Load Specifications
Bullet Manufacturer:Frontier Bullets
Bullet Weight:180 gr
Bullet Diameter:0.307"
Bullet Length:<<locked>>
Caliber:.30-06 R Stief load data
Case Length (l3):2.49"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:69 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:58,740 psi
Recommended Twist Rate:1:11.0
Load data in caliber .30-06 R Stief with .307 | 180gr | Frontier PH HPBT 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>> | 84% | 51,619 psi | 88% | 2520 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,084 psi | 90% | 2582 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 51,634 psi | 88% | 2598 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 52,736 psi | 90% | 2572 fps | 96.1% |
| Accurate 4064 | <<locked>> | 92% | 52,823 psi | 90% | 2621 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,025 psi | 89% | 2687 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 86% | 50,778 psi | 86% | 2605 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 92% | 51,837 psi | 88% | 2605 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 49,937 psi | 85% | 2562 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 84% | 50,024 psi | 85% | 2546 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 49,951 psi | 85% | 2707 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 51,285 psi | 87% | 2625 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 51,866 psi | 88% | 2641 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,589 psi | 86% | 2694 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 51,576 psi | 88% | 2733 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,071 psi | 61% | 2444 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,871 psi | 68% | 2579 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 50,169 psi | 85% | 2615 fps | 99.1% |
| Bofors RP3 | <<locked>> | 92% | 51,706 psi | 88% | 2638 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 52,170 psi | 89% | 2605 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 51,822 psi | 88% | 2549 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,112 psi | 89% | 2635 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 50,212 psi | 85% | 2671 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 92% | 52,808 psi | 90% | 2648 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 98% | 51,750 psi | 88% | 2684 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 96% | 52,895 psi | 90% | 2651 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 86% | 51,285 psi | 87% | 2618 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,891 psi | 80% | 2582 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 50,082 psi | 85% | 2644 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 98% | 52,765 psi | 90% | 2717 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,244 psi | 60% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 52,417 psi | 89% | 2618 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 50,763 psi | 86% | 2605 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 51,169 psi | 87% | 2589 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 51,401 psi | 88% | 2566 fps | 96.8% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,953 psi | 88% | 2625 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 51,010 psi | 87% | 2589 fps | 96.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,516 psi | 84% | 2635 fps | 99% |
| IMR 4895 | <<locked>> | 90% | 53,156 psi | 90% | 2671 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 49,937 psi | 85% | 2562 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 53,026 psi | 90% | 2592 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 49,937 psi | 85% | 2585 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 50,720 psi | 86% | 2543 fps | 99.6% |
| Lovex S062 | <<locked>> | 90% | 50,836 psi | 87% | 2585 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 49,908 psi | 85% | 2579 fps | 97.8% |
| Lovex S070 | <<locked>> | 98% | 50,749 psi | 86% | 2612 fps | 97% |
| Norma 201 | <<locked>> | 88% | 52,721 psi | 90% | 2602 fps | 100% |
| Norma 202 | <<locked>> | 86% | 49,922 psi | 85% | 2562 fps | 100% |
| Norma 203B | <<locked>> | 90% | 51,039 psi | 87% | 2631 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 51,372 psi | 87% | 2680 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 90% | 51,343 psi | 87% | 2654 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,531 psi | 86% | 2674 fps | 97.6% |
| Ramshot TAC | <<locked>> | 84% | 49,951 psi | 85% | 2572 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 86% | 52,968 psi | 90% | 2644 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 50,749 psi | 86% | 2562 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,520 psi | 60% | 1637 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,707 psi | 90% | 2592 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 49,937 psi | 85% | 2579 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 51,924 psi | 88% | 2700 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 51,474 psi | 88% | 2736 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,677 psi | 88% | 2710 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,967 psi | 88% | 2733 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 84% | 50,676 psi | 86% | 2543 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 50,227 psi | 86% | 2559 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 51,285 psi | 87% | 2628 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 52,170 psi | 89% | 2605 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 49,908 psi | 85% | 2579 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 49,937 psi | 85% | 2585 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 50,836 psi | 87% | 2585 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 50,749 psi | 86% | 2612 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,982 psi | 90% | 2684 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 51,779 psi | 88% | 2602 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 52,373 psi | 89% | 2625 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 51,488 psi | 88% | 2510 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 51,155 psi | 87% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 50,299 psi | 86% | 2536 fps | 96.5% |
| Somchem S321 | <<locked>> | 82% | 50,792 psi | 86% | 2592 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 50,749 psi | 86% | 2507 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 51,169 psi | 87% | 2595 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 52,040 psi | 89% | 2628 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,876 psi | 78% | 2631 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 51,213 psi | 87% | 2477 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 51,634 psi | 88% | 2497 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 52,649 psi | 90% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 50,285 psi | 86% | 2543 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 49,908 psi | 85% | 2562 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 50,850 psi | 87% | 2631 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 84% | 50,227 psi | 86% | 2562 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 51,880 psi | 88% | 2585 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,098 psi | 90% | 2684 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,769 psi | 66% | 2516 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 51,416 psi | 88% | 2615 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 52,982 psi | 90% | 2651 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,011 psi | 89% | 2690 fps | 97.