Load Specifications
Bullet Manufacturer:TWENTY-NINE
Bullet Weight:143 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:7.62 UKM load data
Case Length (l3):2.244"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:95.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:12.0
Load data in caliber 7.62 UKM with .308 | 143gr | TWENTY-NINE SILENTIO bullet and 100 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 60 and Alliant Reloder-16.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 55,869 psi | 88% | 3081 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,551 psi | 90% | 3140 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,213 psi | 80% | 3110 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 56,231 psi | 88% | 3136 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,956 psi | 89% | 3235 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 56,086 psi | 88% | 3320 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 82% | 55,376 psi | 87% | 3166 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,449 psi | 88% | 3166 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,491 psi | 85% | 3212 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,566 psi | 90% | 3166 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,767 psi | 87% | 3297 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,404 psi | 85% | 3205 fps | 96.8% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,404 psi | 85% | 3205 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,101 psi | 89% | 3192 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,551 psi | 90% | 3219 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 57,537 psi | 90% | 3297 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,434 psi | 87% | 3274 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,450 psi | 90% | 3261 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,836 psi | 80% | 3189 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,906 psi | 75% | 3133 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,872 psi | 66% | 3025 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,245 psi | 87% | 3340 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,347 psi | 87% | 3179 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 54,418 psi | 85% | 3153 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,836 psi | 80% | 3189 fps | 96.2% |
| Bofors RP7 | <<locked>> | 92% | 57,508 psi | 90% | 3182 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,725 psi | 90% | 3196 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 55,027 psi | 86% | 3166 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 55,521 psi | 87% | 3228 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 90% | 55,477 psi | 87% | 3189 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 82% | 55,970 psi | 88% | 3176 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,244 psi | 85% | 3159 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,173 psi | 88% | 3212 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,159 psi | 88% | 3268 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,013 psi | 56% | 2008 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,869 psi | 89% | 3176 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,289 psi | 88% | 3153 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,796 psi | 87% | 3146 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,216 psi | 87% | 3123 fps | 98.3% |
| IMR 4350 | <<locked>> | 94% | 54,897 psi | 86% | 3156 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,695 psi | 87% | 3156 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 57,334 psi | 90% | 3225 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 55,405 psi | 87% | 3192 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 57,566 psi | 90% | 3166 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,709 psi | 87% | 3140 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,551 psi | 90% | 3136 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,086 psi | 88% | 3143 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,709 psi | 87% | 3156 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 57,014 psi | 89% | 3196 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,351 psi | 66% | 2940 fps | 96.6% |
| Norma 201 | <<locked>> | 84% | 57,493 psi | 90% | 3159 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,708 psi | 86% | 3104 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,768 psi | 89% | 3202 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,782 psi | 87% | 3209 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 54,201 psi | 85% | 3284 fps | 98.3% |
| Norma URP | <<locked>> | 94% | 55,637 psi | 87% | 3219 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 53,998 psi | 85% | 3169 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,520 psi | 85% | 3212 fps | 98.9% |
| Ramshot TAC | <<locked>> | 82% | 57,725 psi | 90% | 3186 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,753 psi | 58% | 2057 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,100 psi | 86% | 3146 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,650 psi | 86% | 3228 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,926 psi | 86% | 3268 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,855 psi | 89% | 3258 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,695 psi | 87% | 3291 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 54,592 psi | 86% | 3104 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,447 psi | 85% | 3146 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,202 psi | 88% | 3182 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 3241 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 92% | 57,508 psi | 90% | 3182 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,709 psi | 87% | 3156 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,709 psi | 87% | 3140 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,086 psi | 88% | 3143 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,014 psi | 89% | 3196 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,188 psi | 88% | 3209 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,724 psi | 89% | 3166 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,421 psi | 90% | 3189 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,926 psi | 86% | 3038 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,695 psi | 87% | 3035 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,724 psi | 87% | 3104 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,941 psi | 88% | 3235 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 54,534 psi | 85% | 3031 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,333 psi | 88% | 3153 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,665 psi | 86% | 3146 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,621 psi | 86% | 3225 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 3215 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 82% | 55,419 psi | 87% | 3022 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,853 psi | 86% | 3068 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,187 psi | 86% | 3081 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,912 psi | 88% | 3117 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,244 psi | 85% | 3159 fps | 99.7% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,487 psi | 78% | 3064 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 86% | 57,116 psi | 90% | 3127 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,145 psi | 90% | 3222 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,664 psi | 84% | 3219 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,215 psi | 85% | 3127 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,738 psi | 87% | 3232 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,352 psi | 68% | 3173 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,508 psi | 90% | 3196 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,853 psi | 84% | 3150 fps | 96.6% |
