Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:150 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.003"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:74 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:11.0
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 150gr | Peregrine Glider GRM bullet and 96 powders. The key underlying parameters are shown in the table above.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 90% | 57,827 psi | 89% | 2917 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 58,001 psi | 89% | 3028 fps | 99.3% |
| Accurate 2460 | <<locked>> | 86% | 56,405 psi | 87% | 2946 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 58,784 psi | 90% | 2979 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 58,392 psi | 90% | 3009 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 58,233 psi | 90% | 3018 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,224 psi | 73% | 2920 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 84% | 57,435 psi | 88% | 2864 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 57,899 psi | 89% | 2894 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 57,058 psi | 88% | 3015 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 98% | 57,914 psi | 89% | 3009 fps | 99.4% |
| ADI AR 2219 | <<locked>> | 84% | 58,421 psi | 90% | 2992 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 56,231 psi | 87% | 2969 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 90% | 56,028 psi | 86% | 2946 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 57,827 psi | 89% | 3081 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 56,869 psi | 87% | 3133 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 57,377 psi | 88% | 3031 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 86% | 57,363 psi | 88% | 2927 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 58,131 psi | 89% | 3051 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,804 psi | 72% | 2930 fps | 97.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,578 psi | 84% | 3094 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,681 psi | 87% | 2861 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 56,985 psi | 88% | 3028 fps | 99.1% |
| Bofors RP3 | <<locked>> | 98% | 57,740 psi | 89% | 3041 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 90% | 58,378 psi | 90% | 2956 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,998 psi | 85% | 2995 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 57,319 psi | 88% | 3100 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 86% | 57,116 psi | 88% | 2972 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 58,349 psi | 90% | 3002 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,796 psi | 86% | 3005 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 92% | 57,566 psi | 89% | 3028 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,018 psi | 66% | 2808 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 56,420 psi | 87% | 3054 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,534 psi | 53% | 1801 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,492 psi | 85% | 2979 fps | 99.7% |
| IMR 3031 | <<locked>> | 92% | 56,710 psi | 87% | 3012 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 57,551 psi | 89% | 2992 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 94% | 58,276 psi | 90% | 2972 fps | 96.8% |
| IMR 4198 | <<locked>> | 86% | 58,001 psi | 89% | 2887 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 57,276 psi | 88% | 2986 fps | 96.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,034 psi | 69% | 2861 fps | 97.1% |
| IMR 4895 | <<locked>> | 94% | 55,840 psi | 86% | 3031 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 90% | 56,231 psi | 87% | 2969 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 86% | 56,246 psi | 87% | 2953 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 56,057 psi | 86% | 2989 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 57,058 psi | 88% | 2943 fps | 99.6% |
| Lovex S062 | <<locked>> | 96% | 56,739 psi | 87% | 2986 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,388 psi | 81% | 2920 fps | 97.1% |
| Norma 200 | <<locked>> | 82% | 57,145 psi | 88% | 2894 fps | 100% |
| Norma 201 | <<locked>> | 92% | 55,463 psi | 85% | 2959 fps | 99.9% |
| Norma 202 | <<locked>> | 92% | 56,028 psi | 86% | 2966 fps | 100% |
| Norma 203B | <<locked>> | 96% | 57,159 psi | 88% | 3038 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 47,021 psi | 72% | 2913 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 96% | 58,131 psi | 89% | 3068 fps | 99.7% |
| Ramshot TAC | <<locked>> | 90% | 56,782 psi | 87% | 2982 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,985 psi | 86% | 3002 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 88% | 57,638 psi | 89% | 2972 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,853 psi | 54% | 1844 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,854 psi | 86% | 2956 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 56,391 psi | 87% | 2982 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 58,784 psi | 90% | 3127 fps | 99.6% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 58,363 psi | 90% | 3159 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,036 psi | 72% | 2940 fps | 97.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,080 psi | 74% | 2959 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 90% | 56,101 psi | 86% | 2940 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,579 psi | 86% | 2949 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 57,290 psi | 88% | 3028 fps | 99.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,388 psi | 81% | 2920 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 92% | 56,057 psi | 86% | 2989 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 56,739 psi | 87% | 2986 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,898 psi | 86% | 2927 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 57,363 psi | 88% | 2605 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 58,755 psi | 90% | 3002 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,999 psi | 86% | 3045 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,056 psi | 85% | 2904 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 58,769 psi | 90% | 3015 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,274 psi | 85% | 2982 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 57,711 psi | 89% | 2904 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 57,595 psi | 89% | 2897 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 57,841 psi | 89% | 3012 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 56,652 psi | 87% | 2900 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 58,276 psi | 90% | 3009 fps | 99.7% |
| Somchem S355ᴾ | <<locked>> | 100% | 57,914 psi | 89% | 3028 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,974 psi | 65% | 2861 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 88% | 57,479 psi | 88% | 2874 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 57,638 psi | 89% | 2890 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 58,508 psi | 90% | 2966 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 56,449 psi | 87% | 2940 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 56,028 psi | 86% | 2959 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,821 psi | 77% | 2920 fps | 97.8% |
| Vihtavuori N530 | <<locked>> | 90% | 57,014 psi | 88% | 2972 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 58,508 psi | 90% | 2989 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,834 psi | 75% | 2920 fps | 97.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,068 psi | 79% | 2907 fps | 99.5% |
