Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:250 gr
Bullet Diameter:0.376"
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:1:16.0
Load data in caliber 37 XC with .376 | 250gr | Peregrine VLR-4 bullet and 124 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 Superformance and Alliant Reloder-16.
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% | 60,582 psi | 87% | 2953 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 60,640 psi | 87% | 2989 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 62,439 psi | 90% | 3064 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 62,946 psi | 90% | 3087 fps | 99.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,475 psi | 75% | 3018 fps | 99.9% |
| Accurate 4064 | <<locked>> | 88% | 61,076 psi | 88% | 3048 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 62,932 psi | 90% | 3182 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 57,957 psi | 83% | 3241 fps | 99% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 54,897 psi | 79% | 3176 fps | 97.6% |
| ADI APS 450 | <<locked>> | 84% | 62,410 psi | 90% | 2379 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 60,336 psi | 87% | 3094 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 61,641 psi | 89% | 3097 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 60,002 psi | 86% | 3182 fps | 99.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,751 psi | 77% | 3120 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 62,729 psi | 90% | 3081 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 60,887 psi | 87% | 2982 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 61,975 psi | 89% | 3245 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 59,988 psi | 86% | 3179 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 62,526 psi | 90% | 3117 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 62,845 psi | 90% | 3146 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 59,408 psi | 85% | 3182 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 61,438 psi | 88% | 3209 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 59,088 psi | 85% | 3169 fps | 99.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,475 psi | 75% | 3117 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,429 psi | 71% | 3041 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,004 psi | 62% | 2972 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,435 psi | 83% | 3248 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 60,756 psi | 87% | 3117 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,979 psi | 69% | 3038 fps | 98.3% |
| Bofors RP3 | <<locked>> | 88% | 59,567 psi | 86% | 3084 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,475 psi | 75% | 3117 fps | 99% |
| Bofors RP7 | <<locked>> | 94% | 62,845 psi | 90% | 3133 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 60,002 psi | 86% | 3002 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 59,176 psi | 85% | 3068 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 42,888 psi | 62% | 2900 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 88% | 60,249 psi | 87% | 3110 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 61,235 psi | 88% | 3189 fps | 100% |
| Hodgdon H4350 | <<locked>> | 92% | 60,843 psi | 87% | 3146 fps | 99.7% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,754 psi | 83% | 3120 fps | 98.1% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,521 psi | 81% | 3100 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 84% | 61,046 psi | 88% | 3100 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 59,872 psi | 86% | 3094 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 61,844 psi | 89% | 3143 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,047 psi | 60% | 3009 fps | 97.8% |
| Hodgdon Superformance | <<locked>> | 94% | 62,497 psi | 90% | 3238 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,129 psi | 52% | 1883 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 62,323 psi | 90% | 3100 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 61,917 psi | 89% | 3068 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 60,930 psi | 88% | 3074 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 60,249 psi | 87% | 3071 fps | 99.9% |
| IMR 4350 | <<locked>> | 96% | 60,060 psi | 86% | 3110 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 60,843 psi | 87% | 3107 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 59,030 psi | 85% | 3114 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 60,524 psi | 87% | 3123 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 59,234 psi | 85% | 3104 fps | 98.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,140 psi | 73% | 3091 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 84% | 62,729 psi | 90% | 3081 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 60,974 psi | 88% | 3054 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 62,598 psi | 90% | 3054 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 60,945 psi | 88% | 3061 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 60,568 psi | 87% | 3094 fps | 100% |
| Lovex S070 | <<locked>> | 96% | 62,134 psi | 89% | 3143 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,323 psi | 62% | 2867 fps | 99.2% |
| Norma 201 | <<locked>> | 86% | 62,468 psi | 90% | 3074 fps | 100% |
| Norma 202 | <<locked>> | 84% | 59,669 psi | 86% | 3022 fps | 100% |
| Norma 203B | <<locked>> | 88% | 62,076 psi | 89% | 3130 fps | 100% |
| Norma 204 | <<locked>> | 96% | 61,453 psi | 88% | 3176 fps | 99.6% |
| Norma MRPᴾ | <<locked>> | 100% | 55,941 psi | 80% | 3205 fps | 99.9% |
| Norma URP | <<locked>> | 96% | 61,046 psi | 88% | 3163 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 59,480 psi | 85% | 3107 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,329 psi | 74% | 3100 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 96% | 59,959 psi | 86% | 3173 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,672 psi | 66% | 2972 fps | 98.5% |
