Load Specifications
Bullet:.284 | 128gr | IBEX TRD
Bullet Manufacturer:IBEX
Bullet Weight:128 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7-6.5 PRCW load data
Case Length (l3):2.03"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:68 Grains of Water
Primer Size:Large Rifle (LR)
Max. allowed Pressure:64,977 psi
Recommended Twist Rate:1:11.0
Load data in caliber 7-6.5 PRCW with .284 | 128gr | IBEX TRD bullet and 96 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
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 58,001 psi | 89% | 2949 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,841 psi | 89% | 2986 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 58,639 psi | 90% | 3045 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,651 psi | 86% | 2969 fps | 96.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,092 psi | 68% | 2861 fps | 95.9% |
| Accurate 4064 | <<locked>> | 90% | 57,493 psi | 88% | 3031 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,898 psi | 88% | 3110 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 56,753 psi | 87% | 3054 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 57,522 psi | 89% | 3048 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,666 psi | 86% | 3002 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,753 psi | 87% | 2979 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,434 psi | 87% | 3176 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 58,015 psi | 89% | 3077 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 58,508 psi | 90% | 3100 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 57,087 psi | 88% | 3159 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,984 psi | 85% | 3143 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,800 psi | 64% | 2890 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,920 psi | 72% | 3064 fps | 98.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,536 psi | 87% | 3068 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 55,550 psi | 85% | 3045 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 58,508 psi | 90% | 3054 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,058 psi | 88% | 2982 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,259 psi | 85% | 3035 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,116 psi | 88% | 3136 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 90% | 56,043 psi | 86% | 3051 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 96% | 55,593 psi | 86% | 3100 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 94% | 56,043 psi | 86% | 3058 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 86% | 57,305 psi | 88% | 3064 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,867 psi | 83% | 3035 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 56,768 psi | 87% | 3097 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,999 psi | 86% | 3130 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 55% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 58,305 psi | 90% | 3064 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 57,276 psi | 88% | 3045 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,145 psi | 88% | 3035 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,811 psi | 87% | 3009 fps | 97.6% |
| IMR 4350ᴾ | <<locked>> | 100% | 58,595 psi | 90% | 3081 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,898 psi | 88% | 3035 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 57,130 psi | 88% | 3097 fps | 99.6% |
| IMR 4895 | <<locked>> | 88% | 56,565 psi | 87% | 3077 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 55,666 psi | 86% | 3002 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,000 psi | 88% | 3031 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,043 psi | 86% | 2976 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 57,305 psi | 88% | 3031 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,710 psi | 87% | 3035 fps | 98.7% |
| Lovex S070 | <<locked>> | 98% | 57,595 psi | 89% | 3068 fps | 98% |
| Norma 201 | <<locked>> | 86% | 55,695 psi | 86% | 2995 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,072 psi | 86% | 2999 fps | 100% |
| Norma 203B | <<locked>> | 90% | 57,696 psi | 89% | 3087 fps | 100% |
| Norma URP | <<locked>> | 98% | 55,448 psi | 85% | 3094 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 90% | 58,421 psi | 90% | 3114 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 57,696 psi | 89% | 3140 fps | 98.6% |
| Ramshot TAC | <<locked>> | 84% | 55,695 psi | 86% | 3015 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,637 psi | 86% | 3038 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,449 psi | 87% | 3002 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,361 psi | 56% | 1916 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 58,378 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,217 psi | 87% | 3028 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,376 psi | 85% | 3114 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 58,450 psi | 90% | 3202 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,333 psi | 87% | 3130 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,666 psi | 86% | 3156 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 84% | 56,884 psi | 88% | 2982 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,173 psi | 86% | 2995 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,434 psi | 85% | 3035 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 58,508 psi | 90% | 3054 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,710 psi | 87% | 3035 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,000 psi | 88% | 3031 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,305 psi | 88% | 3031 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,595 psi | 89% | 3068 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 56,666 psi | 87% | 3091 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 58,291 psi | 90% | 3054 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 58,595 psi | 90% | 3074 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,768 psi | 87% | 2933 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,116 psi | 88% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,913 psi | 88% | 2982 fps | 97.6% |
| Somchem S321 | <<locked>> | 82% | 57,058 psi | 88% | 3035 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,362 psi | 87% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 57,711 psi | 89% | 3041 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 58,769 psi | 90% | 3081 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,432 psi | 82% | 3094 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 56,333 psi | 87% | 2890 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,884 psi | 88% | 2913 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,927 psi | 86% | 2963 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,492 psi | 87% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,710 psi | 87% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 57,957 psi | 89% | 3087 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 84% | 56,188 psi | 86% | 3002 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 58,233 psi | 90% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 57,000 psi | 88% | 3094 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,006 psi | 71% | 2972 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 58,247 psi | 90% | 3061 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,057 psi | 86% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,593 psi | 86% | 3100 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,710 psi | 58% | 2894 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 58,711 psi | 90% | 3084 fps | 100% |
Start Load