| Winchester 748 | <<locked>> | 90% | 56,362 psi | 87% | 3018 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,085 psi | 85% | 2992 fps | 99.7% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 42,003 psi | 65% | 2677 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 54,230 psi | 83% | 2969 fps | 98.9% |
| Accurate 2460 | <<locked>> | 80% | 45,716 psi | 70% | 2782 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,055 psi | 52% | 2572 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,915 psi | 63% | 2730 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 32,227 psi | 50% | 2549 fps | 98.7% |
| Accurate 4350 | <<locked>> | 94% | 37,855 psi | 58% | 2733 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 50,691 psi | 78% | 2769 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,082 psi | 79% | 2792 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,740 psi | 60% | 2680 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 37,492 psi | 58% | 2635 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 51,068 psi | 79% | 2887 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,843 psi | 63% | 2700 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 80% | 39,871 psi | 61% | 2703 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,413 psi | 73% | 2910 fps | 99% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 40,132 psi | 62% | 2812 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,937 psi | 49% | 2536 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,688 psi | 73% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,811 psi | 57% | 2657 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,885 psi | 60% | 2756 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 86% | 33,808 psi | 52% | 2657 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,937 psi | 77% | 2766 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,782 psi | 58% | 2674 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 31,125 psi | 48% | 2530 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,699 psi | 66% | 2697 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,015 psi | 60% | 2710 fps | 98.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,859 psi | 66% | 2848 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 80% | 46,615 psi | 72% | 2815 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,442 psi | 73% | 2835 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 42,409 psi | 65% | 2766 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 39,059 psi | 60% | 2694 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,185 psi | 51% | 2585 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,969 psi | 54% | 2648 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,527 psi | 39% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,565 psi | 58% | 2644 fps | 96.8% |
| IMR 3031 | <<locked>> | 80% | 38,043 psi | 59% | 2703 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,738 psi | 57% | 2612 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 90% | 51,256 psi | 79% | 2861 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 48,501 psi | 75% | 2753 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 50,430 psi | 78% | 2874 fps | 95% |
| IMR 4831 | <<locked>> | 96% | 39,479 psi | 61% | 2749 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 35,418 psi | 54% | 2635 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 40,843 psi | 63% | 2700 fps | 98.3% |
| Lovex D073.5 | <<locked>> | 80% | 45,556 psi | 70% | 2785 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 36,999 psi | 57% | 2657 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 39,436 psi | 61% | 2628 fps | 96.9% |
| Lovex S062 | <<locked>> | 80% | 34,098 psi | 52% | 2562 fps | 96.7% |
| Lovex S065 | <<locked>> | 96% | 46,224 psi | 71% | 2812 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 53,519 psi | 82% | 2844 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,666 psi | 58% | 2631 fps | 97.7% |
| Norma 202 | <<locked>> | 80% | 37,956 psi | 58% | 2651 fps | 99.4% |
| Norma 203B | <<locked>> | 80% | 33,968 psi | 52% | 2592 fps | 95% |
| Norma URP | <<locked>> | 94% | 38,609 psi | 59% | 2740 fps | 95% |
| Ramshot Big Game | <<locked>> | 82% | 35,839 psi | 55% | 2654 fps | 95.4% |
| Ramshot TAC | <<locked>> | 82% | 43,482 psi | 67% | 2749 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,813 psi | 61% | 2710 fps | 96.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,324 psi | 68% | 2749 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,686 psi | 40% | 1644 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,890 psi | 71% | 2792 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 49,240 psi | 76% | 2864 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 38,261 psi | 59% | 2756 fps | 95.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,515 psi | 45% | 2546 fps | 95.8% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 40,799 psi | 63% | 2815 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 44,991 psi | 69% | 2900 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 41,336 psi | 64% | 2690 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 35,926 psi | 55% | 2585 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 84% | 33,504 psi | 52% | 2585 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 46,224 psi | 71% | 2812 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,999 psi | 57% | 2657 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 34,098 psi | 52% | 2562 fps | 96.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,689 psi | 75% | 2812 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 54,375 psi | 84% | 2569 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,416 psi | 79% | 2894 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,911 psi | 54% | 2638 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,588 psi | 75% | 2805 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 41,452 psi | 64% | 2717 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,260 psi | 57% | 2644 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,537 psi | 61% | 2608 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,460 psi | 50% | 2464 fps | 99.1% |
| Somchem S321 | <<locked>> | 80% | 43,903 psi | 68% | 2779 fps | 99.1% |
| Somchem S335 | <<locked>> | 80% | 38,885 psi | 60% | 2608 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 38,464 psi | 59% | 2661 fps | 96.4% |
| Somchem S355 | <<locked>> | 82% | 32,460 psi | 50% | 2543 fps | 95% |
| Somchem S365 | <<locked>> | 90% | 30,153 psi | 46% | 2566 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 44,933 psi | 69% | 2690 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,740 psi | 61% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,925 psi | 54% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,998 psi | 55% | 2589 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 28,892 psi | 44% | 2428 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 94% | 40,654 psi | 63% | 2746 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 40,712 psi | 63% | 2694 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 80% | 34,519 psi | 53% | 2569 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 94% | 39,769 psi | 61% | 2746 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 34,040 psi | 52% | 2562 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 39,813 psi | 61% | 2736 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,376 psi | 56% | 2644 fps | 96.6% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 96 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 150gr | Peregrine Glider GRM. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,159 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,159 fps. Accurate 4350 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.