Load Specifications
Load data in caliber .270 Win. with .277 | 150gr | Speer Hot-Cor bullet and 96 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-16 and Alliant Reloder-26.
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>> | 82% | 53,548 psi | 86% | 2648 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,998 psi | 88% | 2717 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,880 psi | 83% | 2749 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 53,969 psi | 87% | 2703 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,433 psi | 87% | 2805 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 56,405 psi | 90% | 2776 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,085 psi | 87% | 2733 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,288 psi | 89% | 2844 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,866 psi | 85% | 2831 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,113 psi | 85% | 2848 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,955 psi | 88% | 2756 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,042 psi | 88% | 2776 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,027 psi | 88% | 2858 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,376 psi | 90% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,534 psi | 87% | 2831 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,547 psi | 83% | 2828 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,689 psi | 78% | 2769 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,525 psi | 68% | 2690 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,970 psi | 90% | 2959 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,434 psi | 90% | 2799 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,355 psi | 76% | 2756 fps | 96.6% |
| Bofors RP3 | <<locked>> | 86% | 55,767 psi | 89% | 2772 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,547 psi | 83% | 2828 fps | 97.7% |
| Bofors RP7 | <<locked>> | 90% | 54,955 psi | 88% | 2753 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 86% | 56,144 psi | 90% | 2789 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 53,113 psi | 85% | 2802 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 53,098 psi | 85% | 2762 fps | 98% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,492 psi | 89% | 2818 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,550 psi | 89% | 2785 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,548 psi | 86% | 2769 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 52,808 psi | 85% | 2831 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,390 psi | 58% | 1709 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,723 psi | 88% | 2740 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,505 psi | 86% | 2713 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,333 psi | 90% | 2753 fps | 99.3% |
| IMR 4350 | <<locked>> | 94% | 55,825 psi | 90% | 2785 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,519 psi | 86% | 2733 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 54,621 psi | 88% | 2792 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,434 psi | 90% | 2802 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,853 psi | 88% | 2772 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 50,502 psi | 81% | 2805 fps | 95.9% |
| Lovex S060 | <<locked>> | 82% | 55,376 psi | 89% | 2703 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,693 psi | 86% | 2707 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,447 psi | 86% | 2730 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 54,447 psi | 87% | 2766 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,192 psi | 69% | 2605 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 55,143 psi | 88% | 2720 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,985 psi | 90% | 2720 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,331 psi | 87% | 2762 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,808 psi | 85% | 2779 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 54,998 psi | 88% | 2917 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 53,098 psi | 85% | 2789 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,129 psi | 88% | 2789 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,720 psi | 81% | 2818 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 94% | 55,419 psi | 89% | 2841 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,976 psi | 72% | 2694 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,869 psi | 59% | 1745 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,101 psi | 90% | 2776 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,057 psi | 90% | 2841 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,811 psi | 89% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,027 psi | 87% | 2825 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,420 psi | 90% | 2907 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,510 psi | 67% | 2703 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 84% | 55,709 psi | 89% | 2720 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,608 psi | 89% | 2766 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 53,490 psi | 86% | 2759 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 98% | 53,751 psi | 86% | 2818 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 54,955 psi | 88% | 2753 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,447 psi | 86% | 2730 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 53,693 psi | 86% | 2707 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,447 psi | 87% | 2766 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,664 psi | 86% | 2776 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,853 psi | 88% | 2749 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,985 psi | 90% | 2651 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,403 psi | 86% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,098 psi | 85% | 2684 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,272 psi | 85% | 2812 fps | 98% |
| Somchem S335 | <<locked>> | 82% | 55,651 psi | 89% | 2648 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,695 psi | 89% | 2762 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,347 psi | 89% | 2756 fps | 96.2% |
| Somchem S365 | <<locked>> | 96% | 55,724 psi | 89% | 2841 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,404 psi | 87% | 2795 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 84% | 56,188 psi | 90% | 2680 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,391 psi | 90% | 2697 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,432 psi | 86% | 2690 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,376 psi | 89% | 2785 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,111 psi | 80% | 2713 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 54,462 psi | 87% | 2694 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,418 psi | 87% | 2789 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,491 psi | 87% | 2844 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,405 psi | 89% | 2907 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,940 psi | 88% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,113 psi | 85% | 2802 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,150 psi | 71% | 2825 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,984 psi | 88% | 2756 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,549 psi | 87% | 2789 fps | 97.9% |
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% | 50,212 psi | 81% | 2602 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,066 psi | 77% | 2605 fps | 97.5% |