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,155 psi | 55% | 2421 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 88% | 51,938 psi | 88% | 2631 fps | 99.9% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 45,788 psi | 78% | 2438 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,276 psi | 65% | 2362 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,991 psi | 77% | 2500 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 49,501 psi | 84% | 2523 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 36,201 psi | 62% | 2356 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 34,490 psi | 59% | 2379 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 41,930 psi | 71% | 2457 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 35,810 psi | 61% | 2320 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,932 psi | 75% | 2467 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 43,743 psi | 74% | 2457 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,058 psi | 65% | 2477 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,085 psi | 60% | 2336 fps | 97.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,753 psi | 64% | 2395 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,056 psi | 60% | 2388 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 30,400 psi | 52% | 2300 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,836 psi | 54% | 2339 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,101 psi | 63% | 2516 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,973 psi | 70% | 2457 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 34,606 psi | 59% | 2339 fps | 97.8% |
| Bofors RP7 | <<locked>> | 94% | 49,211 psi | 84% | 2556 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,963 psi | 78% | 2461 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,699 psi | 73% | 2490 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,702 psi | 80% | 2615 fps | 99% |
| Hodgdon H380 | <<locked>> | 80% | 35,621 psi | 61% | 2343 fps | 95% |
| Hodgdon H414 | <<locked>> | 94% | 45,353 psi | 77% | 2582 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 94% | 49,588 psi | 84% | 2602 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 42,250 psi | 72% | 2467 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,211 psi | 51% | 2247 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,305 psi | 65% | 2441 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 96% | 49,124 psi | 84% | 2657 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,078 psi | 44% | 1427 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,683 psi | 69% | 2425 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 41,771 psi | 71% | 2467 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,579 psi | 64% | 2352 fps | 97.1% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,310 psi | 77% | 2464 fps | 95.3% |
| IMR 4350 | <<locked>> | 98% | 49,052 psi | 84% | 2575 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,237 psi | 77% | 2493 fps | 95.2% |
| IMR 4831 | <<locked>> | 90% | 35,636 psi | 61% | 2385 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 38,595 psi | 66% | 2421 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 43,932 psi | 75% | 2467 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 49,705 psi | 85% | 2546 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,944 psi | 70% | 2441 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,438 psi | 72% | 2405 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 37,434 psi | 64% | 2359 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 39,204 psi | 67% | 2392 fps | 95.2% |
| Lovex S070 | <<locked>> | 94% | 44,599 psi | 76% | 2510 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 41,162 psi | 70% | 2415 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 41,263 psi | 70% | 2425 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,115 psi | 63% | 2385 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 34,896 psi | 59% | 2379 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 36,680 psi | 62% | 2395 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 41,481 psi | 71% | 2513 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 43,874 psi | 75% | 2467 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,250 psi | 74% | 2490 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,732 psi | 81% | 2516 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,411 psi | 45% | 1463 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,429 psi | 84% | 2546 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 43,801 psi | 75% | 2477 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,450 psi | 67% | 2490 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 32,343 psi | 55% | 2365 fps | 98.6% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,796 psi | 63% | 2448 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,914 psi | 68% | 2510 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 45,121 psi | 77% | 2457 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,233 psi | 67% | 2372 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 32,648 psi | 56% | 2290 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 94% | 49,211 psi | 84% | 2556 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,204 psi | 67% | 2392 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,944 psi | 70% | 2441 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,434 psi | 64% | 2359 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 94% | 44,599 psi | 76% | 2510 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,649 psi | 57% | 2336 fps | 96.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,119 psi | 72% | 2444 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,640 psi | 69% | 2431 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,699 psi | 73% | 2379 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,317 psi | 60% | 2254 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 43,947 psi | 75% | 2434 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 47,413 psi | 81% | 2539 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,235 psi | 72% | 2379 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,713 psi | 71% | 2441 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 33,533 psi | 57% | 2297 fps | 96.9% |
| Somchem S365 | <<locked>> | 84% | 27,615 psi | 47% | 2234 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 48,240 psi | 82% | 2434 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,917 psi | 73% | 2372 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,435 psi | 65% | 2359 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,204 psi | 67% | 2369 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,879 psi | 54% | 2241 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 88% | 36,738 psi | 63% | 2385 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 44,034 psi | 75% | 2464 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,695 psi | 64% | 2356 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,969 psi | 61% | 2385 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 31,908 psi | 54% | 2362 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,356 psi | 52% | 2215 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 43,511 psi | 74% | 2507 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 45,672 psi | 78% | 2585 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,211 psi | 51% | 2359 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,856 psi | 68% | 2431 fps | 98.6% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 96 powders for .30-06 R Stief loaded with the .307 | 180gr | Frontier PH HPBT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,736 fps; across all powders the maximum-charge window runs from 1,601 fps to 2,736 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 (405 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.307" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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.