| Ramshot TAC | <<locked>> | 82% | 59,074 psi | 85% | 3071 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 82% | 59,408 psi | 85% | 3081 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,840 psi | 53% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 60,234 psi | 87% | 3094 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 60,394 psi | 87% | 3169 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 60,872 psi | 87% | 3199 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 58,653 psi | 84% | 3153 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 61,714 psi | 89% | 3248 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,989 psi | 60% | 2999 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 84% | 62,758 psi | 90% | 3041 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 59,379 psi | 85% | 3025 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 59,596 psi | 86% | 3077 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 61,627 psi | 89% | 3146 fps | 99% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 58,363 psi | 84% | 3153 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 94% | 62,845 psi | 90% | 3133 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 60,568 psi | 87% | 3094 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 84% | 60,974 psi | 88% | 3054 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 60,945 psi | 88% | 3061 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 62,134 psi | 89% | 3143 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 61,728 psi | 89% | 3143 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 62,120 psi | 89% | 3104 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 62,801 psi | 90% | 3117 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 59,582 psi | 86% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 60,742 psi | 87% | 2943 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 60,756 psi | 87% | 3048 fps | 100% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,856 psi | 83% | 3150 fps | 99.5% |
| Somchem S335 | <<locked>> | 86% | 62,874 psi | 90% | 2986 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 61,786 psi | 89% | 3081 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 59,408 psi | 85% | 3071 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 59,915 psi | 86% | 3081 fps | 98.3% |
| Somchem S365 | <<locked>> | 98% | 60,553 psi | 87% | 3156 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 58,914 psi | 85% | 3120 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 82% | 62,729 psi | 90% | 2940 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 60,118 psi | 86% | 2920 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 59,756 psi | 86% | 2972 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 60,249 psi | 87% | 2992 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 61,221 psi | 88% | 3041 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 59,669 psi | 86% | 3100 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,865 psi | 73% | 2982 fps | 99% |
| Vihtavuori N530 | <<locked>> | 82% | 59,350 psi | 85% | 3028 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 62,308 psi | 90% | 3045 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 62,584 psi | 90% | 3163 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,216 psi | 79% | 3114 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,289 psi | 81% | 3196 fps | 98.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 44,280 psi | 64% | 2972 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 59,785 psi | 86% | 3061 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 60,423 psi | 87% | 3084 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 61,453 psi | 88% | 3192 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,599 psi | 64% | 3107 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 59,117 psi | 85% | 3071 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,477 psi | 80% | 3064 fps | 99.1% |
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% | 56,942 psi | 82% | 2907 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 49,647 psi | 71% | 2844 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 58,349 psi | 84% | 3015 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,167 psi | 69% | 2864 fps | 98.6% |
| Accurate 3100 | <<locked>> | 84% | 29,863 psi | 43% | 2562 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 47,065 psi | 68% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,795 psi | 51% | 2730 fps | 98.9% |
| Accurate High Country | <<locked>> | 90% | 40,393 psi | 58% | 2923 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 94% | 44,135 psi | 63% | 2982 fps | 95% |
| ADI APS 450 | <<locked>> | 80% | 58,363 psi | 84% | 2320 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 53,127 psi | 76% | 2992 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,078 psi | 65% | 2844 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 37,623 psi | 54% | 2772 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 94% | 43,743 psi | 63% | 2933 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 55,245 psi | 79% | 2982 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 57,072 psi | 82% | 2936 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,763 psi | 71% | 3068 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 37,695 psi | 54% | 2776 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,339 psi | 65% | 2864 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,573 psi | 70% | 2940 fps | 100% |
| Alliant Reloder-16 | 85.9 gr | 80% | 35,259 psi | 51% | 2749 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,958 psi | 57% | 2874 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 37,289 psi | 54% | 2766 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 90% | 37,318 psi | 54% | 2818 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,440 psi | 37% | 2487 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 29,138 psi | 42% | 2615 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 27,108 psi | 39% | 2598 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,069 psi | 76% | 3009 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 36,825 psi | 53% | 2802 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 45,440 psi | 65% | 2874 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 37,318 psi | 54% | 2818 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 40,103 psi | 58% | 2746 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 56,376 psi | 81% | 2956 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 55,143 psi | 79% | 3012 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 40,030 psi | 57% | 2838 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 46,021 psi | 66% | 2890 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 38,029 psi | 55% | 2782 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 80% | 41,017 psi | 59% | 2802 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 92% | 43,743 psi | 63% | 2877 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 45,948 psi | 66% | 2923 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 53,708 psi | 77% | 2999 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,648 psi | 47% | 2631 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,401 psi | 72% | 2982 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 36,883 psi | 53% | 2874 fps | 95.8% |
