Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:256 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 | 256gr | Peregrine VLR-5 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 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% | 61,496 psi | 88% | 2927 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 61,728 psi | 89% | 2966 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 59,814 psi | 86% | 3015 fps | 99.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,650 psi | 77% | 3005 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 62,178 psi | 89% | 3025 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 59,915 psi | 86% | 3110 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 59,292 psi | 85% | 3232 fps | 99.3% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,173 psi | 81% | 3166 fps | 98% |
| ADI APS 450 | <<locked>> | 84% | 62,468 psi | 90% | 2352 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 61,279 psi | 88% | 3071 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 62,598 psi | 90% | 3077 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 61,163 psi | 88% | 3169 fps | 99.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,810 psi | 79% | 3110 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 34,795 psi | 50% | 2753 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 59,770 psi | 86% | 3009 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 61,931 psi | 89% | 2963 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 58,697 psi | 84% | 3166 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 61,148 psi | 88% | 3163 fps | 99.7% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 61,148 psi | 88% | 3163 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 59,640 psi | 86% | 3048 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 59,944 psi | 86% | 3074 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 60,582 psi | 87% | 3166 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 62,743 psi | 90% | 3192 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 60,234 psi | 87% | 3153 fps | 99.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,650 psi | 77% | 3104 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,560 psi | 73% | 3025 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,918 psi | 63% | 2963 fps | 99.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 58,929 psi | 85% | 3235 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 61,772 psi | 89% | 3097 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,037 psi | 70% | 3028 fps | 98.6% |
| Bofors RP3 | <<locked>> | 88% | 60,655 psi | 87% | 3064 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 39,697 psi | 57% | 2874 fps | 95.9% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,650 psi | 77% | 3104 fps | 99.3% |
| Bofors RP7 | <<locked>> | 92% | 59,886 psi | 86% | 3061 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 60,843 psi | 87% | 2979 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 60,191 psi | 86% | 3045 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 43,743 psi | 63% | 2894 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 88% | 61,293 psi | 88% | 3091 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 62,410 psi | 90% | 3173 fps | 100% |
| Hodgdon H4350 | <<locked>> | 92% | 61,888 psi | 89% | 3130 fps | 99.8% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 58,885 psi | 85% | 3107 fps | 98.5% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,624 psi | 83% | 3091 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 84% | 62,018 psi | 89% | 3081 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 61,076 psi | 88% | 3074 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 62,946 psi | 90% | 3120 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,946 psi | 62% | 3002 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 92% | 59,219 psi | 85% | 3163 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,216 psi | 52% | 1864 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 59,408 psi | 85% | 3028 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 62,990 psi | 90% | 3045 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 61,902 psi | 89% | 3054 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 61,148 psi | 88% | 3051 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 61,105 psi | 88% | 3094 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 92% | 61,786 psi | 89% | 3091 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 60,191 psi | 86% | 3094 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 61,540 psi | 88% | 3104 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 60,249 psi | 87% | 3091 fps | 98.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,185 psi | 75% | 3081 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 82% | 59,770 psi | 86% | 3009 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 62,047 psi | 89% | 3035 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 59,814 psi | 86% | 2989 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 61,931 psi | 89% | 3041 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 61,569 psi | 88% | 3074 fps | 100% |
| Lovex S070 | <<locked>> | 94% | 59,495 psi | 85% | 3074 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,324 psi | 64% | 2854 fps | 99.5% |
| Norma 201 | <<locked>> | 84% | 59,669 psi | 86% | 3005 fps | 100% |
| Norma 202 | <<locked>> | 84% | 60,611 psi | 87% | 2999 fps | 100% |
| Norma 203B | <<locked>> | 86% | 59,190 psi | 85% | 3061 fps | 100% |
| Norma 204 | <<locked>> | 96% | 62,598 psi | 90% | 3163 fps | 99.7% |
| Norma MRPᴾ | <<locked>> | 100% | 57,246 psi | 82% | 3192 fps | 100% |
| Norma URP | <<locked>> | 96% | 62,221 psi | 89% | 3143 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 60,568 psi | 87% | 3087 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,446 psi | 75% | 3094 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 96% | 61,134 psi | 88% | 3156 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,717 psi | 67% | 2963 fps | 98.9% |
