Load Specifications
Bullet Manufacturer:Cutting Edge
Bullet Weight:180 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:7.62 x 53 R Fin. load data
Case Length (l3):2.106"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:64 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:27"
Max. allowed Pressure:56,565 psi
Recommended Twist Rate:1:11.0
Load data in caliber 7.62 x 53 R Fin. with .308 | 180gr | CutEdge Maximus bullet and 95 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: 27"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 48,718 psi | 86% | 2533 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 49,893 psi | 88% | 2595 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 48,312 psi | 85% | 2585 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 48,080 psi | 85% | 2608 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 48,327 psi | 85% | 2628 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 43,932 psi | 78% | 2631 fps | 98% |
| ADI AR 2206H | <<locked>> | 90% | 50,821 psi | 90% | 2664 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 94% | 48,704 psi | 86% | 2612 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 88% | 50,270 psi | 89% | 2621 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 88% | 49,748 psi | 88% | 2602 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 48,414 psi | 86% | 2671 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 50,111 psi | 89% | 2766 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 50,778 psi | 90% | 2677 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 48,892 psi | 86% | 2543 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 48,486 psi | 86% | 2651 fps | 99.2% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,469 psi | 79% | 2644 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 47,979 psi | 85% | 2736 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 50,908 psi | 90% | 2523 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 50,386 psi | 89% | 2677 fps | 99% |
| Bofors RP3 | <<locked>> | 96% | 50,792 psi | 90% | 2690 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 49,574 psi | 88% | 2566 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 48,747 psi | 86% | 2651 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 50,401 psi | 89% | 2736 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 84% | 50,966 psi | 90% | 2621 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 48,327 psi | 85% | 2598 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 49,124 psi | 87% | 2651 fps | 98.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 47,993 psi | 85% | 2684 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 88% | 48,051 psi | 85% | 2625 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,596 psi | 72% | 2533 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 49,588 psi | 88% | 2700 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,389 psi | 61% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 49,676 psi | 88% | 2631 fps | 99.7% |
| IMR 3031 | <<locked>> | 90% | 50,343 psi | 89% | 2661 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 48,312 psi | 85% | 2598 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 90% | 49,153 psi | 87% | 2575 fps | 96% |
| IMR 4198 | <<locked>> | 82% | 49,748 psi | 88% | 2507 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 51,184 psi | 90% | 2641 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,293 psi | 75% | 2582 fps | 97.7% |
| IMR 4895 | <<locked>> | 92% | 49,719 psi | 88% | 2680 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 88% | 50,270 psi | 89% | 2621 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 84% | 49,922 psi | 88% | 2608 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 49,545 psi | 88% | 2641 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 48,298 psi | 85% | 2552 fps | 99.4% |
| Lovex S062 | <<locked>> | 94% | 50,473 psi | 89% | 2638 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,617 psi | 88% | 2631 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 46,789 psi | 83% | 2605 fps | 95.9% |
| Norma 201 | <<locked>> | 90% | 49,414 psi | 87% | 2612 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 49,995 psi | 88% | 2621 fps | 100% |
| Norma 203B | <<locked>> | 94% | 50,850 psi | 90% | 2687 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 44,179 psi | 78% | 2625 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 94% | 51,024 psi | 90% | 2710 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 43,816 psi | 77% | 2618 fps | 95.9% |
| Ramshot TAC | <<locked>> | 88% | 50,604 psi | 89% | 2635 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 49,661 psi | 88% | 2654 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 48,153 psi | 85% | 2572 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,563 psi | 61% | 1631 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 50,198 psi | 89% | 2612 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 50,096 psi | 89% | 2635 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 47,979 psi | 85% | 2707 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 47,819 psi | 85% | 2740 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 43,758 psi | 77% | 2648 fps | 97.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 45,339 psi | 80% | 2671 fps | 97.2% |
| Rottweil R 901 | <<locked>> | 88% | 50,444 psi | 89% | 2598 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 49,966 psi | 88% | 2612 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 98% | 50,662 psi | 90% | 2680 fps | 99.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,617 psi | 88% | 2631 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 49,545 psi | 88% | 2641 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 50,473 psi | 89% | 2638 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 46,789 psi | 83% | 2605 fps | 95.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 49,763 psi | 88% | 2575 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 49,153 psi | 87% | 2690 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 49,574 psi | 88% | 2556 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 48,428 psi | 86% | 2605 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 49,385 psi | 87% | 2638 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 48,965 psi | 87% | 2523 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 48,414 psi | 86% | 2520 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 49,980 psi | 88% | 2585 fps | 96.3% |
| Somchem S321 | <<locked>> | 84% | 47,776 psi | 84% | 2605 fps | 99.9% |
| Somchem S335 | <<locked>> | 90% | 50,705 psi | 90% | 2559 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 47,964 psi | 85% | 2602 fps | 99.3% |
| Somchem S355 | <<locked>> | 96% | 48,370 psi | 86% | 2635 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,262 psi | 69% | 2579 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 84% | 48,907 psi | 86% | 2497 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 49,023 psi | 87% | 2513 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 48,878 psi | 86% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 50,372 psi | 89% | 2598 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 49,763 psi | 88% | 2618 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,876 psi | 83% | 2628 fps | 98.2% |
| Vihtavuori N530 | <<locked>> | 88% | 50,720 psi | 90% | 2621 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 48,602 psi | 86% | 2598 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 45,861 psi | 81% | 2635 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,950 psi | 85% | 2615 fps | 99.7% |
| Winchester 748 | <<locked>> | 88% | 49,821 psi | 88% | 2667 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 47,993 psi | 85% | 2684 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 90% | 48,588 psi | 86% | 2641 fps | 99.7% |
