Load Specifications
Load data in caliber 7.62 UKM with .308 | 240gr | MAKER Rex Expanding Subsonic bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Winchester StaBALL HD.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 55,274 psi | 87% | 2500 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,666 psi | 89% | 2520 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 56,797 psi | 89% | 2644 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 92% | 57,740 psi | 90% | 2654 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 57,217 psi | 90% | 2582 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 55,071 psi | 86% | 2595 fps | 99.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,794 psi | 83% | 2566 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,297 psi | 74% | 2536 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,464 psi | 90% | 2579 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 57,595 psi | 90% | 2566 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,782 psi | 89% | 2572 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,288 psi | 87% | 2592 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,623 psi | 89% | 2549 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 55,912 psi | 88% | 2615 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,072 psi | 89% | 2638 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 49,052 psi | 77% | 2585 fps | 96.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,086 psi | 88% | 2559 fps | 98.2% |
| Bofors RP15 | <<locked>> | 94% | 54,259 psi | 85% | 2575 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,651 psi | 87% | 2628 fps | 99.9% |
| Bofors RP5 | <<locked>> | 92% | 55,288 psi | 87% | 2592 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 54,926 psi | 86% | 2470 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,317 psi | 85% | 2585 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 54,505 psi | 85% | 2523 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,956 psi | 89% | 2533 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 54,723 psi | 86% | 2536 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,508 psi | 90% | 2572 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,740 psi | 90% | 2493 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,824 psi | 86% | 2690 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,505 psi | 85% | 2559 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,405 psi | 59% | 1549 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,594 psi | 89% | 2510 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,260 psi | 88% | 2490 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 56,768 psi | 89% | 2510 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,709 psi | 87% | 2516 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 94% | 56,840 psi | 89% | 2628 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,917 psi | 67% | 2457 fps | 98.6% |
| Lovex S065 | <<locked>> | 84% | 56,971 psi | 89% | 2487 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,332 psi | 87% | 2490 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 56,478 psi | 89% | 2516 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,667 psi | 90% | 2566 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 43,221 psi | 68% | 2480 fps | 99.9% |
| Norma MRP | <<locked>> | 90% | 54,998 psi | 86% | 2605 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,926 psi | 86% | 2503 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,766 psi | 84% | 2595 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 86% | 57,334 psi | 90% | 2562 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 55,985 psi | 88% | 2589 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,348 psi | 60% | 1588 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,550 psi | 89% | 2543 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,897 psi | 86% | 2569 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 55,347 psi | 87% | 2687 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,317 psi | 85% | 2654 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 88% | 54,679 psi | 86% | 2503 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 90% | 56,420 psi | 88% | 2566 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 54,926 psi | 86% | 2470 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,971 psi | 89% | 2487 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,332 psi | 87% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,057 psi | 88% | 2448 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,057 psi | 88% | 2562 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 55,912 psi | 88% | 2500 fps | 99.4% |
| Somchem S365 | <<locked>> | 86% | 55,651 psi | 87% | 2503 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,797 psi | 89% | 2536 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 56,985 psi | 89% | 2428 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,652 psi | 89% | 2493 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,318 psi | 88% | 2523 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 54,694 psi | 86% | 2536 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 84% | 55,695 psi | 87% | 2500 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,419 psi | 87% | 2533 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,752 psi | 86% | 2605 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 96% | 54,868 psi | 86% | 2595 fps | 99.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 55,419 psi | 87% | 2654 fps | 99.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,359 psi | 82% | 2651 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,898 psi | 88% | 2457 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,505 psi | 85% | 2523 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,766 psi | 86% | 2631 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,637 psi | 89% | 2536 fps | 100% |
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 3100 | <<locked>> | 80% | 37,173 psi | 58% | 2224 fps | 99.5% |