| Hodgdon Superformance | 97.7 gr | 80% | 36,970 psi | 53% | 2789 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 39% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,401 psi | 74% | 2949 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,302 psi | 78% | 2969 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,384 psi | 68% | 2874 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,661 psi | 71% | 2907 fps | 99.3% |
| IMR 4350 | <<locked>> | 80% | 35,926 psi | 52% | 2674 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,669 psi | 60% | 2782 fps | 97.9% |
| IMR 4831 | <<locked>> | 80% | 34,519 psi | 50% | 2684 fps | 98.7% |
| IMR 4895 | <<locked>> | 80% | 49,835 psi | 72% | 2966 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 42,946 psi | 62% | 2825 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 41,626 psi | 60% | 2904 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 55,245 psi | 79% | 2982 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 53,142 psi | 76% | 2953 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,127 psi | 75% | 2910 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,471 psi | 68% | 2867 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,972 psi | 56% | 2726 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 37,202 psi | 53% | 2707 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 29,008 psi | 42% | 2539 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 51,634 psi | 74% | 2927 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,417 psi | 75% | 2923 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,950 psi | 69% | 2923 fps | 100% |
| Norma 204 | <<locked>> | 82% | 37,811 psi | 54% | 2756 fps | 95.2% |
| Norma MRP | <<locked>> | 86% | 33,968 psi | 49% | 2766 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 35,810 psi | 51% | 2730 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 48,269 psi | 69% | 2943 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 41,278 psi | 59% | 2904 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 34,722 psi | 50% | 2713 fps | 97.2% |
| Ramshot Magnum | <<locked>> | 94% | 36,506 psi | 52% | 2776 fps | 96% |
| Ramshot TAC | <<locked>> | 80% | 55,390 psi | 80% | 3015 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 80% | 55,448 psi | 80% | 3025 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 39% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,122 psi | 66% | 2871 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,475 psi | 75% | 3058 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,554 psi | 61% | 2927 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,650 psi | 51% | 2749 fps | 98.7% |
| ReloadSwiss RS 70 | 93.9 gr | 80% | 34,809 psi | 50% | 2759 fps | 98.3% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 33,866 psi | 49% | 2789 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 55,724 psi | 80% | 2949 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 49,168 psi | 71% | 2881 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,728 psi | 61% | 2818 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 41,713 psi | 60% | 2808 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 86% | 36,158 psi | 52% | 2746 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 40,103 psi | 58% | 2746 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,972 psi | 56% | 2726 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,142 psi | 76% | 2953 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,471 psi | 68% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,202 psi | 53% | 2707 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,063 psi | 63% | 2877 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 54,099 psi | 78% | 2992 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,532 psi | 74% | 2959 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,678 psi | 76% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,411 psi | 64% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,261 psi | 55% | 2667 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 35,853 psi | 52% | 2740 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 52,272 psi | 75% | 2851 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,954 psi | 78% | 2976 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,120 psi | 62% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 45,759 psi | 66% | 2854 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 32,227 psi | 46% | 2684 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 34,345 psi | 49% | 2671 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 59,016 psi | 85% | 2894 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 53,272 psi | 77% | 2835 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,472 psi | 71% | 2838 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,777 psi | 72% | 2851 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,249 psi | 59% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,275 psi | 54% | 2726 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 36,260 psi | 52% | 2703 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 55,593 psi | 80% | 2979 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 48,080 psi | 69% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,680 psi | 53% | 2726 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 27,804 psi | 40% | 2562 fps | 97.1% |
| Vihtavuori N560 | <<locked>> | 92% | 42,569 psi | 61% | 2943 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 98% | 41,191 psi | 59% | 2910 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,579 psi | 53% | 2694 fps | 99.9% |
| Winchester 748 | <<locked>> | 80% | 56,478 psi | 81% | 3031 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 38,145 psi | 55% | 2785 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 22,350 psi | 32% | 2451 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,677 psi | 74% | 2966 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 38,769 psi | 56% | 2766 fps | 95.8% |
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 124 powders for 37 XC loaded with the .376 | 250gr | Peregrine VLR-4. Alliant Reloder-26 delivers the highest muzzle velocity at 3,248 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,248 fps. Accurate 3100 gives the best case fill at 100 %, and 124 of the 124 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 0.376" calls for a 1:16.0 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 Superformance, Alliant Reloder-16 rank at the top here: for 37 XC with the .376 | 250gr | Peregrine VLR-4 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.