Load Specifications
Load data in caliber .300 PRC with .308 | 135gr | Peregrine VRG-3 Lever bullet and 98 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.
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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>> | 84% | 55,071 psi | 85% | 3179 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,580 psi | 89% | 3255 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,995 psi | 78% | 3205 fps | 98.2% |
| Accurate 4064 | <<locked>> | 86% | 55,579 psi | 86% | 3238 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,869 psi | 87% | 3343 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 58,769 psi | 90% | 3333 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,434 psi | 87% | 3278 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 58,668 psi | 90% | 3392 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,450 psi | 88% | 3274 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,796 psi | 86% | 3406 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,043 psi | 88% | 3301 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,348 psi | 88% | 3323 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 57,841 psi | 89% | 3412 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,564 psi | 85% | 3379 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,595 psi | 89% | 3369 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,921 psi | 74% | 3232 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,930 psi | 65% | 3120 fps | 96.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,724 psi | 86% | 3448 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,390 psi | 85% | 3284 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 58,088 psi | 89% | 3320 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 57,682 psi | 89% | 3297 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 58,581 psi | 90% | 3251 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,580 psi | 89% | 3304 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 58,668 psi | 90% | 3337 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 55,738 psi | 86% | 3340 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 90% | 55,492 psi | 85% | 3297 fps | 97% |
| Hodgdon H4895 | <<locked>> | 82% | 55,782 psi | 86% | 3284 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 58,088 psi | 89% | 3323 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,115 psi | 86% | 3317 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,536 psi | 87% | 3379 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,969 psi | 55% | 2096 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,058 psi | 88% | 3287 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,246 psi | 87% | 3268 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,956 psi | 86% | 3261 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,201 psi | 85% | 3232 fps | 98% |
| IMR 4350 | <<locked>> | 96% | 58,639 psi | 90% | 3327 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,898 psi | 86% | 3268 fps | 98.1% |
| IMR 4831 | <<locked>> | 96% | 57,392 psi | 88% | 3333 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 55,172 psi | 85% | 3301 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 57,450 psi | 88% | 3274 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,303 psi | 85% | 3241 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,464 psi | 88% | 3248 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,825 psi | 86% | 3251 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,622 psi | 86% | 3261 fps | 99.1% |
| Lovex S070 | <<locked>> | 94% | 57,072 psi | 88% | 3304 fps | 98.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,959 psi | 65% | 3022 fps | 96% |
| Norma 201 | <<locked>> | 84% | 57,145 psi | 88% | 3268 fps | 100% |
| Norma 202 | <<locked>> | 84% | 58,044 psi | 89% | 3268 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,608 psi | 87% | 3310 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,985 psi | 86% | 3320 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 54,476 psi | 84% | 3389 fps | 98% |
| Norma URP | <<locked>> | 94% | 55,767 psi | 86% | 3330 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 57,899 psi | 89% | 3340 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 58,624 psi | 90% | 3386 fps | 99.2% |
| Ramshot TAC | <<locked>> | 82% | 57,740 psi | 89% | 3297 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,812 psi | 89% | 3314 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,593 psi | 56% | 2146 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 58,711 psi | 90% | 3317 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 58,682 psi | 90% | 3406 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,056 psi | 85% | 3379 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,072 psi | 88% | 3366 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,825 psi | 86% | 3399 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 57,580 psi | 89% | 3245 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,914 psi | 89% | 3271 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,928 psi | 89% | 3310 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,826 psi | 87% | 3353 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 57,682 psi | 89% | 3297 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,622 psi | 86% | 3261 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,303 psi | 85% | 3241 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,825 psi | 86% | 3251 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,072 psi | 88% | 3304 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,188 psi | 86% | 3317 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,420 psi | 87% | 3271 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,435 psi | 88% | 3301 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 58,305 psi | 90% | 3202 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,666 psi | 86% | 3143 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,622 psi | 86% | 3205 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,333 psi | 87% | 3350 fps | 97% |
| Somchem S335 | <<locked>> | 84% | 57,769 psi | 89% | 3192 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,333 psi | 87% | 3261 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,972 psi | 89% | 3307 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 58,711 psi | 90% | 3389 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,508 psi | 88% | 3327 fps | 98% |
| Vihtavuori N133 | <<locked>> | 84% | 58,798 psi | 90% | 3182 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 58,175 psi | 89% | 3228 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 58,784 psi | 90% | 3241 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,811 psi | 86% | 3225 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,986 psi | 89% | 3323 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,487 psi | 76% | 3163 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 82% | 58,044 psi | 89% | 3278 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 57,159 psi | 88% | 3238 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,159 psi | 88% | 3327 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,592 psi | 82% | 3320 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 58,291 psi | 90% | 3291 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,970 psi | 86% | 3343 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,250 psi | 67% | 3264 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,725 psi | 89% | 3307 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,143 psi | 83% | 3255 fps | 96.3% |
