Load Specifications
Bullet Manufacturer:TWENTY-NINE
Bullet Weight:161 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 | 161gr | TWENTY-NINE Ball Tip bullet and 94 powders. The key underlying parameters are shown in the table above.
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>> | 82% | 56,318 psi | 88% | 2920 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,435 psi | 90% | 2992 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 3038 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,884 psi | 89% | 2976 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,157 psi | 85% | 3031 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 57,159 psi | 90% | 3186 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 86% | 56,652 psi | 89% | 3009 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,230 psi | 87% | 3077 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,536 psi | 89% | 3127 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,260 psi | 88% | 3140 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 55,347 psi | 87% | 3074 fps | 98.1% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 55,347 psi | 87% | 3074 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,638 psi | 90% | 3035 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,172 psi | 85% | 3002 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,911 psi | 86% | 3094 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,173 psi | 88% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,592 psi | 86% | 3061 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 3123 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,460 psi | 82% | 3051 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,585 psi | 71% | 2972 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,724 psi | 89% | 3199 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,937 psi | 80% | 3041 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 54,853 psi | 86% | 2995 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 3123 fps | 98.3% |
| Bofors RP7 | <<locked>> | 88% | 54,317 psi | 85% | 2979 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 55,347 psi | 87% | 3015 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 56,347 psi | 88% | 3087 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 55,941 psi | 88% | 3045 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 56,608 psi | 89% | 3071 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,434 psi | 87% | 3048 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,114 psi | 86% | 3012 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,463 psi | 88% | 3048 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,715 psi | 70% | 3005 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 90% | 56,811 psi | 89% | 3123 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,448 psi | 57% | 1900 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,000 psi | 89% | 3012 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,173 psi | 88% | 2992 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,187 psi | 86% | 2972 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 55,419 psi | 87% | 3015 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,999 psi | 88% | 3012 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 54,563 psi | 86% | 3025 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,622 psi | 87% | 3031 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,679 psi | 86% | 3002 fps | 96.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,882 psi | 84% | 3097 fps | 96.7% |
| Lovex S060 | <<locked>> | 82% | 57,566 psi | 90% | 2976 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,362 psi | 88% | 2986 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,028 psi | 88% | 3002 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 57,537 psi | 90% | 3048 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,383 psi | 73% | 2877 fps | 98.6% |
| Norma 201 | <<locked>> | 82% | 57,609 psi | 90% | 2995 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,072 psi | 89% | 3041 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,318 psi | 88% | 3068 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 55,143 psi | 86% | 3146 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 56,449 psi | 88% | 3074 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,346 psi | 85% | 3012 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,375 psi | 85% | 3114 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 55,332 psi | 87% | 3074 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,747 psi | 76% | 2982 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,101 psi | 58% | 1946 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,143 psi | 86% | 2995 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,709 psi | 87% | 3110 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,998 psi | 85% | 3054 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,405 psi | 88% | 3143 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,773 psi | 70% | 2999 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 54,868 psi | 86% | 2946 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,172 psi | 86% | 2995 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,782 psi | 89% | 3045 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 98% | 57,537 psi | 90% | 3107 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 54,317 psi | 85% | 2979 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,028 psi | 88% | 3002 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 56,362 psi | 88% | 2986 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,537 psi | 90% | 3048 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,594 psi | 89% | 3054 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,595 psi | 90% | 3028 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,869 psi | 88% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,927 psi | 88% | 2959 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,072 psi | 89% | 3104 fps | 98.5% |
| Somchem S355 | <<locked>> | 86% | 54,926 psi | 86% | 2989 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,100 psi | 86% | 2979 fps | 96.1% |
| Somchem S365 | <<locked>> | 94% | 56,028 psi | 88% | 3074 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,418 psi | 85% | 3022 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 55,259 psi | 87% | 2904 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,390 psi | 87% | 2920 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,217 psi | 88% | 2963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,911 psi | 86% | 3012 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,867 psi | 84% | 2999 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 84% | 57,276 psi | 90% | 2966 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,215 psi | 85% | 3015 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 54,984 psi | 86% | 3077 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,405 psi | 87% | 3136 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,447 psi | 85% | 2972 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,347 psi | 88% | 3087 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,718 psi | 75% | 3114 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,433 psi | 85% | 3012 fps | 97.9% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 52,895 psi | 83% | 2871 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,343 psi | 79% | 2874 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 34,635 psi | 54% | 2625 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 50,140 psi | 79% | 2877 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,247 psi | 60% | 2733 fps | 98.1% |
