Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 150gr | Peregrine Bushmaster (VRG-3) bullet and 94 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-17.
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.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 86% | 56,144 psi | 90% | 3012 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,013 psi | 88% | 3022 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,587 psi | 76% | 2976 fps | 97.7% |
| Accurate 4064 | <<locked>> | 86% | 52,910 psi | 85% | 3015 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,693 psi | 86% | 3110 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 56,304 psi | 90% | 3100 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,172 psi | 87% | 3051 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,332 psi | 89% | 3150 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,158 psi | 88% | 3048 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,997 psi | 85% | 3169 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,114 psi | 88% | 3140 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,563 psi | 87% | 3074 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,984 psi | 88% | 3097 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,868 psi | 88% | 3176 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,289 psi | 90% | 3209 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,288 psi | 87% | 3130 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,034 psi | 72% | 3005 fps | 99.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,576 psi | 83% | 3202 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,910 psi | 85% | 3061 fps | 99.6% |
| Bofors RP3 | <<locked>> | 88% | 55,143 psi | 88% | 3091 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,882 psi | 88% | 3061 fps | 97.6% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,984 psi | 88% | 3077 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,840 psi | 90% | 3104 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 56,376 psi | 90% | 3166 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 90% | 53,055 psi | 85% | 3068 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 82% | 53,447 psi | 86% | 3054 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,998 psi | 88% | 3097 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,534 psi | 86% | 3094 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,026 psi | 85% | 3140 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,766 psi | 57% | 1932 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,650 psi | 88% | 3061 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,824 psi | 86% | 3041 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,519 psi | 86% | 3031 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,171 psi | 85% | 3009 fps | 97.8% |
| IMR 4350 | <<locked>> | 96% | 55,869 psi | 90% | 3094 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,490 psi | 86% | 3038 fps | 97.8% |
| IMR 4831 | <<locked>> | 96% | 54,259 psi | 87% | 3104 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 56,434 psi | 90% | 3130 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,158 psi | 88% | 3048 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,823 psi | 85% | 3018 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,492 psi | 89% | 3025 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,563 psi | 86% | 3028 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,084 psi | 85% | 3035 fps | 98.9% |
| Lovex S070 | <<locked>> | 94% | 54,244 psi | 87% | 3074 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 54,824 psi | 88% | 3041 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,738 psi | 89% | 3045 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,244 psi | 87% | 3084 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,939 psi | 85% | 3084 fps | 96.1% |
| Norma MRPᴾ | <<locked>> | 100% | 50,879 psi | 82% | 3153 fps | 97.5% |
| Norma URP | <<locked>> | 96% | 56,347 psi | 90% | 3156 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 54,926 psi | 88% | 3107 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,274 psi | 89% | 3153 fps | 98.9% |
| Ramshot TAC | <<locked>> | 82% | 55,419 psi | 89% | 3071 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,390 psi | 89% | 3087 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,159 psi | 90% | 3087 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,709 psi | 89% | 3169 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,840 psi | 90% | 3205 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,650 psi | 86% | 3130 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,562 psi | 84% | 3159 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 55,608 psi | 89% | 3022 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,550 psi | 89% | 3045 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,230 psi | 89% | 3084 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,476 psi | 86% | 3117 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 92% | 54,882 psi | 88% | 3061 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,084 psi | 85% | 3035 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,823 psi | 85% | 3018 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,563 psi | 86% | 3028 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,244 psi | 87% | 3074 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,519 psi | 86% | 3091 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,085 psi | 87% | 3045 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,853 psi | 88% | 3071 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,043 psi | 90% | 2976 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,432 psi | 86% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,026 psi | 85% | 2982 fps | 97.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,982 psi | 85% | 3110 fps | 96.5% |
| Somchem S335 | <<locked>> | 84% | 55,579 psi | 89% | 2969 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,824 psi | 86% | 3035 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,259 psi | 89% | 3081 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,056 psi | 88% | 3156 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,157 psi | 87% | 3094 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 82% | 53,200 psi | 85% | 2913 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,724 psi | 89% | 3005 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,275 psi | 90% | 3018 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,345 psi | 86% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,114 psi | 88% | 3094 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 55,680 psi | 89% | 3048 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,578 psi | 88% | 3015 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,056 psi | 87% | 3094 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,314 psi | 81% | 3091 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,027 psi | 88% | 3068 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,086 psi | 90% | 3097 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,808 psi | 85% | 3104 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,350 psi | 65% | 3028 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,940 psi | 88% | 3077 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 46,064 psi | 74% | 2858 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,889 psi | 72% | 2838 fps | 95.1% |
