Load Specifications
Load data in caliber 6.5 PRC with .264 | 97gr | IBEX TRD bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 58,392 psi | 90% | 3222 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,246 psi | 87% | 3205 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,881 psi | 81% | 3238 fps | 98.2% |
| Accurate 4064 | <<locked>> | 86% | 58,407 psi | 90% | 3278 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 58,508 psi | 90% | 3369 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 56,231 psi | 87% | 3287 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 88% | 57,276 psi | 88% | 3291 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 55,216 psi | 85% | 3327 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 82% | 58,233 psi | 90% | 3287 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,260 psi | 87% | 3419 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 58,349 psi | 90% | 3320 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 58,436 psi | 90% | 3343 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 58,117 psi | 89% | 3419 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,869 psi | 86% | 3392 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,943 psi | 89% | 3376 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,994 psi | 75% | 3258 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,236 psi | 67% | 3146 fps | 96.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,217 psi | 87% | 3465 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,231 psi | 87% | 3301 fps | 99.7% |
| Bofors RP3 | <<locked>> | 86% | 56,130 psi | 86% | 3287 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 58,653 psi | 90% | 3307 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 58,711 psi | 90% | 3320 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 56,130 psi | 86% | 3291 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 90% | 57,798 psi | 89% | 3373 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 94% | 57,957 psi | 89% | 3333 fps | 97% |
| Hodgdon H4895 | <<locked>> | 82% | 56,855 psi | 88% | 3301 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 58,726 psi | 90% | 3340 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,087 psi | 88% | 3340 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,768 psi | 87% | 3386 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,318 psi | 56% | 2090 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,652 psi | 87% | 3281 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,927 psi | 86% | 3261 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,173 psi | 86% | 3261 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 58,305 psi | 90% | 3281 fps | 98.2% |
| IMR 4350 | <<locked>> | 94% | 55,666 psi | 86% | 3271 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,565 psi | 87% | 3278 fps | 97.8% |
| IMR 4831 | <<locked>> | 98% | 55,651 psi | 86% | 3304 fps | 99.6% |
| IMR 4895 | <<locked>> | 84% | 56,347 psi | 87% | 3317 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 58,233 psi | 90% | 3287 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 57,145 psi | 88% | 3268 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 58,407 psi | 90% | 3261 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,305 psi | 88% | 3271 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,855 psi | 88% | 3274 fps | 98.9% |
| Lovex S070 | <<locked>> | 94% | 58,247 psi | 90% | 3317 fps | 98.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,179 psi | 68% | 3068 fps | 96.2% |
| Norma 201 | <<locked>> | 82% | 55,637 psi | 86% | 3238 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,753 psi | 86% | 3228 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,769 psi | 89% | 3327 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,318 psi | 87% | 3323 fps | 96.1% |
| Norma MRPᴾ | <<locked>> | 100% | 54,984 psi | 85% | 3406 fps | 97.8% |
| Norma URP | <<locked>> | 94% | 56,565 psi | 87% | 3343 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 86% | 58,624 psi | 90% | 3353 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,172 psi | 85% | 3333 fps | 98.5% |
| Ramshot TAC | <<locked>> | 82% | 58,740 psi | 90% | 3310 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 58,711 psi | 90% | 3327 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,028 psi | 57% | 2139 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,043 psi | 86% | 3264 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,564 psi | 86% | 3353 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,564 psi | 86% | 3396 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 58,001 psi | 89% | 3386 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,405 psi | 87% | 3409 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 84% | 56,086 psi | 86% | 3235 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,883 psi | 86% | 3278 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,130 psi | 88% | 3360 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 92% | 58,653 psi | 90% | 3307 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,855 psi | 88% | 3274 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,145 psi | 88% | 3268 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,305 psi | 88% | 3271 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 58,247 psi | 90% | 3317 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,898 psi | 88% | 3330 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,870 psi | 89% | 3287 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 58,320 psi | 90% | 3314 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,028 psi | 86% | 3163 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,739 psi | 87% | 3159 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,768 psi | 87% | 3219 fps | 98% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,623 psi | 87% | 3353 fps | 96.6% |
| Somchem S335 | <<locked>> | 82% | 55,970 psi | 86% | 3159 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,290 psi | 88% | 3274 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,927 psi | 86% | 3274 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,593 psi | 86% | 3350 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 58,218 psi | 90% | 3337 fps | 97.7% |
| Unknown powder | <<locked>> | 92% | 57,058 psi | 88% | 3350 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 84% | 55,883 psi | 86% | 3140 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,115 psi | 86% | 3196 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,376 psi | 85% | 3196 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,130 psi | 88% | 3251 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,551 psi | 89% | 3314 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 84% | 55,463 psi | 85% | 3225 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 58,247 psi | 90% | 3369 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,897 psi | 84% | 3346 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 58,668 psi | 90% | 3301 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,798 psi | 89% | 3373 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,585 psi | 69% | 3297 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,652 psi | 87% | 3297 fps | 96.3% |
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% | 51,721 psi | 80% | 3120 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 49,632 psi | 76% | 3084 fps | 95.7% |
