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:1:14.0
Load data in caliber 37 XC with .376 | 250gr | Peregrine Glider GRM 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, 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>> | 82% | 59,292 psi | 85% | 2927 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 59,161 psi | 85% | 2963 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 60,930 psi | 88% | 3038 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 61,409 psi | 88% | 3054 fps | 99.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,691 psi | 73% | 2982 fps | 99.8% |
| Accurate 4064 | <<locked>> | 88% | 59,509 psi | 85% | 3022 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 60,945 psi | 88% | 3146 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 55,970 psi | 80% | 3205 fps | 98.7% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 53,084 psi | 76% | 3136 fps | 97% |
| ADI APS 450 | <<locked>> | 84% | 62,381 psi | 90% | 2362 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 62,816 psi | 90% | 3117 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 60,118 psi | 86% | 3068 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 58,247 psi | 84% | 3146 fps | 99.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,243 psi | 75% | 3084 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 61,293 psi | 88% | 3054 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 59,437 psi | 85% | 2959 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 60,089 psi | 86% | 3212 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 58,233 psi | 84% | 3143 fps | 99.3% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 58,233 psi | 84% | 3143 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 60,916 psi | 88% | 3087 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 61,279 psi | 88% | 3117 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 61,627 psi | 89% | 3205 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 59,480 psi | 85% | 3179 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,363 psi | 82% | 3133 fps | 99.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,807 psi | 73% | 3081 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,819 psi | 69% | 3009 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,626 psi | 60% | 2933 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,158 psi | 79% | 3212 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 59,263 psi | 85% | 3087 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,398 psi | 67% | 2999 fps | 97.8% |
| Bofors RP3 | <<locked>> | 90% | 62,047 psi | 89% | 3107 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,807 psi | 73% | 3081 fps | 98.7% |
| Bofors RP7 | <<locked>> | 94% | 61,293 psi | 88% | 3100 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 62,410 psi | 90% | 3022 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 61,641 psi | 89% | 3091 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 62,758 psi | 90% | 3133 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 59,495 psi | 85% | 3156 fps | 100% |
| Hodgdon H4350 | <<locked>> | 92% | 59,306 psi | 85% | 3110 fps | 99.5% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 56,130 psi | 81% | 3084 fps | 97.6% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 54,882 psi | 79% | 3064 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 84% | 59,524 psi | 86% | 3071 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 62,004 psi | 89% | 3110 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 60,191 psi | 86% | 3114 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 40,741 psi | 59% | 2963 fps | 97.1% |
| Hodgdon Superformance | <<locked>> | 94% | 60,452 psi | 87% | 3202 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,071 psi | 52% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 60,916 psi | 88% | 3074 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 60,365 psi | 87% | 3038 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 59,567 psi | 86% | 3048 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 62,772 psi | 90% | 3094 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 62,424 psi | 90% | 3133 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 59,350 psi | 85% | 3074 fps | 99.9% |
| IMR 4831 | <<locked>> | 98% | 61,235 psi | 88% | 3133 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 62,903 psi | 90% | 3143 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 57,653 psi | 83% | 3068 fps | 98% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 49,603 psi | 71% | 3051 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 84% | 61,293 psi | 88% | 3054 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 59,466 psi | 85% | 3028 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 61,424 psi | 88% | 3031 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 59,495 psi | 85% | 3035 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 59,219 psi | 85% | 3064 fps | 100% |
| Lovex S070 | <<locked>> | 96% | 60,611 psi | 87% | 3110 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,916 psi | 60% | 2831 fps | 98.9% |
| Norma 201 | <<locked>> | 86% | 61,134 psi | 88% | 3048 fps | 100% |
| Norma 202 | <<locked>> | 86% | 62,076 psi | 89% | 3041 fps | 100% |
| Norma 203B | <<locked>> | 88% | 60,452 psi | 87% | 3100 fps | 100% |
| Norma 204 | <<locked>> | 96% | 59,857 psi | 86% | 3143 fps | 99.3% |
| Norma MRPᴾ | <<locked>> | 100% | 54,027 psi | 78% | 3169 fps | 99.8% |
| Norma URP | <<locked>> | 96% | 59,422 psi | 85% | 3133 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 61,975 psi | 89% | 3130 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 49,632 psi | 71% | 3061 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 98% | 62,366 psi | 90% | 3196 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,208 psi | 64% | 2933 fps | 98% |
