 66% | 2841 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 32,706 psi | 47% | 2680 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 34,809 psi | 50% | 2671 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 59,277 psi | 85% | 2887 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 53,505 psi | 77% | 2825 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,908 psi | 72% | 2831 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,009 psi | 72% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,655 psi | 60% | 2740 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,666 psi | 54% | 2720 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 36,622 psi | 53% | 2700 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 55,825 psi | 80% | 2969 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 48,341 psi | 69% | 2844 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,072 psi | 53% | 2723 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 28,529 psi | 41% | 2572 fps | 97.3% |
| Vihtavuori N560 | <<locked>> | 92% | 42,815 psi | 62% | 2936 fps | 95% |
| Vihtavuori N565 | <<locked>> | 98% | 41,510 psi | 60% | 2904 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,840 psi | 53% | 2687 fps | 99.9% |
| Winchester 748 | <<locked>> | 80% | 56,565 psi | 81% | 3018 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 38,406 psi | 55% | 2779 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,032 psi | 33% | 2464 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,880 psi | 75% | 2956 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 39,131 psi | 56% | 2762 fps | 95.7% |
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 125 powders for 37 XC loaded with the .375 | 250gr | Barnes Solid BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,235 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,235 fps. Accurate 3100 gives the best case fill at 100 %, and 125 of the 125 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (480 MPa), the top charges use 52–90 %, 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. Accurate 3100, Accurate High Country, Accurate MAGPRO 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. ReloadSwiss RS 70, Hodgdon H414, Hodgdon Superformance rank at the top here: for 37 XC 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.