Load Specifications
Load data in caliber .270 Win. with .277 | 150gr | Geco PLUS bullet and 95 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-26 and Hodgdon Superformance.
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% | 53,998 psi | 87% | 2657 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,259 psi | 89% | 2723 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,721 psi | 85% | 2766 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 54,346 psi | 87% | 2710 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,056 psi | 88% | 2818 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 54,578 psi | 88% | 2897 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 86% | 54,665 psi | 88% | 2743 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,811 psi | 89% | 2854 fps | 98.2% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,635 psi | 86% | 2848 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,461 psi | 86% | 2854 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,332 psi | 89% | 2766 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,666 psi | 89% | 2789 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,651 psi | 89% | 2867 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,098 psi | 85% | 2838 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,027 psi | 88% | 2841 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,344 psi | 84% | 2844 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,255 psi | 79% | 2779 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,134 psi | 69% | 2707 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 52,750 psi | 85% | 2913 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,051 psi | 77% | 2769 fps | 96.9% |
| Bofors RP3 | <<locked>> | 86% | 56,101 psi | 90% | 2782 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,344 psi | 84% | 2844 fps | 97.9% |
| Bofors RP7 | <<locked>> | 90% | 55,535 psi | 89% | 2766 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 86% | 56,434 psi | 90% | 2795 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 53,693 psi | 86% | 2815 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 88% | 53,664 psi | 86% | 2776 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 98% | 53,693 psi | 86% | 2792 fps | 96% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,333 psi | 90% | 2835 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,101 psi | 90% | 2795 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,157 psi | 87% | 2782 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,345 psi | 86% | 2841 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,463 psi | 58% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,071 psi | 88% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,143 psi | 87% | 2726 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,316 psi | 85% | 2707 fps | 99% |
| IMR 4350 | <<locked>> | 94% | 56,362 psi | 90% | 2799 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,722 psi | 86% | 2740 fps | 99% |
| IMR 4831 | <<locked>> | 94% | 55,216 psi | 89% | 2805 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,403 psi | 86% | 2762 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,317 psi | 89% | 2782 fps | 96.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 50,966 psi | 82% | 2818 fps | 96.1% |
| Lovex S060 | <<locked>> | 82% | 55,738 psi | 89% | 2710 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,346 psi | 87% | 2720 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,708 psi | 86% | 2736 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 55,027 psi | 88% | 2779 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,743 psi | 70% | 2618 fps | 98.2% |
| Norma 201 | <<locked>> | 82% | 55,463 psi | 89% | 2726 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,347 psi | 90% | 2726 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,955 psi | 88% | 2772 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,679 psi | 86% | 2799 fps | 97.7% |
| Norma MRPᴾ | <<locked>> | 100% | 55,521 psi | 89% | 2927 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 53,693 psi | 86% | 2799 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,419 psi | 89% | 2799 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,111 psi | 82% | 2828 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 94% | 55,999 psi | 90% | 2854 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,629 psi | 73% | 2710 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,956 psi | 59% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,347 psi | 90% | 2782 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 52,910 psi | 85% | 2835 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,621 psi | 88% | 2835 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,142 psi | 85% | 2861 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,872 psi | 67% | 2720 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 84% | 56,391 psi | 90% | 2733 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,289 psi | 90% | 2776 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,302 psi | 87% | 2776 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 98% | 54,302 psi | 87% | 2828 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 90% | 55,535 psi | 89% | 2766 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,708 psi | 86% | 2736 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 54,346 psi | 87% | 2720 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,027 psi | 88% | 2779 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,273 psi | 87% | 2785 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,187 psi | 88% | 2756 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,333 psi | 90% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,027 psi | 87% | 2621 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,635 psi | 86% | 2694 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,809 psi | 86% | 2825 fps | 98.1% |
| Somchem S335 | <<locked>> | 82% | 56,014 psi | 90% | 2657 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,014 psi | 90% | 2769 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,738 psi | 89% | 2766 fps | 96.3% |
| Somchem S365 | <<locked>> | 96% | 56,362 psi | 90% | 2851 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,926 psi | 88% | 2805 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 53,127 psi | 85% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,345 psi | 86% | 2661 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,027 psi | 87% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,956 psi | 90% | 2795 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,879 psi | 82% | 2730 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 84% | 55,027 psi | 88% | 2703 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,969 psi | 88% | 2802 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,434 psi | 89% | 2858 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,898 psi | 90% | 2917 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,448 psi | 89% | 2762 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,693 psi | 86% | 2815 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,541 psi | 71% | 2835 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,303 psi | 89% | 2766 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,405 psi | 89% | 2805 fps | 98.1% |
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% | 50,633 psi | 81% | 2612 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,617 psi | 78% | 2618 fps | 97.6% |