| Accurate High Country | <<locked>> | 92% | 46,340 psi | 73% | 2989 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 47,094 psi | 74% | 2848 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 45,223 psi | 71% | 2890 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 96% | 49,400 psi | 77% | 2999 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,373 psi | 82% | 3074 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 42,482 psi | 67% | 2831 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 42,482 psi | 67% | 2831 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,645 psi | 75% | 2874 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,792 psi | 80% | 2946 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,231 psi | 58% | 2746 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,409 psi | 66% | 2877 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,860 psi | 70% | 2881 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,453 psi | 67% | 2874 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,398 psi | 43% | 2484 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,083 psi | 52% | 2664 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 82% | 31,372 psi | 49% | 2654 fps | 95.2% |
| Bofors RP15 | <<locked>> | 96% | 44,541 psi | 70% | 2917 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 48,066 psi | 75% | 2884 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 42,453 psi | 67% | 2874 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 42,293 psi | 66% | 2753 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 48,385 psi | 76% | 2897 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 40,234 psi | 63% | 2779 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 43,062 psi | 67% | 2802 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 96% | 52,924 psi | 83% | 3005 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,822 psi | 81% | 2986 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,795 psi | 55% | 2635 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,939 psi | 83% | 2995 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,872 psi | 66% | 2936 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 39,305 psi | 62% | 2789 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,166 psi | 43% | 1699 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,461 psi | 84% | 2959 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,545 psi | 78% | 2884 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,808 psi | 81% | 2913 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 40,408 psi | 63% | 2730 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,627 psi | 68% | 2782 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 36,767 psi | 58% | 2680 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 52,127 psi | 82% | 2976 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,285 psi | 80% | 2943 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 50,386 psi | 79% | 3031 fps | 95.8% |
| Lovex S060 | <<locked>> | 80% | 54,070 psi | 85% | 2923 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,763 psi | 78% | 2881 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,220 psi | 65% | 2733 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 39,349 psi | 62% | 2707 fps | 96.1% |
| Lovex S071 | <<locked>> | 92% | 35,824 psi | 56% | 2654 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 54,230 psi | 85% | 2946 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,169 psi | 79% | 2930 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,803 psi | 72% | 2881 fps | 95.8% |
| Norma MRP | <<locked>> | 88% | 38,798 psi | 61% | 2822 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 37,942 psi | 59% | 2726 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 50,749 psi | 80% | 2956 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 47,021 psi | 74% | 2976 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,883 psi | 58% | 2710 fps | 96% |
| Ramshot Magnum | <<locked>> | 96% | 41,974 psi | 66% | 2848 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,818 psi | 44% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,399 psi | 76% | 2877 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,049 psi | 71% | 2933 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,116 psi | 60% | 2749 fps | 97.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,970 psi | 58% | 2756 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,870 psi | 61% | 2851 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 51,648 psi | 81% | 2897 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,194 psi | 71% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 50,038 psi | 78% | 2930 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 90% | 44,063 psi | 69% | 2867 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 42,293 psi | 66% | 2753 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,220 psi | 65% | 2733 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 49,763 psi | 78% | 2881 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,349 psi | 62% | 2707 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,398 psi | 73% | 2884 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,853 psi | 84% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,427 psi | 73% | 2736 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,350 psi | 63% | 2674 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,656 psi | 68% | 2861 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 45,614 psi | 71% | 2831 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,532 psi | 81% | 2920 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 34,519 psi | 54% | 2680 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 39,233 psi | 61% | 2730 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 51,924 psi | 81% | 2858 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,953 psi | 81% | 2867 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,410 psi | 68% | 2753 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,363 psi | 62% | 2723 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 41,205 psi | 65% | 2762 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 50,299 psi | 79% | 2861 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,899 psi | 61% | 2726 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 30,211 psi | 47% | 2562 fps | 96% |
| Vihtavuori N560 | <<locked>> | 96% | 51,808 psi | 81% | 3074 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,624 psi | 61% | 2694 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 40,422 psi | 63% | 2785 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,860 psi | 41% | 2507 fps | 95.5% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,266 psi | 69% | 2831 fps | 95.5% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 94 powders for 7.62 UKM loaded with the .308 | 161gr | TWENTY-NINE Ball Tip. Alliant Reloder-26 delivers the highest muzzle velocity at 3,199 fps; across all powders the maximum-charge window runs from 1,900 fps to 3,199 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 161.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.