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% | 48,921 psi | 77% | 2976 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,239 psi | 74% | 2956 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 38,682 psi | 61% | 2858 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 46,267 psi | 73% | 2972 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,896 psi | 55% | 2789 fps | 95.8% |
| Accurate High Country | <<locked>> | 98% | 52,156 psi | 82% | 3248 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 51,721 psi | 81% | 3104 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 44,092 psi | 69% | 2940 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 94% | 47,718 psi | 75% | 3081 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,824 psi | 84% | 3104 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,414 psi | 76% | 3163 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 47,732 psi | 75% | 3081 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 47,732 psi | 75% | 3081 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,309 psi | 69% | 2966 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,297 psi | 74% | 3038 fps | 99.4% |
| Alliant Reloder-16 | 62.8 gr | 80% | 34,447 psi | 54% | 2805 fps | 95.9% |
| Alliant Reloder-17 | 67.6 gr | 80% | 38,885 psi | 61% | 2946 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,108 psi | 74% | 3068 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,558 psi | 75% | 3123 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,487 psi | 48% | 2707 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,854 psi | 58% | 2894 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 35,418 psi | 56% | 2904 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,764 psi | 81% | 3117 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 44,425 psi | 70% | 2972 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 47,558 psi | 75% | 3123 fps | 95.3% |
| Bofors RP7 | <<locked>> | 84% | 44,715 psi | 70% | 2943 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,983 psi | 85% | 3136 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,918 psi | 70% | 2979 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 42,409 psi | 66% | 2972 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 48,660 psi | 76% | 3061 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 52,330 psi | 82% | 3117 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,821 psi | 50% | 2694 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,994 psi | 77% | 3091 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 44,933 psi | 70% | 3051 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 42% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,053 psi | 78% | 3061 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 52,881 psi | 83% | 3104 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,369 psi | 73% | 2979 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,689 psi | 76% | 3005 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 45,440 psi | 71% | 2976 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,526 psi | 68% | 2923 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 33,721 psi | 53% | 2743 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 48,530 psi | 76% | 3071 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 53,824 psi | 84% | 3104 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,011 psi | 82% | 3077 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,966 psi | 80% | 3031 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,485 psi | 73% | 2979 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 38,247 psi | 60% | 2805 fps | 95.6% |
| Lovex S070 | <<locked>> | 84% | 41,495 psi | 65% | 2894 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 39,711 psi | 62% | 2881 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 50,604 psi | 79% | 3048 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,300 psi | 80% | 3051 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,673 psi | 73% | 3022 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 48,675 psi | 76% | 3081 fps | 95.2% |
| Norma MRP | <<locked>> | 94% | 43,772 psi | 69% | 3074 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 34,867 psi | 55% | 2789 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 47,050 psi | 74% | 3045 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 38,943 psi | 61% | 2897 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 54,114 psi | 85% | 3123 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 43% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,063 psi | 71% | 2959 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,894 psi | 80% | 3163 fps | 99.7% |
| ReloadSwiss RS 60 | 67.6 gr | 80% | 41,321 psi | 65% | 3015 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,693 psi | 54% | 2805 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 36,579 psi | 57% | 2877 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 48,182 psi | 76% | 2995 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,785 psi | 65% | 2910 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 96% | 52,649 psi | 83% | 3120 fps | 95% |
| Rottweil R 905 | <<locked>> | 96% | 49,284 psi | 77% | 3114 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 84% | 44,715 psi | 70% | 2943 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,247 psi | 60% | 2805 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,011 psi | 82% | 3077 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,485 psi | 73% | 2979 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 41,495 psi | 65% | 2894 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,902 psi | 67% | 2966 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,794 psi | 83% | 3100 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,285 psi | 79% | 3068 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,445 psi | 81% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,352 psi | 68% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,815 psi | 67% | 2861 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,820 psi | 77% | 3107 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 51,256 psi | 80% | 2979 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,692 psi | 83% | 3094 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 42,221 psi | 66% | 2913 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 31,444 psi | 49% | 2740 fps | 97.9% |
| Somchem S385 | <<locked>> | 92% | 43,888 psi | 69% | 2972 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 51,953 psi | 81% | 2969 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,225 psi | 76% | 2966 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,559 psi | 76% | 2976 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,306 psi | 63% | 2841 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,260 psi | 57% | 2795 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 98% | 46,108 psi | 72% | 3002 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 46,949 psi | 74% | 2963 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,795 psi | 56% | 2792 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 84% | 31,270 psi | 49% | 2726 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,853 psi | 56% | 2766 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 42,569 psi | 67% | 2976 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,877 psi | 45% | 2733 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,430 psi | 79% | 3081 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,227 psi | 79% | 3084 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 100 powders for 7.62 UKM loaded with the .308 | 143gr | TWENTY-NINE SILENTIO. Alliant Reloder-26 delivers the highest muzzle velocity at 3,340 fps; across all powders the maximum-charge window runs from 2,008 fps to 3,340 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 143.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Alliant Reloder-19 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 60, Alliant Reloder-16 rank at the top here: for 7.62 UKM with the .308 | 143gr | TWENTY-NINE SILENTIO 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.