Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 188gr | Discreet Ballistics Selous Machined Expander bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 70 and ReloadSwiss RS 60.
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: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 48,965 psi | 89% | 2513 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 46,920 psi | 85% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 46,920 psi | 85% | 2585 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 46,920 psi | 85% | 2585 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 47,543 psi | 86% | 2539 fps | 97% |
| Accurate 3100ᴾ | <<locked>> | 100% | 37,144 psi | 67% | 2493 fps | 96.7% |
| Accurate 4064 | <<locked>> | 88% | 46,992 psi | 85% | 2585 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 48,994 psi | 89% | 2707 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 48,124 psi | 87% | 2618 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 49,081 psi | 89% | 2618 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 47,166 psi | 86% | 2566 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 47,384 psi | 86% | 2543 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 46,746 psi | 85% | 2717 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 48,631 psi | 88% | 2638 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 49,153 psi | 89% | 2657 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 47,950 psi | 87% | 2713 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 48,501 psi | 88% | 2749 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,230 psi | 66% | 2530 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,929 psi | 72% | 2674 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 47,253 psi | 86% | 2628 fps | 99.7% |
| Bofors RP3 | <<locked>> | 90% | 48,617 psi | 88% | 2648 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 49,472 psi | 90% | 2621 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 49,124 psi | 89% | 2549 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 49,211 psi | 89% | 2644 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 49,719 psi | 90% | 2661 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 96% | 48,689 psi | 88% | 2707 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 92% | 46,876 psi | 85% | 2621 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 84% | 48,588 psi | 88% | 2628 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,978 psi | 85% | 2641 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 47,050 psi | 85% | 2654 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 49,429 psi | 90% | 2740 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,404 psi | 64% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 49,458 psi | 90% | 2625 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 47,993 psi | 87% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 48,544 psi | 88% | 2598 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,660 psi | 88% | 2575 fps | 98% |
| IMR 4350 | <<locked>> | 98% | 49,182 psi | 89% | 2644 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,341 psi | 88% | 2605 fps | 97.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,864 psi | 90% | 2703 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 47,326 psi | 86% | 2638 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 47,166 psi | 86% | 2566 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 47,224 psi | 86% | 2592 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 48,138 psi | 87% | 2546 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 48,312 psi | 88% | 2595 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 47,384 psi | 86% | 2598 fps | 98.9% |
| Lovex S070 | <<locked>> | 96% | 47,776 psi | 87% | 2628 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 46,934 psi | 85% | 2562 fps | 100% |
| Norma 202 | <<locked>> | 84% | 47,442 psi | 86% | 2569 fps | 100% |
| Norma 203B | <<locked>> | 88% | 48,414 psi | 88% | 2644 fps | 100% |
| Norma 204 | <<locked>> | 98% | 49,443 psi | 90% | 2687 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 40,263 psi | 73% | 2635 fps | 96.2% |
| Norma URP | <<locked>> | 98% | 48,414 psi | 88% | 2697 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 48,269 psi | 88% | 2664 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 47,500 psi | 86% | 2697 fps | 98.8% |
| Ramshot TAC | <<locked>> | 82% | 47,195 psi | 86% | 2585 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 84% | 49,792 psi | 90% | 2651 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,737 psi | 65% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 47,123 psi | 86% | 2595 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 48,834 psi | 89% | 2713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 48,341 psi | 88% | 2746 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 48,588 psi | 88% | 2730 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 48,747 psi | 88% | 2756 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 48,399 psi | 88% | 2549 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 47,485 psi | 86% | 2562 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 48,443 psi | 88% | 2638 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 49,472 psi | 90% | 2621 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 47,384 psi | 86% | 2598 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 47,224 psi | 86% | 2592 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 48,312 psi | 88% | 2595 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 47,776 psi | 87% | 2628 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 46,905 psi | 85% | 2651 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 48,660 psi | 88% | 2612 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 49,458 psi | 90% | 2635 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 48,544 psi | 88% | 2503 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 48,443 psi | 88% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,456 psi | 86% | 2552 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 47,964 psi | 87% | 2507 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 48,153 psi | 87% | 2602 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 49,139 psi | 89% | 2638 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,195 psi | 84% | 2700 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 43,294 psi | 79% | 2592 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 84% | 48,747 psi | 88% | 2490 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 46,905 psi | 85% | 2530 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 47,703 psi | 87% | 2546 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 47,195 psi | 86% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 47,892 psi | 87% | 2648 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 47,427 psi | 86% | 2566 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 49,081 psi | 89% | 2592 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 46,847 psi | 85% | 2654 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,957 psi | 71% | 2595 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 48,225 psi | 88% | 2628 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 46,847 psi | 85% | 2608 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 49,008 psi | 89% | 2710 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,387 psi | 59% | 2536 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 49,168 psi | 89% | 2644 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 46,253 psi | 84% | 2477 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,580 psi | 70% | 2415 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,743 psi | 79% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,743 psi | 79% | 2539 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 41,858 psi | 76% | 2444 fps | 95.6% |