| Ramshot TAC | <<locked>> | 82% | 59,988 psi | 86% | 3051 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 82% | 60,379 psi | 87% | 3061 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,941 psi | 53% | 1909 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 61,221 psi | 88% | 3077 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 61,540 psi | 88% | 3150 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 62,163 psi | 89% | 3179 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 59,886 psi | 86% | 3133 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 58,494 psi | 84% | 3173 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,917 psi | 62% | 2995 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 82% | 59,973 psi | 86% | 2972 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 60,307 psi | 87% | 3005 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 60,684 psi | 87% | 3058 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 62,729 psi | 90% | 3130 fps | 99.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 59,553 psi | 86% | 3140 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 92% | 59,886 psi | 86% | 3061 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 61,569 psi | 88% | 3074 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 84% | 62,047 psi | 89% | 3035 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 61,931 psi | 89% | 3041 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 59,495 psi | 85% | 3074 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 62,845 psi | 90% | 3123 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 58,856 psi | 85% | 3028 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 59,785 psi | 86% | 3045 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 60,437 psi | 87% | 2923 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 61,670 psi | 89% | 2923 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 61,743 psi | 89% | 3031 fps | 100% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 59,059 psi | 85% | 3133 fps | 99.7% |
| Somchem S335 | <<locked>> | 84% | 60,118 psi | 86% | 2920 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 62,816 psi | 90% | 3061 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 60,423 psi | 87% | 3051 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 60,988 psi | 88% | 3068 fps | 98.6% |
| Somchem S365 | <<locked>> | 98% | 61,888 psi | 89% | 3136 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 60,075 psi | 86% | 3107 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 84% | 61,003 psi | 88% | 2897 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 60,756 psi | 87% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 61,206 psi | 88% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 62,265 psi | 89% | 3018 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 60,785 psi | 87% | 3081 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,938 psi | 75% | 2972 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 82% | 60,278 psi | 87% | 3009 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 59,306 psi | 85% | 2976 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 59,625 psi | 86% | 3091 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,449 psi | 81% | 3100 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,508 psi | 83% | 3182 fps | 98.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 45,368 psi | 65% | 2963 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 60,930 psi | 88% | 3045 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 61,467 psi | 88% | 3061 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 62,613 psi | 90% | 3173 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,672 psi | 66% | 3094 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 60,118 psi | 86% | 3051 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,623 psi | 81% | 3051 fps | 99.4% |
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% | 57,812 psi | 83% | 2884 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 50,560 psi | 73% | 2825 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,950 psi | 70% | 2848 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 28,471 psi | 41% | 2500 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 47,950 psi | 69% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,593 psi | 53% | 2720 fps | 99.2% |
| Accurate High Country | <<locked>> | 88% | 38,464 psi | 55% | 2851 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 94% | 45,150 psi | 65% | 2976 fps | 95.6% |
| ADI APS 450 | <<locked>> | 80% | 58,421 psi | 84% | 2297 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 53,983 psi | 78% | 2969 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,803 psi | 66% | 2825 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 38,334 psi | 55% | 2762 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 41,713 psi | 60% | 2864 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 98% | 32,634 psi | 47% | 2694 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 56,101 psi | 81% | 2963 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 58,073 psi | 83% | 2917 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,763 psi | 73% | 3051 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 35,955 psi | 52% | 2707 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 35,955 psi | 52% | 2707 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,137 psi | 66% | 2848 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,414 psi | 71% | 2920 fps | 100% |
| Alliant Reloder-16 | 85.9 gr | 80% | 35,926 psi | 52% | 2736 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,799 psi | 59% | 2858 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 35,592 psi | 51% | 2700 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 88% | 35,549 psi | 51% | 2746 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,976 psi | 37% | 2484 fps | 97.7% |
| Alliant Reloder-25 | <<locked>> | 86% | 27,847 psi | 40% | 2549 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 27,731 psi | 40% | 2595 fps | 96.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,983 psi | 78% | 2989 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 37,623 psi | 54% | 2795 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 46,311 psi | 67% | 2858 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 37,101 psi | 53% | 2815 fps | 95% |
| Bofors RP5 | <<locked>> | 88% | 35,549 psi | 51% | 2746 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 40,785 psi | 59% | 2733 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 57,174 psi | 82% | 2933 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 56,101 psi | 81% | 2992 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 38,029 psi | 55% | 2766 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 46,847 psi | 67% | 2874 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 38,812 psi | 56% | 2772 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 41,756 psi | 60% | 2789 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 92% | 44,585 psi | 64% | 2867 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 43,801 psi | 63% | 2854 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 54,578 psi | 78% | 2979 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,344 psi | 48% | 2618 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,329 psi | 74% | 2963 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 35,288 psi | 51% | 2808 fps | 95.5% |