| Accurate 3100 | <<locked>> | 92% | 40,712 psi | 63% | 2989 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 48,834 psi | 75% | 3120 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,985 psi | 57% | 2930 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 52,910 psi | 81% | 3228 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 45,005 psi | 69% | 3054 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 96% | 51,851 psi | 80% | 3261 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 54,795 psi | 84% | 3228 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,298 psi | 76% | 3287 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,818 psi | 71% | 3094 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,602 psi | 75% | 3163 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,766 psi | 55% | 2927 fps | 95.5% |
| Alliant Reloder-17 | 50.2 gr | 80% | 40,234 psi | 62% | 3074 fps | 98.6% |
| Alliant Reloder-19 | <<locked>> | 96% | 51,213 psi | 79% | 3251 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 32,169 psi | 50% | 2838 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 98% | 40,741 psi | 63% | 3081 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 88% | 37,202 psi | 57% | 3038 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,663 psi | 81% | 3238 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 46,485 psi | 72% | 3110 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 46,180 psi | 71% | 3068 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 55,187 psi | 85% | 3264 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 46,615 psi | 72% | 3107 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 82% | 44,541 psi | 69% | 3114 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 90% | 51,242 psi | 79% | 3209 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 53,519 psi | 82% | 3241 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,518 psi | 52% | 2822 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,311 psi | 73% | 3163 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 46,006 psi | 71% | 3173 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 42% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,500 psi | 73% | 3114 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 49,661 psi | 76% | 3159 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,440 psi | 68% | 3035 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,485 psi | 72% | 3054 fps | 95.7% |
| IMR 4350 | <<locked>> | 88% | 46,369 psi | 71% | 3091 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 44,440 psi | 68% | 3035 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 36,637 psi | 56% | 2904 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 49,850 psi | 77% | 3199 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 54,795 psi | 84% | 3228 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 53,606 psi | 83% | 3212 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,808 psi | 80% | 3146 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 47,906 psi | 74% | 3107 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 40,016 psi | 62% | 2930 fps | 95.3% |
| Lovex S070 | <<locked>> | 84% | 43,236 psi | 67% | 3022 fps | 95% |
| Lovex S071 | <<locked>> | 98% | 41,626 psi | 64% | 3012 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 52,359 psi | 81% | 3179 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,692 psi | 81% | 3182 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,008 psi | 74% | 3150 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 52,808 psi | 81% | 3258 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 44,947 psi | 69% | 3196 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 36,448 psi | 56% | 2920 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 48,211 psi | 74% | 3169 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 42,844 psi | 66% | 3084 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 55,056 psi | 85% | 3245 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 55,027 psi | 85% | 3264 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 43% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,557 psi | 72% | 3084 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,112 psi | 80% | 3294 fps | 99.5% |
| ReloadSwiss RS 60 | 50.2 gr | 80% | 42,569 psi | 66% | 3143 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,361 psi | 56% | 2936 fps | 95.1% |
| ReloadSwiss RS 70 | 53.5 gr | 84% | 40,437 psi | 62% | 3064 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 49,908 psi | 77% | 3127 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 43,685 psi | 67% | 3045 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 96% | 50,473 psi | 78% | 3235 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 46,180 psi | 71% | 3068 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,016 psi | 62% | 2930 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,606 psi | 83% | 3212 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,906 psi | 74% | 3107 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 43,236 psi | 67% | 3022 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,164 psi | 68% | 3091 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 54,114 psi | 83% | 3225 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,401 psi | 79% | 3192 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,605 psi | 81% | 3107 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,556 psi | 69% | 2956 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 44,324 psi | 68% | 2982 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 50,009 psi | 77% | 3232 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 52,736 psi | 81% | 3110 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,577 psi | 82% | 3212 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 43,947 psi | 68% | 3045 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 33,257 psi | 51% | 2874 fps | 97.9% |
| Somchem S385 | <<locked>> | 94% | 48,269 psi | 74% | 3153 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 39,059 psi | 60% | 2976 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 49,821 psi | 77% | 3045 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,632 psi | 76% | 3094 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,197 psi | 76% | 3094 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,811 psi | 58% | 2877 fps | 99% |
| Vihtavuori N160 | <<locked>> | 80% | 39,189 psi | 60% | 2949 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 80% | 49,153 psi | 76% | 3117 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,030 psi | 62% | 3002 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 84% | 33,214 psi | 51% | 2871 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,173 psi | 57% | 2884 fps | 98.1% |
| Winchester 760 | <<locked>> | 82% | 44,541 psi | 69% | 3114 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 88% | 30,661 psi | 47% | 2871 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,721 psi | 81% | 3228 fps | 95.5% |
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 110 powders for 6.5 PRC loaded with the .264 | 97gr | IBEX TRD. Alliant Reloder-26 delivers the highest muzzle velocity at 3,465 fps; across all powders the maximum-charge window runs from 2,090 fps to 3,465 fps. Accurate 3100 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 97.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, 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. ReloadSwiss RS 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 6.5 PRC with the .264 | 97gr | IBEX TRD they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Bofors RP15, Hodgdon H4831 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.