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% | 48,283 psi | 74% | 3071 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,978 psi | 72% | 3054 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 41,060 psi | 63% | 3002 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 45,730 psi | 70% | 3068 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,447 psi | 53% | 2864 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 51,706 psi | 80% | 3209 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 43,758 psi | 67% | 3031 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 96% | 51,097 psi | 79% | 3251 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,882 psi | 83% | 3215 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,327 psi | 74% | 3264 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,947 psi | 68% | 3058 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,210 psi | 73% | 3140 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,142 psi | 53% | 2887 fps | 95.2% |
| Alliant Reloder-17 | 72.4 gr | 80% | 38,595 psi | 59% | 3031 fps | 98.5% |
| Alliant Reloder-19 | <<locked>> | 96% | 50,517 psi | 78% | 3238 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 88% | 32,082 psi | 49% | 2841 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 39,102 psi | 60% | 3045 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 90% | 37,869 psi | 58% | 3058 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,590 psi | 79% | 3219 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 44,063 psi | 68% | 3064 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 44,483 psi | 68% | 3038 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 55,071 psi | 85% | 3196 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,795 psi | 83% | 3241 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,759 psi | 69% | 3074 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 45,368 psi | 70% | 3133 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 86% | 48,588 psi | 75% | 3163 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 52,301 psi | 80% | 3225 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,444 psi | 48% | 2766 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,805 psi | 75% | 3189 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 44,904 psi | 69% | 3150 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,789 psi | 41% | 1880 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,966 psi | 77% | 3166 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 52,547 psi | 81% | 3209 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,963 psi | 71% | 3074 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,414 psi | 74% | 3104 fps | 96.7% |
| IMR 4350 | <<locked>> | 88% | 45,397 psi | 70% | 3077 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,207 psi | 66% | 3012 fps | 95.1% |
| IMR 4831 | <<locked>> | 82% | 35,650 psi | 55% | 2884 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 48,443 psi | 75% | 3173 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 53,882 psi | 83% | 3215 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,750 psi | 80% | 3182 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,836 psi | 78% | 3133 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 46,122 psi | 71% | 3077 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 37,942 psi | 58% | 2887 fps | 95% |
| Lovex S070 | <<locked>> | 86% | 43,932 psi | 68% | 3048 fps | 95.7% |
| Lovex S071 | <<locked>> | 98% | 39,247 psi | 60% | 2959 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 50,386 psi | 78% | 3153 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,952 psi | 78% | 3153 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,543 psi | 72% | 3123 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 52,185 psi | 80% | 3248 fps | 95.7% |
| Norma MRP | <<locked>> | 94% | 43,830 psi | 67% | 3169 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 34,563 psi | 53% | 2871 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 46,920 psi | 72% | 3143 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 41,539 psi | 64% | 3051 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 54,085 psi | 83% | 3232 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 54,070 psi | 83% | 3251 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 42% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,831 psi | 69% | 3054 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,879 psi | 78% | 3268 fps | 99.5% |
| ReloadSwiss RS 60 | 72.4 gr | 80% | 41,075 psi | 63% | 3107 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 37,028 psi | 57% | 2953 fps | 95.7% |
| ReloadSwiss RS 70 | 77.2 gr | 84% | 38,914 psi | 60% | 3031 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 54,172 psi | 83% | 3189 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,877 psi | 74% | 3097 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 41,379 psi | 64% | 2999 fps | 99% |
| Rottweil R 905 | <<locked>> | 96% | 49,327 psi | 76% | 3212 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 84% | 44,483 psi | 68% | 3038 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,942 psi | 58% | 2887 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,750 psi | 80% | 3182 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,122 psi | 71% | 3077 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 43,932 psi | 68% | 3048 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,743 psi | 66% | 3058 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,678 psi | 81% | 3205 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,212 psi | 77% | 3173 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,300 psi | 79% | 3091 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,163 psi | 66% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,540 psi | 65% | 2953 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,878 psi | 75% | 3209 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 51,111 psi | 79% | 3087 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,460 psi | 81% | 3196 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,945 psi | 65% | 3005 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 31,024 psi | 48% | 2812 fps | 97.3% |
| Somchem S385 | <<locked>> | 94% | 46,775 psi | 72% | 3127 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 51,851 psi | 80% | 3077 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,935 psi | 74% | 3068 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,399 psi | 74% | 3077 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,001 psi | 62% | 2930 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 36,056 psi | 55% | 2877 fps | 95.6% |
| Vihtavuori N165 | <<locked>> | 98% | 46,209 psi | 71% | 3097 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 54,172 psi | 83% | 3215 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,876 psi | 72% | 3064 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,563 psi | 55% | 2874 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 86% | 33,098 psi | 51% | 2861 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,491 psi | 55% | 2844 fps | 97.9% |
| Winchester 760 | <<locked>> | 84% | 42,438 psi | 65% | 3068 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 90% | 30,414 psi | 47% | 2871 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,198 psi | 77% | 3179 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,227 psi | 77% | 3182 fps | 95.4% |
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 .300 PRC loaded with the .308 | 135gr | Peregrine VRG-3 Lever. Alliant Reloder-26 delivers the highest muzzle velocity at 3,448 fps; across all powders the maximum-charge window runs from 2,096 fps to 3,448 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 (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.308" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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 .300 PRC with the .308 | 135gr | Peregrine VRG-3 Lever they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.