| Ramshot TAC | <<locked>> | 84% | 61,815 psi | 89% | 3097 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 84% | 61,960 psi | 89% | 3104 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 62,047 psi | 89% | 3058 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,666 psi | 53% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 62,801 psi | 90% | 3120 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 62,975 psi | 90% | 3196 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 59,001 psi | 85% | 3169 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 60,945 psi | 88% | 3173 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 59,698 psi | 86% | 3212 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,596 psi | 58% | 2953 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 84% | 61,482 psi | 88% | 3015 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 61,656 psi | 89% | 3045 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 61,902 psi | 89% | 3097 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 60,075 psi | 86% | 3114 fps | 98.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,507 psi | 81% | 3117 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 94% | 61,293 psi | 88% | 3100 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 59,219 psi | 85% | 3064 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 84% | 59,466 psi | 85% | 3028 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 59,495 psi | 85% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 60,611 psi | 87% | 3110 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 60,089 psi | 86% | 3117 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 60,640 psi | 87% | 3074 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 61,293 psi | 88% | 3087 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 62,076 psi | 89% | 2966 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 59,350 psi | 85% | 2920 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 59,321 psi | 85% | 3018 fps | 99.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,999 psi | 80% | 3114 fps | 99.2% |
| Somchem S335 | <<locked>> | 86% | 61,685 psi | 89% | 2963 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 60,336 psi | 87% | 3054 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 61,801 psi | 89% | 3094 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 62,468 psi | 90% | 3104 fps | 98.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 62,700 psi | 90% | 3176 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,203 psi | 82% | 3087 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 82% | 61,467 psi | 88% | 2913 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 62,511 psi | 90% | 2940 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 62,149 psi | 89% | 2992 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 62,772 psi | 90% | 3015 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 59,538 psi | 86% | 3012 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 61,902 psi | 89% | 3120 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,269 psi | 71% | 2946 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 84% | 62,062 psi | 89% | 3051 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 60,887 psi | 87% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 60,771 psi | 87% | 3130 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,447 psi | 77% | 3084 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 54,505 psi | 78% | 3156 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 62,352 psi | 90% | 3084 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 62,961 psi | 90% | 3104 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 59,698 psi | 86% | 3156 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,004 psi | 62% | 3068 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 61,656 psi | 89% | 3094 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,824 psi | 77% | 3028 fps | 98.8% |
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% | 55,738 psi | 80% | 2881 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 48,472 psi | 70% | 2822 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 56,782 psi | 82% | 2986 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,094 psi | 68% | 2835 fps | 98.2% |
| Accurate 3100 | <<locked>> | 86% | 30,966 psi | 44% | 2589 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 45,934 psi | 66% | 2831 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,548 psi | 50% | 2694 fps | 98.5% |
| Accurate High Country | <<locked>> | 92% | 41,872 psi | 60% | 2949 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 96% | 45,832 psi | 66% | 3005 fps | 95.3% |
| ADI APS 450 | <<locked>> | 80% | 58,233 psi | 84% | 2303 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 51,779 psi | 74% | 2959 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,990 psi | 63% | 2815 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 39,088 psi | 56% | 2795 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 94% | 42,598 psi | 61% | 2897 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,954 psi | 78% | 2953 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 55,622 psi | 80% | 2913 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,327 psi | 69% | 3031 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 39,088 psi | 56% | 2799 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 39,088 psi | 56% | 2799 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,193 psi | 63% | 2838 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,297 psi | 68% | 2907 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,272 psi | 49% | 2713 fps | 98.7% |
| Alliant Reloder-17 | 90.1 gr | 80% | 38,711 psi | 56% | 2841 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 38,653 psi | 56% | 2789 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 92% | 38,682 psi | 56% | 2841 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 24,772 psi | 36% | 2457 fps | 96.5% |
| Alliant Reloder-25 | <<locked>> | 90% | 30,081 psi | 43% | 2635 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 82% | 28,195 psi | 41% | 2628 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,764 psi | 74% | 2979 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 38,130 psi | 55% | 2825 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 44,280 psi | 64% | 2848 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 38,682 psi | 56% | 2841 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 39,117 psi | 56% | 2717 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 55,245 psi | 79% | 2930 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,722 psi | 77% | 2986 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,817 psi | 64% | 2858 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 36,927 psi | 53% | 2749 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 40,030 psi | 57% | 2772 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 94% | 45,571 psi | 65% | 2904 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 44,730 psi | 64% | 2887 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 52,359 psi | 75% | 2969 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,647 psi | 45% | 2598 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,095 psi | 