Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:270 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:1:6.0
Load data in caliber 37 XC with .376 | 270gr | Peregrine Bushmaster (VRG-3) bullet and 114 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Alliant Reloder-26 and ReloadSwiss RS 70.
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 2495 | <<locked>> | 84% | 61,989 psi | 89% | 2900 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 59,596 psi | 86% | 2956 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 58,610 psi | 84% | 3009 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 62,511 psi | 90% | 2963 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 60,582 psi | 87% | 3051 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 60,466 psi | 87% | 3186 fps | 99.7% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 61,728 psi | 89% | 3189 fps | 99.3% |
| ADI APS 450 | <<locked>> | 84% | 62,685 psi | 90% | 2316 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 61,163 psi | 88% | 3005 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 62,584 psi | 90% | 3012 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 61,699 psi | 89% | 3117 fps | 100% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 59,437 psi | 85% | 3127 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 42,989 psi | 62% | 2831 fps | 97.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,811 psi | 54% | 2792 fps | 98.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 59,045 psi | 85% | 3100 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 61,931 psi | 89% | 3114 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 59,799 psi | 86% | 2982 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 59,944 psi | 86% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 61,467 psi | 88% | 3107 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 59,248 psi | 85% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 60,988 psi | 88% | 3104 fps | 99.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 58,668 psi | 84% | 3120 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,550 psi | 80% | 3025 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,906 psi | 69% | 2979 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 98% | 60,423 psi | 87% | 3182 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 61,728 psi | 89% | 3031 fps | 100% |
| Baschieri & Pellagri 109ᴾ | <<locked>> | 100% | 57,972 psi | 83% | 3025 fps | 97.2% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,606 psi | 77% | 3045 fps | 99.6% |
| Bofors RP3 | <<locked>> | 86% | 61,032 psi | 88% | 3002 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,656 psi | 63% | 2907 fps | 97.9% |
| Bofors RP5ᴾ | <<locked>> | 100% | 58,668 psi | 84% | 3120 fps | 99.9% |
| Bofors RP7 | <<locked>> | 90% | 60,017 psi | 86% | 3005 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,340 psi | 68% | 2920 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 86% | 61,279 psi | 88% | 3028 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 62,990 psi | 90% | 3117 fps | 100% |
| Hodgdon H4350 | <<locked>> | 90% | 62,105 psi | 89% | 3074 fps | 100% |
| Hodgdon H4831 | <<locked>> | 98% | 59,509 psi | 85% | 3061 fps | 99.1% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 62,395 psi | 90% | 3100 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 82% | 61,931 psi | 89% | 3012 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 61,757 psi | 89% | 3015 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 58,972 psi | 85% | 3002 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,847 psi | 67% | 3035 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 90% | 59,843 psi | 86% | 3107 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,579 psi | 53% | 1834 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 59,234 psi | 85% | 2963 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 61,844 psi | 89% | 2989 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 60,858 psi | 87% | 2989 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 61,424 psi | 88% | 3041 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 90% | 61,641 psi | 89% | 3028 fps | 100% |
| IMR 4831 | <<locked>> | 94% | 60,858 psi | 87% | 3038 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 61,554 psi | 88% | 3035 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 60,466 psi | 87% | 3038 fps | 99.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,637 psi | 81% | 3100 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 82% | 62,105 psi | 89% | 2969 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 59,350 psi | 85% | 2920 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 62,149 psi | 89% | 2979 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 61,946 psi | 89% | 3018 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 59,785 psi | 86% | 3018 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,472 psi | 70% | 2867 fps | 100% |
| Norma 201 | <<locked>> | 82% | 59,408 psi | 85% | 2940 fps | 100% |
| Norma 202 | <<locked>> | 82% | 60,539 psi | 87% | 2933 fps | 100% |
| Norma 203B | <<locked>> | 84% | 59,234 psi | 85% | 2995 fps | 100% |
| Norma 204 | <<locked>> | 92% | 58,813 psi | 84% | 3051 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 33,214 psi | 48% | 2710 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 62,932 psi | 90% | 3202 fps | 100% |
| Norma URP | <<locked>> | 94% | 62,859 psi | 90% | 3087 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 60,713 psi | 87% | 3025 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,508 psi | 83% | 3120 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 94% | 61,888 psi | 89% | 3100 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,285 psi | 74% | 2986 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,217 psi | 53% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 61,032 psi | 88% | 3015 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 61,801 psi | 89% | 3087 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 58,697 psi | 84% | 3064 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 60,713 psi | 87% | 3077 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 59,364 psi | 85% | 3117 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,108 psi | 68% | 3031 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 60,205 psi | 86% | 2940 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 61,076 psi | 88% | 2995 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 59,205 psi | 85% | 3028 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 98% | 60,292 psi | 87% | 3091 fps | 100% |