| Accurate 3100 | <<locked>> | 96% | 32,460 psi | 59% | 2395 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 36,521 psi | 66% | 2411 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 28,181 psi | 51% | 2303 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 42,279 psi | 77% | 2520 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 36,013 psi | 65% | 2385 fps | 98.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,353 psi | 80% | 2520 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 44,309 psi | 80% | 2500 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,319 psi | 70% | 2559 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,592 psi | 65% | 2408 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,101 psi | 69% | 2464 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 29,573 psi | 54% | 2323 fps | 95.8% |
| Alliant Reloder-17 | 42.7 gr | 80% | 30,545 psi | 55% | 2385 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 25,338 psi | 46% | 2238 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 30,429 psi | 55% | 2444 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,307 psi | 75% | 2526 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 35,041 psi | 64% | 2415 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 38,667 psi | 70% | 2431 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,267 psi | 84% | 2507 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,960 psi | 78% | 2549 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 35,882 psi | 65% | 2415 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 88% | 37,724 psi | 68% | 2507 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 88% | 41,452 psi | 75% | 2523 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 42,670 psi | 77% | 2530 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 25,295 psi | 46% | 2178 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,450 psi | 70% | 2507 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 90% | 40,045 psi | 73% | 2572 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,194 psi | 48% | 1427 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,046 psi | 74% | 2487 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 42,308 psi | 77% | 2520 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,797 psi | 69% | 2411 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,306 psi | 73% | 2431 fps | 96.1% |
| IMR 4350 | <<locked>> | 90% | 38,551 psi | 70% | 2457 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 37,971 psi | 69% | 2418 fps | 95.4% |
| IMR 4831 | <<locked>> | 82% | 27,876 psi | 51% | 2274 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 39,015 psi | 71% | 2490 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 44,353 psi | 80% | 2520 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,292 psi | 75% | 2500 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,627 psi | 77% | 2457 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 37,652 psi | 68% | 2418 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 32,837 psi | 60% | 2320 fps | 95.4% |
| Lovex S070 | <<locked>> | 86% | 35,143 psi | 64% | 2392 fps | 95% |
| Norma 201 | <<locked>> | 80% | 41,452 psi | 75% | 2474 fps | 100% |
| Norma 202 | <<locked>> | 80% | 41,829 psi | 76% | 2480 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,492 psi | 68% | 2454 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 43,337 psi | 79% | 2582 fps | 95% |
| Norma MRP | <<locked>> | 98% | 37,869 psi | 69% | 2582 fps | 95.4% |
| Norma URP | <<locked>> | 82% | 29,196 psi | 53% | 2313 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 36,970 psi | 67% | 2467 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 34,708 psi | 63% | 2448 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 44,208 psi | 80% | 2533 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,584 psi | 79% | 2552 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,585 psi | 48% | 1467 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 36,506 psi | 66% | 2398 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,842 psi | 72% | 2562 fps | 99.3% |
| ReloadSwiss RS 60 | 42.7 gr | 80% | 32,532 psi | 59% | 2444 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 30,327 psi | 55% | 2372 fps | 95.9% |
| ReloadSwiss RS 70 | 46.6 gr | 86% | 32,808 psi | 60% | 2428 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 45,542 psi | 83% | 2503 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,653 psi | 72% | 2431 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 32,953 psi | 60% | 2362 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 38,667 psi | 70% | 2431 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 32,837 psi | 60% | 2320 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,292 psi | 75% | 2500 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,652 psi | 68% | 2418 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 35,143 psi | 64% | 2392 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,953 psi | 62% | 2411 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,438 psi | 77% | 2510 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,959 psi | 74% | 2497 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,018 psi | 78% | 2421 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,636 psi | 65% | 2303 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 36,376 psi | 66% | 2362 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 42,453 psi | 77% | 2425 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,047 psi | 76% | 2503 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 33,794 psi | 61% | 2365 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 24,511 psi | 44% | 2218 fps | 97% |
| Somchem S385 | <<locked>> | 96% | 37,927 psi | 69% | 2493 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 43,279 psi | 79% | 2411 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,812 psi | 70% | 2405 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,537 psi | 72% | 2418 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,184 psi | 58% | 2306 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 28,558 psi | 52% | 2260 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 44,512 psi | 81% | 2520 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 37,956 psi | 69% | 2415 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 29,936 psi | 54% | 2316 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 88% | 26,687 psi | 48% | 2303 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,601 psi | 52% | 2241 fps | 97.4% |
| Winchester 748 | <<locked>> | 80% | 43,700 psi | 79% | 2562 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 35,476 psi | 64% | 2457 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 92% | 25,280 psi | 46% | 2306 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,059 psi | 73% | 2497 fps | 99.7% |
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 114 powders for 7.5 x 55 Swiss loaded with the .308 | 188gr | Discreet Ballistics Selous Machined Expander. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,601 fps to 2,756 fps. Accurate 3100 gives the best case fill at 100 %, and 114 of the 114 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 188.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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. Alliant Reloder-17, ReloadSwiss RS 70, ReloadSwiss RS 60 rank at the top here: for 7.5 x 55 Swiss with the .308 | 188gr | Discreet Ballistics Selous Machined Expander they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.