Load Specifications
Load data in caliber 6.5 Rem. SA Ultra Mag. with .264 | 105gr | Lehigh Defense Match Solid bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 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% | 57,246 psi | 88% | 3123 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,955 psi | 85% | 3130 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,794 psi | 81% | 3163 fps | 98.9% |
| Accurate 4064 | <<locked>> | 86% | 57,624 psi | 89% | 3179 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,969 psi | 85% | 3232 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 57,754 psi | 89% | 3379 fps | 96.8% |
| ADI AR 2206H | <<locked>> | 82% | 56,463 psi | 87% | 3209 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,812 psi | 89% | 3215 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,072 psi | 86% | 3271 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 58,653 psi | 90% | 3205 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,464 psi | 88% | 3353 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 56,072 psi | 86% | 3264 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 58,639 psi | 90% | 3241 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 58,740 psi | 90% | 3264 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,579 psi | 86% | 3294 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,971 psi | 88% | 3320 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,259 psi | 85% | 3255 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,591 psi | 81% | 3251 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,501 psi | 76% | 3186 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,221 psi | 66% | 3084 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,508 psi | 88% | 3402 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,681 psi | 87% | 3225 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 55,927 psi | 86% | 3202 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,591 psi | 81% | 3251 fps | 96.9% |
| Bofors RP7 | <<locked>> | 90% | 55,506 psi | 85% | 3179 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 86% | 56,478 psi | 87% | 3219 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 57,101 psi | 88% | 3284 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 90% | 57,014 psi | 88% | 3241 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 82% | 57,130 psi | 88% | 3222 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,912 psi | 86% | 3209 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,696 psi | 89% | 3261 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,798 psi | 89% | 3323 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,230 psi | 56% | 2028 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 58,363 psi | 90% | 3222 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,986 psi | 89% | 3202 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,174 psi | 88% | 3196 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,391 psi | 87% | 3173 fps | 98.7% |
| IMR 4350 | <<locked>> | 94% | 56,405 psi | 87% | 3209 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,014 psi | 88% | 3209 fps | 98.7% |
| IMR 4831 | <<locked>> | 94% | 55,303 psi | 85% | 3219 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 56,637 psi | 87% | 3238 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 58,653 psi | 90% | 3205 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 57,000 psi | 88% | 3182 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,376 psi | 85% | 3130 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,319 psi | 88% | 3189 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,174 psi | 88% | 3205 fps | 99.5% |
| Lovex S070 | <<locked>> | 94% | 58,595 psi | 90% | 3248 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,685 psi | 67% | 2992 fps | 97.2% |
| Norma 201 | <<locked>> | 84% | 58,726 psi | 90% | 3202 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,869 psi | 86% | 3146 fps | 100% |
| Norma 203B | <<locked>> | 86% | 58,030 psi | 89% | 3248 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,188 psi | 88% | 3264 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 55,796 psi | 86% | 3343 fps | 98.7% |
| Norma URP | <<locked>> | 94% | 57,319 psi | 88% | 3274 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,593 psi | 86% | 3219 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,985 psi | 86% | 3268 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,869 psi | 57% | 2077 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,217 psi | 86% | 3196 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,101 psi | 86% | 3278 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,652 psi | 87% | 3320 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 58,740 psi | 90% | 3314 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 57,305 psi | 88% | 3343 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 55,883 psi | 86% | 3150 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,072 psi | 86% | 3196 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,841 psi | 89% | 3241 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 58,421 psi | 90% | 3304 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 55,506 psi | 85% | 3179 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,174 psi | 88% | 3205 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,000 psi | 88% | 3182 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,319 psi | 88% | 3189 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 58,595 psi | 90% | 3248 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,740 psi | 89% | 3261 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,914 psi | 89% | 3212 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 58,769 psi | 90% | 3235 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,970 psi | 86% | 3077 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,159 psi | 88% | 3081 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,014 psi | 88% | 3153 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,914 psi | 89% | 3297 fps | 97.8% |
| Somchem S335 | <<locked>> | 82% | 55,651 psi | 86% | 3071 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,682 psi | 89% | 3199 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,927 psi | 86% | 3192 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 56,565 psi | 87% | 3278 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,361 psi | 85% | 3215 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 82% | 56,420 psi | 87% | 3058 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,246 psi | 87% | 3110 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,623 psi | 87% | 3123 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,435 psi | 88% | 3166 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,840 psi | 86% | 3212 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,894 psi | 78% | 3120 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 86% | 58,523 psi | 90% | 3173 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 58,595 psi | 90% | 3271 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,361 psi | 85% | 3274 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,608 psi | 86% | 3173 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,435 psi | 88% | 3291 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,831 psi | 69% | 3238 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,158 psi | 85% | 3186 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,506 psi | 85% | 3205 fps | 97.2% |
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% | 50,415 psi | 78% | 3022 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,225 psi | 74% | 3005 fps | 96.4% |
| Accurate 3100 | <<locked>> | 90% | 37,449 psi | 58% | 2851 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 47,732 psi | 73% | 3022 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,100 psi | 56% | 2844 fps | 96.6% |