| Accurate 3100 | <<locked>> | 88% | 34,998 psi | 56% | 2441 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 47,964 psi | 77% | 2618 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,448 psi | 58% | 2487 fps | 98% |
| Accurate MAGPRO | <<locked>> | 98% | 50,778 psi | 81% | 2835 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 45,455 psi | 73% | 2595 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 43,250 psi | 69% | 2631 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 98% | 49,995 psi | 80% | 2785 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,082 psi | 80% | 2802 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,905 psi | 74% | 2618 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,936 psi | 78% | 2684 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,621 psi | 57% | 2493 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,277 psi | 65% | 2618 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,641 psi | 68% | 2621 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,946 psi | 69% | 2674 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,092 psi | 42% | 2254 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,547 psi | 54% | 2480 fps | 95.7% |
| Alliant Reloder-26 | 50.8 gr | 84% | 31,821 psi | 51% | 2477 fps | 95.9% |
| Bofors RP15 | <<locked>> | 96% | 42,119 psi | 68% | 2654 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 46,064 psi | 74% | 2628 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,946 psi | 69% | 2674 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 40,712 psi | 65% | 2503 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 46,485 psi | 75% | 2638 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 38,464 psi | 62% | 2530 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 41,423 psi | 66% | 2552 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 96% | 50,372 psi | 81% | 2740 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,460 psi | 84% | 2772 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,098 psi | 53% | 2392 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,618 psi | 81% | 2726 fps | 100% |
| Hodgdon Superformance | 51.2 gr | 82% | 40,219 psi | 64% | 2602 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 44% | 1529 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,721 psi | 83% | 2697 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,761 psi | 77% | 2625 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,140 psi | 80% | 2657 fps | 98.5% |
| IMR 4350 | <<locked>> | 82% | 38,769 psi | 62% | 2484 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,119 psi | 68% | 2533 fps | 96.8% |
| IMR 4831 | <<locked>> | 80% | 35,085 psi | 56% | 2441 fps | 97.7% |
| IMR 4895 | <<locked>> | 80% | 50,154 psi | 80% | 2710 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 48,936 psi | 78% | 2680 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 98% | 47,790 psi | 77% | 2759 fps | 95.2% |
| Lovex S060 | <<locked>> | 80% | 52,431 psi | 84% | 2664 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,993 psi | 77% | 2625 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,537 psi | 63% | 2484 fps | 97.5% |
| Lovex S070 | <<locked>> | 80% | 37,782 psi | 61% | 2464 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 33,968 psi | 54% | 2415 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 52,156 psi | 84% | 2677 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,924 psi | 85% | 2680 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,298 psi | 77% | 2671 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,816 psi | 70% | 2625 fps | 95.5% |
| Norma MRP | <<locked>> | 88% | 36,840 psi | 59% | 2569 fps | 95% |
| Norma URP | <<locked>> | 80% | 36,289 psi | 58% | 2480 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 48,675 psi | 78% | 2694 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,805 psi | 77% | 2769 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 35,259 psi | 57% | 2467 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 96% | 39,465 psi | 63% | 2585 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,760 psi | 45% | 1568 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,456 psi | 74% | 2621 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,815 psi | 69% | 2671 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,245 psi | 58% | 2503 fps | 97.6% |
| ReloadSwiss RS 70 | 48 gr | 80% | 35,346 psi | 57% | 2510 fps | 96.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,059 psi | 63% | 2651 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 49,806 psi | 80% | 2635 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,366 psi | 70% | 2575 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 47,601 psi | 76% | 2664 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 90% | 41,843 psi | 67% | 2608 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 40,712 psi | 65% | 2503 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,537 psi | 63% | 2484 fps | 97.5% |
| Shooters World Precision | <<locked>> | 80% | 47,993 psi | 77% | 2625 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,782 psi | 61% | 2464 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,512 psi | 71% | 2628 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,909 psi | 83% | 2707 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,171 psi | 85% | 2615 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,918 psi | 72% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,740 psi | 62% | 2431 fps | 96% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,452 psi | 66% | 2602 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 52,707 psi | 85% | 2612 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,671 psi | 70% | 2572 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 52,199 psi | 84% | 2710 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 32,866 psi | 53% | 2441 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 39,856 psi | 64% | 2539 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 50,082 psi | 80% | 2602 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,125 psi | 80% | 2612 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,713 psi | 67% | 2507 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,710 psi | 60% | 2480 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 94% | 41,698 psi | 67% | 2569 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 48,486 psi | 78% | 2608 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,231 psi | 60% | 2484 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 28,558 psi | 46% | 2329 fps | 95.7% |
| Vihtavuori N560 | <<locked>> | 96% | 48,921 psi | 78% | 2799 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,811 psi | 59% | 2451 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,464 psi | 62% | 2530 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,223 psi | 42% | 2343 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,996 psi | 83% | 2717 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 41,727 psi | 67% | 2572 fps | 95% |
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 102 powders for .270 Win. loaded with the .277 | 150gr | Geco PLUS. Norma MRP delivers the highest muzzle velocity at 2,927 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,927 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.277" calls for a 1:12.5 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-26, Hodgdon Superformance rank at the top here: for .270 Win. with the .277 | 150gr | Geco PLUS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.