71% | 2956 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 38,116 psi | 55% | 2897 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 35,969 psi | 52% | 2756 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 39% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,140 psi | 72% | 2920 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,837 psi | 76% | 2943 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,253 psi | 66% | 2848 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,660 psi | 70% | 2877 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 35,012 psi | 50% | 2641 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,712 psi | 58% | 2749 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 33,518 psi | 48% | 2651 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 48,501 psi | 70% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 44,715 psi | 64% | 2848 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 96% | 43,337 psi | 62% | 2927 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 53,954 psi | 78% | 2953 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,779 psi | 74% | 2927 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,039 psi | 73% | 2884 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,311 psi | 67% | 2841 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,087 psi | 55% | 2697 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 36,260 psi | 52% | 2677 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 29,965 psi | 43% | 2559 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 50,575 psi | 73% | 2900 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,198 psi | 74% | 2897 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,644 psi | 67% | 2894 fps | 100% |
| Norma 204 | <<locked>> | 84% | 39,465 psi | 57% | 2785 fps | 95.5% |
| Norma MRP | <<locked>> | 86% | 32,924 psi | 47% | 2730 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 34,780 psi | 50% | 2697 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 80% | 46,920 psi | 67% | 2913 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 42,975 psi | 62% | 2930 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 33,736 psi | 48% | 2680 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 94% | 35,404 psi | 51% | 2736 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 53,983 psi | 78% | 2986 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 80% | 54,099 psi | 78% | 2999 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 58,088 psi | 83% | 3005 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 39% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,049 psi | 65% | 2841 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,039 psi | 73% | 3025 fps | 100% |
| ReloadSwiss RS 60 | 90.1 gr | 80% | 41,234 psi | 59% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,432 psi | 49% | 2713 fps | 98.3% |
| ReloadSwiss RS 70 | 91.5 gr | 80% | 33,794 psi | 49% | 2723 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 35,201 psi | 51% | 2815 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 54,433 psi | 78% | 2920 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 48,008 psi | 69% | 2851 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,582 psi | 60% | 2792 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 43,337 psi | 62% | 2831 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 88% | 37,492 psi | 54% | 2769 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 39,117 psi | 56% | 2717 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,087 psi | 55% | 2697 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,779 psi | 74% | 2927 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,311 psi | 67% | 2841 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,260 psi | 52% | 2677 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,873 psi | 62% | 2848 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,765 psi | 76% | 2963 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,328 psi | 72% | 2930 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,619 psi | 74% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,439 psi | 62% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,246 psi | 54% | 2638 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 37,130 psi | 53% | 2762 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 51,271 psi | 74% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,649 psi | 76% | 2949 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,163 psi | 61% | 2792 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 44,483 psi | 64% | 2818 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 31,227 psi | 45% | 2651 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 35,665 psi | 51% | 2694 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 57,899 psi | 83% | 2871 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 52,185 psi | 75% | 2812 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,298 psi | 69% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,631 psi | 70% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,205 psi | 58% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,143 psi | 52% | 2694 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 35,143 psi | 50% | 2671 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 54,418 psi | 78% | 2953 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,949 psi | 67% | 2825 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,650 psi | 51% | 2697 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 26,847 psi | 39% | 2533 fps | 96.6% |
| Vihtavuori N560 | <<locked>> | 94% | 44,121 psi | 63% | 2966 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,592 psi | 51% | 2664 fps | 99.8% |
| Winchester 748 | <<locked>> | 80% | 54,940 psi | 79% | 3002 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 37,028 psi | 53% | 2753 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 82% | 23,163 psi | 33% | 2480 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,299 psi | 72% | 2936 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 37,710 psi | 54% | 2733 fps | 95.2% |
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 Glider GRM. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,212 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,212 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 1:14.0 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, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 37 XC with the .376 | 250gr | Peregrine Glider GRM 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.