| Accurate 3100 | <<locked>> | 88% | 34,505 psi | 55% | 2428 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 47,558 psi | 76% | 2608 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,100 psi | 58% | 2477 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 80% | 53,026 psi | 85% | 2726 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,078 psi | 72% | 2585 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 42,743 psi | 69% | 2621 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 98% | 49,530 psi | 79% | 2772 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,472 psi | 79% | 2789 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,542 psi | 73% | 2612 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,588 psi | 78% | 2674 fps | 99.9% |
| Alliant Reloder-16 | 43.4 gr | 80% | 35,288 psi | 57% | 2484 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,943 psi | 64% | 2608 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,395 psi | 68% | 2615 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,482 psi | 68% | 2661 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,831 psi | 41% | 2244 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,156 psi | 53% | 2467 fps | 95.4% |
| Alliant Reloder-26 | 50.3 gr | 84% | 31,401 psi | 50% | 2464 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,779 psi | 85% | 2743 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 44,411 psi | 71% | 2700 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 45,730 psi | 73% | 2621 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,482 psi | 68% | 2661 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 40,408 psi | 65% | 2493 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 46,180 psi | 74% | 2631 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 38,130 psi | 61% | 2523 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 80% | 41,104 psi | 66% | 2543 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 51,967 psi | 83% | 2762 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,793 psi | 53% | 2382 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,227 psi | 81% | 2720 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,769 psi | 64% | 2589 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 43% | 1522 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,111 psi | 82% | 2684 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,427 psi | 76% | 2618 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,559 psi | 79% | 2644 fps | 98.4% |
| IMR 4350 | <<locked>> | 82% | 38,508 psi | 62% | 2477 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,829 psi | 67% | 2523 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 34,751 psi | 56% | 2431 fps | 97.5% |
| IMR 4895 | <<locked>> | 80% | 49,821 psi | 80% | 2703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,561 psi | 83% | 2720 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 98% | 47,326 psi | 76% | 2746 fps | 95% |
| Lovex S060 | <<locked>> | 80% | 52,098 psi | 84% | 2654 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,645 psi | 76% | 2615 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,218 psi | 63% | 2474 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 37,478 psi | 60% | 2454 fps | 95.7% |
| Lovex S071 | <<locked>> | 92% | 33,489 psi | 54% | 2405 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 51,808 psi | 83% | 2671 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,576 psi | 84% | 2671 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,921 psi | 77% | 2661 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,265 psi | 69% | 2612 fps | 95.2% |
| Norma MRP | <<locked>> | 90% | 38,827 psi | 62% | 2615 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 35,969 psi | 58% | 2470 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 80% | 48,066 psi | 77% | 2680 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,094 psi | 76% | 2753 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 34,766 psi | 56% | 2454 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 41,800 psi | 67% | 2631 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,601 psi | 44% | 1562 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,166 psi | 74% | 2612 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,228 psi | 84% | 2785 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,467 psi | 68% | 2661 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,708 psi | 57% | 2490 fps | 97.4% |
| ReloadSwiss RS 70 | 47.5 gr | 80% | 34,911 psi | 56% | 2497 fps | 96.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,754 psi | 62% | 2641 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 49,443 psi | 79% | 2628 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,975 psi | 69% | 2566 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 47,369 psi | 76% | 2654 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 41,336 psi | 66% | 2595 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 40,408 psi | 65% | 2493 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,218 psi | 63% | 2474 fps | 97.4% |
| Shooters World Precision | <<locked>> | 80% | 47,645 psi | 76% | 2615 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,478 psi | 60% | 2454 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,932 psi | 70% | 2615 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,314 psi | 82% | 2697 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,779 psi | 85% | 2608 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,570 psi | 71% | 2480 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,464 psi | 62% | 2421 fps | 95.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,729 psi | 70% | 2648 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 52,359 psi | 84% | 2605 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,352 psi | 70% | 2566 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 51,764 psi | 83% | 2700 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 32,343 psi | 52% | 2428 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 39,349 psi | 63% | 2526 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 49,647 psi | 80% | 2592 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,734 psi | 80% | 2605 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,408 psi | 66% | 2500 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,376 psi | 60% | 2474 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 41,249 psi | 66% | 2556 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 48,138 psi | 77% | 2602 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,912 psi | 59% | 2474 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 80% | 28,210 psi | 45% | 2320 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 98% | 51,663 psi | 83% | 2844 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,579 psi | 59% | 2444 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,130 psi | 61% | 2523 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,889 psi | 42% | 2326 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,401 psi | 82% | 2703 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,353 psi | 71% | 2621 fps | 95.7% |
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 104 powders for .270 Win. loaded with the .277 | 150gr | Speer Hot-Cor. Alliant Reloder-26 delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,709 fps to 2,959 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.277" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-16, Alliant Reloder-26 rank at the top here: for .270 Win. with the .277 | 150gr | Speer Hot-Cor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 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.