Start Load - Barrel Length: 27"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 40,118 psi | 71% | 2405 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 43,482 psi | 77% | 2500 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,271 psi | 57% | 2320 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,841 psi | 69% | 2457 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 30,560 psi | 54% | 2306 fps | 99.3% |
| Accurate 4350 | <<locked>> | 94% | 35,375 psi | 63% | 2470 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 37,057 psi | 66% | 2421 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 33,678 psi | 60% | 2329 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,117 psi | 69% | 2434 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 80% | 37,956 psi | 67% | 2431 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,266 psi | 80% | 2618 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 35,578 psi | 63% | 2477 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,298 psi | 54% | 2293 fps | 96.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,730 psi | 81% | 2497 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 32,982 psi | 58% | 2352 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 92% | 34,708 psi | 61% | 2434 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 84% | 30,052 psi | 53% | 2352 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,892 psi | 85% | 2484 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 35,911 psi | 63% | 2415 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 29,443 psi | 52% | 2290 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,278 psi | 73% | 2431 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,782 psi | 65% | 2444 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,611 psi | 72% | 2566 fps | 97.9% |
| Hodgdon H322 | <<locked>> | 80% | 44,570 psi | 79% | 2530 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,295 psi | 80% | 2552 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 37,710 psi | 67% | 2448 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 98% | 44,991 psi | 80% | 2631 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 37,289 psi | 66% | 2431 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 29,631 psi | 52% | 2290 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,156 psi | 59% | 2392 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,556 psi | 45% | 1424 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,882 psi | 63% | 2385 fps | 97.6% |
| IMR 3031 | <<locked>> | 80% | 36,027 psi | 64% | 2431 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,996 psi | 58% | 2310 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,166 psi | 82% | 2526 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 46,847 psi | 83% | 2467 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 45,121 psi | 80% | 2543 fps | 95% |
| IMR 4831 | <<locked>> | 94% | 34,621 psi | 61% | 2431 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 33,707 psi | 60% | 2382 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 80% | 39,117 psi | 69% | 2434 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 80% | 43,236 psi | 76% | 2503 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 35,128 psi | 62% | 2398 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 37,942 psi | 67% | 2369 fps | 97.6% |
| Lovex S062 | <<locked>> | 80% | 32,532 psi | 58% | 2313 fps | 97.5% |
| Lovex S065 | <<locked>> | 92% | 38,653 psi | 68% | 2438 fps | 95% |
| Lovex S070 | <<locked>> | 98% | 44,135 psi | 78% | 2559 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 36,085 psi | 64% | 2375 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 36,172 psi | 64% | 2392 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 32,358 psi | 57% | 2343 fps | 96.1% |
| Norma URP | <<locked>> | 92% | 34,185 psi | 60% | 2425 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 31,691 psi | 56% | 2343 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 98% | 41,176 psi | 73% | 2569 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 38,972 psi | 69% | 2428 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,956 psi | 67% | 2451 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,221 psi | 75% | 2474 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,570 psi | 45% | 1453 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,801 psi | 77% | 2513 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 43,830 psi | 77% | 2533 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 33,953 psi | 60% | 2438 fps | 96% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,065 psi | 50% | 2306 fps | 96.9% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 35,679 psi | 63% | 2490 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 39,624 psi | 70% | 2556 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 39,711 psi | 70% | 2421 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 34,214 psi | 60% | 2329 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 80% | 27,601 psi | 49% | 2234 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 92% | 38,653 psi | 68% | 2438 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,128 psi | 62% | 2398 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 32,532 psi | 58% | 2313 fps | 97.5% |
| Shooters World SW4350 | <<locked>> | 98% | 44,135 psi | 78% | 2559 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,296 psi | 82% | 2523 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,198 psi | 55% | 2336 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,630 psi | 82% | 2513 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 36,550 psi | 65% | 2392 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,665 psi | 63% | 2392 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,956 psi | 67% | 2346 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,024 psi | 55% | 2221 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 46,601 psi | 82% | 2533 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 41,756 psi | 74% | 2507 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 37,362 psi | 66% | 2349 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 36,506 psi | 65% | 2402 fps | 97.2% |
| Somchem S355 | <<locked>> | 80% | 28,892 psi | 51% | 2251 fps | 95.3% |
| Somchem S365 | <<locked>> | 88% | 26,760 psi | 47% | 2270 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 43,192 psi | 76% | 2411 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,101 psi | 67% | 2346 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,199 psi | 59% | 2326 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,156 psi | 60% | 2329 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 27,296 psi | 48% | 2192 fps | 96.2% |
| Vihtavuori N160 | <<locked>> | 92% | 36,042 psi | 64% | 2428 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 38,856 psi | 69% | 2428 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 80% | 32,779 psi | 58% | 2320 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 92% | 35,085 psi | 62% | 2431 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,240 psi | 53% | 2264 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 37,695 psi | 67% | 2464 fps | 99.3% |
| Winchester 760 | <<locked>> | 98% | 44,991 psi | 80% | 2631 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,577 psi | 61% | 2388 fps | 97.4% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 95 powders for 7.62 x 53 R Fin. loaded with the .308 | 180gr | CutEdge Maximus. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,766 fps; across all powders the maximum-charge window runs from 1,591 fps to 2,766 fps. Accurate 4350 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 180.0 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, Hodgdon H414 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.