| Rottweil R 907 | <<locked>> | 90% | 60,017 psi | 86% | 3005 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 92% | 61,946 psi | 89% | 3018 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 62,105 psi | 89% | 2969 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 62,149 psi | 89% | 2979 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 59,785 psi | 86% | 3018 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 59,132 psi | 85% | 3012 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 59,640 psi | 86% | 2979 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 60,133 psi | 86% | 2858 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 61,598 psi | 88% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 61,801 psi | 89% | 2976 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 59,799 psi | 86% | 3087 fps | 99.9% |
| Somchem S335 | <<locked>> | 82% | 59,741 psi | 86% | 2851 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 62,729 psi | 90% | 2995 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 60,698 psi | 87% | 2992 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 61,351 psi | 88% | 3022 fps | 99.2% |
| Somchem S365 | <<locked>> | 94% | 58,871 psi | 85% | 3031 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 60,916 psi | 88% | 3058 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 60,742 psi | 87% | 2831 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 61,003 psi | 88% | 2887 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 61,177 psi | 88% | 2907 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 62,308 psi | 90% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 61,148 psi | 88% | 3022 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,376 psi | 81% | 2979 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 84% | 59,263 psi | 85% | 2910 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 60,162 psi | 86% | 3035 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 61,757 psi | 89% | 3097 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 62,888 psi | 90% | 3202 fps | 99.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,951 psi | 72% | 2989 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 61,279 psi | 88% | 2982 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 58,987 psi | 85% | 3064 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,735 psi | 74% | 3107 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 60,017 psi | 86% | 2986 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 61,467 psi | 88% | 3058 fps | 99.9% |
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 2495 | <<locked>> | 80% | 54,302 psi | 78% | 2808 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 52,228 psi | 75% | 2851 fps | 99.6% |
| Accurate 3100 | <<locked>> | 80% | 29,109 psi | 42% | 2464 fps | 96.4% |
| Accurate 4064 | <<locked>> | 80% | 51,576 psi | 74% | 2825 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,827 psi | 57% | 2730 fps | 99.9% |
| Accurate High Country | 99.6 gr | 84% | 36,564 psi | 53% | 2753 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 90% | 42,917 psi | 62% | 2874 fps | 95.9% |
| ADI APS 450 | <<locked>> | 80% | 58,595 psi | 84% | 2260 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 57,363 psi | 82% | 2956 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 48,704 psi | 70% | 2815 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 33,736 psi | 48% | 2602 fps | 95% |
| ADI AR 2213 | <<locked>> | 88% | 39,349 psi | 57% | 2766 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 96% | 37,550 psi | 54% | 2710 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 94% | 31,154 psi | 45% | 2612 fps | 96.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 54,897 psi | 79% | 3045 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 33,910 psi | 49% | 2605 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,429 psi | 71% | 2838 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,794 psi | 76% | 2910 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,667 psi | 56% | 2743 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,309 psi | 64% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 33,620 psi | 48% | 2598 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 84% | 33,823 psi | 49% | 2651 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,239 psi | 41% | 2503 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 26,484 psi | 38% | 2461 fps | 95.5% |
| Alliant Reloder-26 | 97.7 gr | 80% | 30,371 psi | 44% | 2628 fps | 98.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 57,595 psi | 83% | 2979 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 51,097 psi | 73% | 2910 fps | 95.7% |
| Bofors RP15 | <<locked>> | 86% | 33,591 psi | 48% | 2644 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 49,908 psi | 72% | 2851 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 35,563 psi | 51% | 2726 fps | 95.4% |
| Bofors RP5 | <<locked>> | 84% | 33,823 psi | 49% | 2651 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 43,584 psi | 63% | 2740 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 35,998 psi | 52% | 2677 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 50,227 psi | 72% | 2871 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 41,974 psi | 60% | 2782 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 44,831 psi | 64% | 2799 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 39,262 psi | 56% | 2710 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 88% | 41,307 psi | 59% | 2753 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 58,059 psi | 83% | 2963 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,201 psi | 52% | 2625 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 55,056 psi | 79% | 2953 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 33,576 psi | 48% | 2717 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 41,017 psi | 59% | 2802 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 39% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 55,477 psi | 80% | 2913 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,198 psi | 74% | 2844 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,548 psi | 77% | 2884 fps | 99.9% |