| Accurate 3100 | <<locked>> | 94% | 38,566 psi | 62% | 2789 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,598 psi | 70% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 34,925 psi | 56% | 2726 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 49,632 psi | 80% | 2989 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 42,105 psi | 68% | 2825 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 96% | 48,501 psi | 78% | 3022 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,764 psi | 83% | 2995 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,963 psi | 74% | 3035 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 48,356 psi | 78% | 3018 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,119 psi | 68% | 2848 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,150 psi | 72% | 2917 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 82% | 34,795 psi | 56% | 2746 fps | 95.9% |
| Alliant Reloder-17 | 64.1 gr | 80% | 36,709 psi | 59% | 2822 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,718 psi | 77% | 3009 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,327 psi | 49% | 2638 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,505 psi | 57% | 2838 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,284 psi | 79% | 2995 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 41,872 psi | 67% | 2851 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 45,310 psi | 73% | 2884 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,372 psi | 82% | 3018 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,670 psi | 68% | 2861 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 43,004 psi | 69% | 2913 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 86% | 46,514 psi | 75% | 2943 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 50,140 psi | 80% | 2999 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,950 psi | 48% | 2572 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,572 psi | 75% | 2972 fps | 99.9% |
| Hodgdon Superformance | 74.5 gr | 88% | 45,730 psi | 73% | 2995 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,672 psi | 43% | 1729 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,080 psi | 77% | 2946 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 50,299 psi | 81% | 2986 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,237 psi | 71% | 2861 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,688 psi | 75% | 2887 fps | 96.5% |
| IMR 4350 | <<locked>> | 90% | 46,021 psi | 74% | 2917 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,324 psi | 71% | 2864 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 33,823 psi | 54% | 2684 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 46,311 psi | 74% | 2953 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 51,764 psi | 83% | 2995 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,226 psi | 79% | 2959 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,965 psi | 79% | 2913 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 44,164 psi | 71% | 2861 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 38,609 psi | 62% | 2743 fps | 95.6% |
| Lovex S070 | <<locked>> | 86% | 41,829 psi | 67% | 2831 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 48,443 psi | 78% | 2933 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,008 psi | 79% | 2936 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,527 psi | 71% | 2907 fps | 99.3% |
| Norma 204 | <<locked>> | 92% | 49,327 psi | 79% | 3018 fps | 95.1% |
| Norma MRP | <<locked>> | 96% | 44,092 psi | 71% | 3012 fps | 95.7% |
| Norma URP | <<locked>> | 82% | 35,143 psi | 56% | 2730 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 44,657 psi | 72% | 2923 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 39,276 psi | 63% | 2835 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 51,909 psi | 83% | 3009 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,779 psi | 83% | 3028 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,873 psi | 69% | 2838 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,472 psi | 78% | 3041 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,131 psi | 63% | 2894 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,809 psi | 56% | 2743 fps | 95.3% |
| ReloadSwiss RS 70 | 68.3 gr | 84% | 36,927 psi | 59% | 2815 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 52,185 psi | 84% | 2969 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,977 psi | 74% | 2877 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,392 psi | 63% | 2789 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 49,966 psi | 80% | 3054 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 86% | 45,310 psi | 73% | 2884 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,609 psi | 62% | 2743 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,226 psi | 79% | 2959 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,164 psi | 71% | 2861 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 41,829 psi | 67% | 2831 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,741 psi | 65% | 2848 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,256 psi | 81% | 2982 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,211 psi | 77% | 2956 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,588 psi | 80% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,582 psi | 67% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,395 psi | 70% | 2802 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,501 psi | 79% | 3048 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 49,255 psi | 79% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,111 psi | 80% | 2976 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 40,132 psi | 64% | 2799 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 29,283 psi | 47% | 2612 fps | 97% |
| Somchem S385 | <<locked>> | 94% | 44,034 psi | 71% | 2904 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 50,111 psi | 80% | 2867 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,035 psi | 74% | 2854 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,398 psi | 74% | 2864 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,189 psi | 61% | 2723 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 34,243 psi | 55% | 2677 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 51,938 psi | 83% | 2989 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,802 psi | 72% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,158 psi | 58% | 2733 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 88% | 33,330 psi | 53% | 2723 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,765 psi | 54% | 2644 fps | 97.6% |
| Winchester 748 | <<locked>> | 80% | 52,359 psi | 84% | 3038 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 43,004 psi | 69% | 2913 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,718 psi | 46% | 2661 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,935 psi | 77% | 2959 fps | 99.8% |
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 94 powders for .300 Win. Mag. loaded with the .308 | 150gr | Peregrine Bushmaster (VRG-3). Alliant Reloder-17 delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,932 fps to 3,209 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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-17 rank at the top here: for .300 Win. Mag. with the .308 | 150gr | 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.