Load Specifications
Load data in caliber 6.5 mm Rem. Mag. with .264 | 105gr | Lehigh Defense Match Solid bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 55,245 psi | 88% | 3084 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,897 psi | 87% | 3117 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,028 psi | 89% | 3182 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,014 psi | 90% | 3173 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,774 psi | 73% | 3068 fps | 97.5% |
| Accurate 4064 | <<locked>> | 88% | 54,810 psi | 87% | 3169 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,274 psi | 88% | 3268 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 54,679 psi | 87% | 3202 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,666 psi | 88% | 3199 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,287 psi | 84% | 3238 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,000 psi | 90% | 3202 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,563 psi | 86% | 3117 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,723 psi | 87% | 3333 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,231 psi | 89% | 3228 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,594 psi | 90% | 3251 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,115 psi | 89% | 3327 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,838 psi | 85% | 3307 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,272 psi | 83% | 3225 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,207 psi | 68% | 3097 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,008 psi | 78% | 3291 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,563 psi | 86% | 3215 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 56,927 psi | 90% | 3245 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,652 psi | 90% | 3212 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,926 psi | 87% | 3123 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,855 psi | 90% | 3232 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,940 psi | 85% | 3199 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 54,085 psi | 86% | 3258 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 92% | 54,317 psi | 86% | 3215 fps | 97% |
| Hodgdon H4895 | <<locked>> | 84% | 55,259 psi | 88% | 3215 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,173 psi | 89% | 3241 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,114 psi | 87% | 3248 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,679 psi | 87% | 3297 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 57% | 2005 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,289 psi | 89% | 3212 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,288 psi | 88% | 3189 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,347 psi | 88% | 3186 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,056 psi | 87% | 3163 fps | 98.2% |
| IMR 4350 | <<locked>> | 96% | 53,809 psi | 85% | 3182 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,114 psi | 87% | 3189 fps | 98.1% |
| IMR 4831 | <<locked>> | 98% | 55,579 psi | 88% | 3251 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 54,505 psi | 86% | 3228 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,000 psi | 90% | 3202 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,752 psi | 87% | 3173 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,795 psi | 85% | 3120 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,332 psi | 88% | 3179 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,810 psi | 87% | 3186 fps | 99.1% |
| Lovex S070 | <<locked>> | 96% | 55,767 psi | 88% | 3222 fps | 98.5% |
| Norma 201 | <<locked>> | 86% | 57,000 psi | 90% | 3199 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,853 psi | 85% | 3140 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,811 psi | 88% | 3235 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,447 psi | 86% | 3235 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 48,617 psi | 77% | 3241 fps | 97.1% |
| Norma URP | <<locked>> | 96% | 54,012 psi | 86% | 3248 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 56,507 psi | 90% | 3261 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,478 psi | 90% | 3304 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 53,650 psi | 85% | 3159 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,058 psi | 90% | 3241 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,158 psi | 57% | 2047 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,143 psi | 86% | 3176 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 53,548 psi | 85% | 3264 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,330 psi | 85% | 3301 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,998 psi | 87% | 3287 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,085 psi | 86% | 3317 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 54,186 psi | 86% | 3120 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,012 psi | 86% | 3140 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,797 psi | 90% | 3235 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,155 psi | 81% | 3202 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 94% | 56,652 psi | 90% | 3212 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,810 psi | 87% | 3186 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,752 psi | 87% | 3173 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,332 psi | 88% | 3179 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,767 psi | 88% | 3222 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,998 psi | 87% | 3245 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,840 psi | 89% | 3199 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,550 psi | 90% | 3222 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,621 psi | 87% | 3074 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,158 psi | 87% | 3071 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,853 psi | 87% | 3130 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,662 psi | 80% | 3199 fps | 96.1% |
| Somchem S335 | <<locked>> | 84% | 54,201 psi | 86% | 3071 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,608 psi | 88% | 3189 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,029 psi | 90% | 3235 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,246 psi | 89% | 3307 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,982 psi | 82% | 3182 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 84% | 54,984 psi | 87% | 3054 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,824 psi | 85% | 3100 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,665 psi | 87% | 3120 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,795 psi | 87% | 3150 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,579 psi | 90% | 3245 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 53,940 psi | 85% | 3146 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,217 psi | 89% | 3163 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,492 psi | 88% | 3248 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,935 psi | 76% | 3182 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,724 psi | 90% | 3212 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,143 psi | 86% | 3196 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,375 psi | 86% | 3261 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,914 psi | 62% | 3120 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,913 psi | 90% | 3235 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 52,054 psi | 83% | 3035 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,831 psi | 71% | 2956 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,489 psi | 83% | 3130 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,847 psi | 74% | 2989 fps | 95.7% |