| Accurate High Country | <<locked>> | 96% | 50,154 psi | 77% | 3238 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 53,026 psi | 82% | 3150 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,092 psi | 69% | 2986 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 49,139 psi | 76% | 3140 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 55,100 psi | 85% | 3153 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,763 psi | 77% | 3215 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 49,168 psi | 76% | 3136 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,411 psi | 70% | 3012 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,544 psi | 75% | 3087 fps | 99.6% |
| Alliant Reloder-16 | 47.2 gr | 80% | 35,447 psi | 55% | 2858 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,059 psi | 62% | 2999 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 48,588 psi | 75% | 3127 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 45,803 psi | 70% | 3114 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,370 psi | 45% | 2694 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,679 psi | 55% | 2887 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 86% | 34,011 psi | 52% | 2890 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,968 psi | 81% | 3163 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 45,672 psi | 70% | 3022 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 45,803 psi | 70% | 3114 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 42,989 psi | 66% | 2933 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 46,253 psi | 71% | 3031 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 40,785 psi | 63% | 2959 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 84% | 46,876 psi | 72% | 3051 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 53,592 psi | 82% | 3163 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,764 psi | 50% | 2740 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,415 psi | 78% | 3140 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 43,134 psi | 66% | 3038 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,992 psi | 42% | 1814 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,416 psi | 79% | 3110 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,259 psi | 83% | 3146 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,369 psi | 73% | 3022 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,748 psi | 77% | 3054 fps | 97.6% |
| IMR 4350 | <<locked>> | 86% | 43,830 psi | 67% | 2969 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,684 psi | 64% | 2907 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 34,780 psi | 54% | 2795 fps | 96.2% |
| IMR 4895 | <<locked>> | 80% | 49,792 psi | 77% | 3120 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 55,100 psi | 85% | 3153 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 53,403 psi | 82% | 3123 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,025 psi | 80% | 3071 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,630 psi | 73% | 3025 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,378 psi | 61% | 2851 fps | 96.2% |
| Lovex S070 | <<locked>> | 82% | 40,074 psi | 62% | 2887 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 38,334 psi | 59% | 2871 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 52,011 psi | 80% | 3094 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,446 psi | 81% | 3094 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,950 psi | 74% | 3071 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 49,893 psi | 77% | 3130 fps | 95.8% |
| Norma MRP | <<locked>> | 92% | 42,192 psi | 65% | 3068 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 36,056 psi | 55% | 2841 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 80% | 48,370 psi | 74% | 3094 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 37,347 psi | 57% | 2884 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 42% | 1857 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,354 psi | 71% | 3012 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,489 psi | 81% | 3219 fps | 99.9% |
| ReloadSwiss RS 60 | 50.8 gr | 80% | 42,612 psi | 66% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,824 psi | 55% | 2858 fps | 96.1% |
| ReloadSwiss RS 70 | 51.6 gr | 80% | 35,099 psi | 54% | 2861 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 49,487 psi | 76% | 3041 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,062 psi | 66% | 2963 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 54,230 psi | 83% | 3176 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 94% | 47,718 psi | 73% | 3110 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 82% | 42,989 psi | 66% | 2933 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,378 psi | 61% | 2851 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,403 psi | 82% | 3123 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,630 psi | 73% | 3025 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 40,074 psi | 62% | 2887 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,193 psi | 68% | 3018 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 54,070 psi | 83% | 3150 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,576 psi | 79% | 3117 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,736 psi | 81% | 3028 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,498 psi | 68% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,060 psi | 63% | 2848 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 47,282 psi | 73% | 3104 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 52,576 psi | 81% | 3025 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,867 psi | 83% | 3140 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,526 psi | 67% | 2966 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 32,547 psi | 50% | 2792 fps | 98.5% |
| Somchem S385 | <<locked>> | 90% | 42,409 psi | 65% | 2966 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 53,229 psi | 82% | 3012 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,574 psi | 76% | 3009 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,864 psi | 77% | 3018 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,466 psi | 64% | 2887 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 37,376 psi | 58% | 2844 fps | 96.8% |
| Vihtavuori N165 | <<locked>> | 96% | 44,527 psi | 69% | 2995 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 48,283 psi | 74% | 3009 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,999 psi | 57% | 2844 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 84% | 32,372 psi | 50% | 2782 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,753 psi | 57% | 2812 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 41,031 psi | 63% | 2966 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,789 psi | 43% | 2717 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,488 psi | 79% | 3120 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,109 psi | 74% | 3074 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 97 powders for 6.5 Rem. SA Ultra Mag. loaded with the .264 | 105gr | Lehigh Defense Match Solid. Alliant Reloder-26 delivers the highest muzzle velocity at 3,402 fps; across all powders the maximum-charge window runs from 2,028 fps to 3,402 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 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 105.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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. ReloadSwiss RS 60, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for 6.5 Rem. SA Ultra Mag. with the .264 | 105gr | Lehigh Defense Match Solid 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.