| Accurate 4350 | <<locked>> | 80% | 49,443 psi | 77% | 2425 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,408 psi | 63% | 2379 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 80% | 37,985 psi | 60% | 2323 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 41,147 psi | 64% | 2333 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 80% | 36,811 psi | 58% | 2280 fps | 96.5% |
| ADI AR 2217 | <<locked>> | 86% | 33,272 psi | 52% | 2201 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 82% | 26,542 psi | 42% | 2073 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,539 psi | 65% | 2333 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,413 psi | 74% | 2431 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,147 psi | 64% | 2329 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,130 psi | 58% | 2290 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,926 psi | 56% | 2247 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,024 psi | 49% | 2182 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,421 psi | 62% | 2379 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 42,438 psi | 67% | 2467 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 44,063 psi | 69% | 2362 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 34,592 psi | 54% | 2234 fps | 97% |
| Bofors RP30 | <<locked>> | 84% | 32,605 psi | 51% | 2224 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 37,130 psi | 58% | 2290 fps | 97.9% |
| Bofors RP7 | <<locked>> | 80% | 51,692 psi | 81% | 2425 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 31,763 psi | 50% | 2169 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 51,039 psi | 80% | 2474 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 53,403 psi | 84% | 2484 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 39,305 psi | 62% | 2283 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,580 psi | 60% | 2270 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,686 psi | 70% | 2323 fps | 100% |
| Hodgdon Retumbo | 59 gr | 80% | 30,371 psi | 48% | 2205 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 50,749 psi | 80% | 2507 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,137 psi | 44% | 1385 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,934 psi | 74% | 2372 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,823 psi | 83% | 2444 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 47,065 psi | 74% | 2379 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,799 psi | 64% | 2277 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 80% | 35,491 psi | 56% | 2260 fps | 96.1% |
| IMR 8133 Enduron | <<locked>> | 92% | 33,112 psi | 52% | 2254 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 50,589 psi | 79% | 2402 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,892 psi | 77% | 2398 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,082 psi | 50% | 2119 fps | 98.5% |
| Norma 204 | <<locked>> | 80% | 47,108 psi | 74% | 2415 fps | 99.4% |
| Norma 217 | <<locked>> | 86% | 27,296 psi | 43% | 2123 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 38,928 psi | 61% | 2349 fps | 99.3% |
| Norma URP | <<locked>> | 80% | 48,356 psi | 76% | 2411 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 35,070 psi | 55% | 2267 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 80% | 47,021 psi | 74% | 2418 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,227 psi | 49% | 2165 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,689 psi | 45% | 1414 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,356 psi | 77% | 2448 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,674 psi | 75% | 2470 fps | 100% |
| ReloadSwiss RS 76 | 63.1 gr | 80% | 29,211 psi | 46% | 2182 fps | 96.8% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 37,565 psi | 59% | 2369 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 42,438 psi | 67% | 2313 fps | 98% |
| Rottweil R 905 | <<locked>> | 80% | 40,683 psi | 64% | 2320 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 80% | 51,692 psi | 81% | 2425 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,589 psi | 79% | 2402 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,892 psi | 77% | 2398 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,429 psi | 77% | 2359 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,350 psi | 63% | 2316 fps | 98.7% |
| Somchem S361 | <<locked>> | 80% | 43,149 psi | 68% | 2306 fps | 97.5% |
| Somchem S365 | <<locked>> | 80% | 45,585 psi | 71% | 2372 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,205 psi | 65% | 2300 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 53,621 psi | 84% | 2385 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,676 psi | 78% | 2402 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,708 psi | 56% | 2195 fps | 97.9% |
| Vihtavuori N170 | <<locked>> | 96% | 51,256 psi | 80% | 2487 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 48,994 psi | 77% | 2411 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,176 psi | 63% | 2310 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,972 psi | 61% | 2339 fps | 96.7% |
| Vihtavuori N565 | <<locked>> | 82% | 34,272 psi | 54% | 2234 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 90% | 39,030 psi | 61% | 2379 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 96% | 45,440 psi | 71% | 2533 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,747 psi | 76% | 2369 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,039 psi | 80% | 2474 fps | 100% |
| Winchester StaBALL HD | 60.5 gr | 80% | 32,184 psi | 50% | 2283 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,666 psi | 59% | 2241 fps | 97.9% |
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 75 powders for 7.62 UKM loaded with the .308 | 240gr | MAKER Rex Expanding Subsonic. Hodgdon Retumbo delivers the highest muzzle velocity at 2,690 fps; across all powders the maximum-charge window runs from 1,549 fps to 2,690 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 240.0 gr projectile in 0.308" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for 7.62 UKM with the .308 | 240gr | MAKER Rex Expanding Subsonic they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.