| Hodgdon Superformance | 97.7 gr | 80% | 37,724 psi | 54% | 2782 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,021 psi | 39% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,228 psi | 75% | 2930 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 55,259 psi | 79% | 2946 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,153 psi | 69% | 2858 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,415 psi | 72% | 2890 fps | 99.5% |
| IMR 4350 | <<locked>> | 80% | 36,579 psi | 53% | 2661 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,351 psi | 61% | 2769 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 35,244 psi | 51% | 2671 fps | 99% |
| IMR 4895 | <<locked>> | 80% | 50,705 psi | 73% | 2949 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 43,714 psi | 63% | 2812 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 94% | 42,453 psi | 61% | 2894 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 56,101 psi | 81% | 2963 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 54,099 psi | 78% | 2933 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,881 psi | 76% | 2890 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,269 psi | 69% | 2848 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,653 psi | 57% | 2713 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 37,898 psi | 54% | 2697 fps | 97.6% |
| Lovex S071 | <<locked>> | 88% | 29,718 psi | 43% | 2533 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 52,460 psi | 75% | 2907 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,272 psi | 77% | 2900 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,776 psi | 70% | 2907 fps | 100% |
| Norma 204 | <<locked>> | 82% | 38,551 psi | 55% | 2749 fps | 95.8% |
| Norma MRP | <<locked>> | 84% | 32,358 psi | 46% | 2697 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 36,550 psi | 53% | 2717 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 80% | 49,168 psi | 71% | 2927 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 39,247 psi | 56% | 2831 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 35,433 psi | 51% | 2703 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 34,708 psi | 50% | 2707 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 56,246 psi | 81% | 2999 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 80% | 56,362 psi | 81% | 3005 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,499 psi | 40% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,905 psi | 67% | 2858 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,490 psi | 77% | 3038 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,439 psi | 62% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,463 psi | 52% | 2740 fps | 99% |
| ReloadSwiss RS 70 | 93.9 gr | 80% | 35,505 psi | 51% | 2749 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 32,242 psi | 46% | 2717 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 56,565 psi | 81% | 2927 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 49,966 psi | 72% | 2861 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,555 psi | 63% | 2802 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 39,755 psi | 57% | 2740 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 36,941 psi | 53% | 2736 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 40,785 psi | 59% | 2733 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,653 psi | 57% | 2713 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 54,099 psi | 78% | 2933 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,269 psi | 69% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,898 psi | 54% | 2697 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,904 psi | 65% | 2861 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 55,013 psi | 79% | 2972 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,388 psi | 75% | 2940 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,447 psi | 77% | 2831 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,136 psi | 65% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,914 psi | 56% | 2654 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 36,637 psi | 53% | 2733 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 53,055 psi | 76% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 54,868 psi | 79% | 2956 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,888 psi | 63% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 43,482 psi | 62% | 2782 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 32,982 psi | 47% | 2671 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 32,677 psi | 47% | 2602 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 54,070 psi | 78% | 2812 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,343 psi | 72% | 2815 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,604 psi | 73% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,003 psi | 60% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,014 psi | 55% | 2713 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 34,606 psi | 50% | 2638 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 56,478 psi | 81% | 2956 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 48,878 psi | 70% | 2831 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,420 psi | 54% | 2717 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 28,514 psi | 41% | 2556 fps | 97.7% |
| Vihtavuori N560 | <<locked>> | 92% | 43,468 psi | 62% | 2933 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 98% | 42,221 psi | 61% | 2900 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,260 psi | 54% | 2680 fps | 100% |
| Winchester 748 | <<locked>> | 80% | 57,464 psi | 83% | 3009 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 38,914 psi | 56% | 2776 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 22,829 psi | 33% | 2454 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,576 psi | 76% | 2949 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 36,956 psi | 53% | 2700 fps | 95.5% |
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 .376 | 256gr | Peregrine VLR-5. Alliant Reloder-26 delivers the highest muzzle velocity at 3,235 fps; across all powders the maximum-charge window runs from 1,864 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 50–90 %, leaving at least 10 % headroom. The 256.0 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 | 256gr | Peregrine VLR-5 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.