| IMR 4350 | <<locked>> | 80% | 39,233 psi | 56% | 2671 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,121 psi | 65% | 2769 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 38,232 psi | 55% | 2680 fps | 99.8% |
| IMR 4895 | <<locked>> | 80% | 54,172 psi | 78% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 41,307 psi | 59% | 2717 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 88% | 37,550 psi | 54% | 2736 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 58,102 psi | 83% | 2920 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 55,825 psi | 80% | 2874 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 51,445 psi | 74% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,453 psi | 61% | 2713 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 40,698 psi | 58% | 2700 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 26,672 psi | 38% | 2395 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 55,796 psi | 80% | 2890 fps | 100% |
| Norma 202 | <<locked>> | 80% | 56,724 psi | 81% | 2884 fps | 100% |
| Norma 203B | <<locked>> | 80% | 52,112 psi | 75% | 2894 fps | 100% |
| Norma 204 | <<locked>> | 80% | 38,885 psi | 56% | 2703 fps | 96.8% |
| Norma 217 | <<locked>> | 98% | 31,111 psi | 45% | 2651 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 30,690 psi | 44% | 2598 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 39,581 psi | 57% | 2723 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 80% | 52,852 psi | 76% | 2920 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 37,086 psi | 53% | 2740 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 38,522 psi | 55% | 2717 fps | 99% |
| Ramshot Magnum | <<locked>> | 88% | 32,779 psi | 47% | 2615 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 40% | 1680 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,227 psi | 72% | 2858 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 57,740 psi | 83% | 3031 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,079 psi | 68% | 2904 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,740 psi | 57% | 2749 fps | 99.8% |
| ReloadSwiss RS 70 | 96.8 gr | 80% | 38,435 psi | 55% | 2766 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 30,530 psi | 44% | 2625 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 53,142 psi | 76% | 2844 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,905 psi | 67% | 2795 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 37,579 psi | 54% | 2644 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 32,634 psi | 47% | 2579 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 43,584 psi | 63% | 2740 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,453 psi | 61% | 2713 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 58,102 psi | 83% | 2920 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 51,445 psi | 74% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,698 psi | 58% | 2700 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,443 psi | 70% | 2858 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 55,956 psi | 80% | 2930 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 56,594 psi | 81% | 2812 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,008 psi | 69% | 2684 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,582 psi | 60% | 2661 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 34,722 psi | 50% | 2635 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 56,217 psi | 81% | 2808 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 58,523 psi | 84% | 2943 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 47,065 psi | 68% | 2795 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 40,872 psi | 59% | 2684 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 36,129 psi | 52% | 2677 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,214 psi | 48% | 2566 fps | 96.2% |
| Vihtavuori N133 | <<locked>> | 80% | 57,246 psi | 82% | 2789 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 53,809 psi | 77% | 2799 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,896 psi | 77% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,034 psi | 65% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,031 psi | 59% | 2717 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 32,764 psi | 47% | 2546 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 52,127 psi | 75% | 2815 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,437 psi | 58% | 2723 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 31,415 psi | 45% | 2575 fps | 99.1% |
| Vihtavuori N560 | <<locked>> | 86% | 38,435 psi | 55% | 2772 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 92% | 37,753 psi | 54% | 2749 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,132 psi | 58% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,090 psi | 60% | 2785 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,918 psi | 36% | 2503 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 56,115 psi | 81% | 2933 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 34,795 psi | 50% | 2602 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 114 powders for 37 XC loaded with the .376 | 270gr | Peregrine Bushmaster (VRG-3). Norma MRP delivers the highest muzzle velocity at 3,202 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,202 fps. Accurate 3100 gives the best case fill at 100 %, and 114 of the 114 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (480 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.376" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. Accurate High Country, Alliant Reloder-26, ReloadSwiss RS 70 rank at the top here: for 37 XC with the .376 | 270gr | Peregrine Bushmaster (VRG-3) 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.