| Accurate 3100 | <<locked>> | 96% | 39,827 psi | 63% | 2943 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 42,424 psi | 67% | 2953 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 33,852 psi | 54% | 2825 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 48,124 psi | 76% | 3084 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 40,857 psi | 65% | 2917 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 98% | 49,864 psi | 79% | 3173 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,227 psi | 80% | 3091 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,256 psi | 81% | 3068 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,338 psi | 70% | 3133 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,886 psi | 65% | 2946 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,772 psi | 69% | 3015 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 33,707 psi | 53% | 2838 fps | 95.6% |
| Alliant Reloder-17 | 46 gr | 80% | 35,389 psi | 56% | 2913 fps | 98.1% |
| Alliant Reloder-19 | <<locked>> | 98% | 48,979 psi | 78% | 3159 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,457 psi | 47% | 2730 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,200 psi | 54% | 2930 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,529 psi | 75% | 3087 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 40,814 psi | 65% | 2953 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 44,034 psi | 70% | 2972 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,619 psi | 82% | 3071 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,748 psi | 79% | 3117 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,553 psi | 66% | 2956 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 41,321 psi | 65% | 3002 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 88% | 47,848 psi | 76% | 3094 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 48,617 psi | 77% | 3097 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,196 psi | 46% | 2664 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,034 psi | 71% | 3071 fps | 99.8% |
| Hodgdon Superformance | 53.5 gr | 88% | 43,830 psi | 69% | 3081 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 42% | 1795 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,688 psi | 74% | 3045 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 48,559 psi | 77% | 3084 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,931 psi | 68% | 2956 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,295 psi | 72% | 2976 fps | 96.1% |
| IMR 4350 | <<locked>> | 90% | 44,483 psi | 71% | 3005 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,830 psi | 68% | 2949 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 32,735 psi | 52% | 2776 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 44,860 psi | 71% | 3051 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 50,227 psi | 80% | 3091 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,688 psi | 76% | 3058 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,688 psi | 76% | 3009 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 43,004 psi | 68% | 2959 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 37,652 psi | 60% | 2835 fps | 95.4% |
| Lovex S070 | <<locked>> | 86% | 40,741 psi | 65% | 2930 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 46,992 psi | 74% | 3028 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,587 psi | 75% | 3035 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,134 psi | 68% | 3002 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 50,908 psi | 81% | 3173 fps | 95.6% |
| Norma MRP | <<locked>> | 96% | 42,351 psi | 67% | 3100 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 34,011 psi | 54% | 2825 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 43,076 psi | 68% | 3018 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 40,582 psi | 64% | 2992 fps | 95.9% |
| Ramshot TAC | <<locked>> | 80% | 50,154 psi | 79% | 3100 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,980 psi | 79% | 3123 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,079 psi | 43% | 1837 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,785 psi | 66% | 2936 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,485 psi | 74% | 3133 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,623 psi | 60% | 2986 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,475 psi | 53% | 2835 fps | 95% |
| ReloadSwiss RS 70 | 49.1 gr | 84% | 35,766 psi | 57% | 2907 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 51,126 psi | 81% | 3071 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,773 psi | 71% | 2976 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 38,290 psi | 61% | 2887 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 47,790 psi | 76% | 3140 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 86% | 44,034 psi | 70% | 2972 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,652 psi | 60% | 2835 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,688 psi | 76% | 3058 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,004 psi | 68% | 2959 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 40,741 psi | 65% | 2930 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,262 psi | 62% | 2943 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,805 psi | 77% | 3074 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,572 psi | 74% | 3048 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,182 psi | 76% | 2969 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,350 psi | 64% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,250 psi | 67% | 2894 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,326 psi | 75% | 3133 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 47,790 psi | 76% | 2969 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,414 psi | 77% | 3064 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 38,870 psi | 62% | 2890 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 28,616 psi | 45% | 2710 fps | 96.9% |
| Somchem S385 | <<locked>> | 96% | 45,556 psi | 72% | 3061 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 48,602 psi | 77% | 2959 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,527 psi | 71% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,020 psi | 71% | 2959 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,086 psi | 59% | 2818 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 33,127 psi | 53% | 2766 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 50,517 psi | 80% | 3087 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,627 psi | 69% | 2953 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,070 psi | 56% | 2828 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 88% | 31,952 psi | 51% | 2815 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,808 psi | 52% | 2736 fps | 97.4% |
| Winchester 748 | <<locked>> | 80% | 50,459 psi | 80% | 3133 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,553 psi | 66% | 3009 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,891 psi | 44% | 2749 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,412 psi | 74% | 3054 fps | 99.8% |
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 98 powders for 6.5 mm Rem. Mag. loaded with the .264 | 105gr | Lehigh Defense Match Solid. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,333 fps; across all powders the maximum-charge window runs from 2,005 fps to 3,333 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 57–90 %, 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, ADI AR 2209, 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 6.5 mm Rem. 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.