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 51,474 psi | 79% | 2858 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,107 psi | 69% | 2792 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,474 psi | 79% | 2940 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,979 psi | 75% | 2851 fps | 95.1% |
| Accurate 3100 | <<locked>> | 98% | 41,423 psi | 64% | 2805 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 42,569 psi | 66% | 2785 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,868 psi | 55% | 2707 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 47,369 psi | 73% | 2890 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 80% | 40,205 psi | 62% | 2726 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,284 psi | 76% | 2897 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 49,995 psi | 77% | 2884 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,178 psi | 66% | 2923 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,219 psi | 62% | 2756 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,105 psi | 66% | 2825 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,418 psi | 55% | 2707 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,925 psi | 54% | 2723 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 90% | 31,140 psi | 48% | 2612 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 94% | 38,348 psi | 59% | 2864 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,557 psi | 72% | 2894 fps | 98.3% |
| Bofors RP3 | <<locked>> | 80% | 40,379 psi | 62% | 2769 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 48,834 psi | 75% | 2890 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,865 psi | 78% | 2881 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,573 psi | 75% | 2923 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,156 psi | 82% | 3071 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 80% | 40,930 psi | 63% | 2766 fps | 96.3% |
| Hodgdon H414 | <<locked>> | 90% | 45,905 psi | 71% | 2923 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 92% | 52,562 psi | 81% | 2999 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 47,790 psi | 74% | 2904 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,922 psi | 48% | 2552 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,700 psi | 67% | 2867 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 92% | 48,863 psi | 75% | 3002 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 41% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,571 psi | 70% | 2844 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 47,485 psi | 73% | 2897 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,235 psi | 65% | 2766 fps | 98% |
| IMR 4166 Enduron | <<locked>> | 82% | 47,543 psi | 73% | 2841 fps | 95.7% |
| IMR 4350 | <<locked>> | 94% | 48,936 psi | 75% | 2917 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 47,601 psi | 73% | 2871 fps | 95.6% |
| IMR 4831 | <<locked>> | 86% | 36,796 psi | 57% | 2713 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 44,164 psi | 68% | 2858 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 80% | 49,284 psi | 76% | 2897 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 47,050 psi | 72% | 2874 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,876 psi | 72% | 2818 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 42,525 psi | 65% | 2776 fps | 99.3% |
| Lovex S065 | <<locked>> | 84% | 39,711 psi | 61% | 2710 fps | 95% |
| Lovex S070 | <<locked>> | 90% | 45,179 psi | 70% | 2844 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 46,746 psi | 72% | 2844 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 46,702 psi | 72% | 2848 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,511 psi | 65% | 2812 fps | 98.4% |
| Norma URP | <<locked>> | 84% | 35,636 psi | 55% | 2697 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 41,989 psi | 65% | 2825 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 42,076 psi | 65% | 2851 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 49,269 psi | 76% | 2900 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,805 psi | 75% | 2923 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,084 psi | 82% | 2946 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 42% | 1719 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 54,984 psi | 85% | 2979 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,700 psi | 67% | 2799 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,440 psi | 70% | 2933 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,014 psi | 57% | 2792 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 37,782 psi | 58% | 2776 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 40,118 psi | 62% | 2838 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 50,952 psi | 78% | 2887 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,440 psi | 68% | 2792 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 38,116 psi | 59% | 2713 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 48,834 psi | 75% | 2890 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,711 psi | 61% | 2710 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,050 psi | 72% | 2874 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,525 psi | 65% | 2776 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 45,179 psi | 70% | 2844 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,609 psi | 59% | 2753 fps | 97.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,834 psi | 74% | 2877 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,788 psi | 70% | 2858 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,616 psi | 73% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,885 psi | 61% | 2648 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 47,050 psi | 72% | 2815 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 53,534 psi | 82% | 2979 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,442 psi | 73% | 2792 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,427 psi | 73% | 2874 fps | 99.1% |
| Somchem S355 | <<locked>> | 80% | 38,696 psi | 60% | 2713 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 28,500 psi | 44% | 2536 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 53,432 psi | 82% | 2851 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,863 psi | 74% | 2779 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,034 psi | 68% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,353 psi | 68% | 2779 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,782 psi | 57% | 2644 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 37,231 psi | 57% | 2700 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 49,516 psi | 76% | 2894 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 42,902 psi | 66% | 2769 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,738 psi | 57% | 2703 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 90% | 33,649 psi | 52% | 2697 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,605 psi | 50% | 2562 fps | 96.2% |
| Winchester 748 | <<locked>> | 80% | 49,197 psi | 76% | 2940 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 45,905 psi | 71% | 2923 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 94% | 31,459 psi | 48% | 2697 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,397 psi | 70% | 2861 fps | 99.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 96 powders for 7-6.5 PRCW loaded with the .284 | 128gr | IBEX TRD. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,202 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,202 fps. Accurate 3100 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 128.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-16, Alliant Reloder-23 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.