Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 135gr | Peregrine Bushmaster (VRG-3) Lever bullet and 95 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-26 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.
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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% | 56,115 psi | 88% | 3212 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,520 psi | 85% | 3219 fps | 97.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,199 psi | 82% | 3241 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 56,521 psi | 89% | 3268 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,041 psi | 85% | 3310 fps | 99.7% |
| Accurate High Countryᴾ | <<locked>> | 100% | 57,638 psi | 90% | 3468 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 82% | 55,869 psi | 88% | 3304 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,450 psi | 90% | 3310 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,840 psi | 88% | 3360 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,884 psi | 89% | 3445 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,738 psi | 87% | 3353 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,360 psi | 85% | 3274 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,665 psi | 86% | 3297 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,085 psi | 86% | 3386 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,826 psi | 89% | 3419 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,911 psi | 86% | 3340 fps | 96.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,112 psi | 82% | 3330 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,124 psi | 77% | 3268 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,728 psi | 67% | 3159 fps | 97.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,232 psi | 90% | 3491 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,173 psi | 88% | 3317 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 55,201 psi | 87% | 3291 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,112 psi | 82% | 3330 fps | 96.4% |
| Bofors RP7 | <<locked>> | 90% | 54,781 psi | 86% | 3264 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 86% | 55,738 psi | 87% | 3304 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 56,884 psi | 89% | 3376 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 56,391 psi | 88% | 3327 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 82% | 56,478 psi | 89% | 3314 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,419 psi | 87% | 3301 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,188 psi | 90% | 3353 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,566 psi | 90% | 3415 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,926 psi | 56% | 2110 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,172 psi | 85% | 3258 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,130 psi | 90% | 3297 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,608 psi | 89% | 3291 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,956 psi | 88% | 3264 fps | 98.3% |
| IMR 4350 | <<locked>> | 94% | 56,086 psi | 88% | 3301 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,565 psi | 89% | 3297 fps | 98.4% |
| IMR 4831 | <<locked>> | 94% | 54,839 psi | 86% | 3310 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 56,072 psi | 88% | 3330 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,231 psi | 88% | 3271 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,824 psi | 86% | 3222 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,724 psi | 89% | 3284 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,536 psi | 89% | 3294 fps | 99.3% |
| Lovex S070 | <<locked>> | 92% | 54,418 psi | 85% | 3278 fps | 98.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,931 psi | 67% | 3058 fps | 96.5% |
| Norma 201 | <<locked>> | 82% | 54,491 psi | 85% | 3241 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,361 psi | 87% | 3241 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,653 psi | 90% | 3343 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,014 psi | 89% | 3353 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 55,680 psi | 87% | 3432 fps | 98.4% |
| Norma URP | <<locked>> | 94% | 56,753 psi | 89% | 3363 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 54,868 psi | 86% | 3307 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,753 psi | 87% | 3356 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,550 psi | 57% | 2159 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,825 psi | 87% | 3284 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,651 psi | 87% | 3373 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,115 psi | 88% | 3412 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,273 psi | 85% | 3337 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 57,072 psi | 89% | 3438 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 55,216 psi | 87% | 3245 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,259 psi | 87% | 3284 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,464 psi | 90% | 3327 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 98% | 54,114 psi | 85% | 3327 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 90% | 54,781 psi | 86% | 3264 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,536 psi | 89% | 3294 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,231 psi | 88% | 3271 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,724 psi | 89% | 3284 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,418 psi | 85% | 3278 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,174 psi | 90% | 3350 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,421 psi | 90% | 3304 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,520 psi | 85% | 3268 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,347 psi | 87% | 3173 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,492 psi | 89% | 3173 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,420 psi | 88% | 3238 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 3386 fps | 97.4% |
| Somchem S335 | <<locked>> | 82% | 55,158 psi | 86% | 3169 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,116 psi | 90% | 3291 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,158 psi | 86% | 3278 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 56,043 psi | 88% | 3366 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,795 psi | 86% | 3297 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 82% | 55,927 psi | 88% | 3156 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,477 psi | 87% | 3202 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,985 psi | 88% | 3219 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,782 psi | 89% | 3258 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,216 psi | 87% | 3297 fps | 99.7% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,604 psi | 79% | 3202 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 84% | 54,244 psi | 85% | 3209 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,418 psi | 85% | 3297 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,955 psi | 86% | 3360 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,347 psi | 87% | 3264 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,884 psi | 89% | 3376 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,411 psi | 70% | 3310 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,737 psi | 86% | 3278 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,274 psi | 87% | 3294 fps | 96.8% |
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% | 49,095 psi | 77% | 3100 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,558 psi | 75% | 3084 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 39,088 psi | 61% | 2972 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 46,543 psi | 73% | 3100 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,143 psi | 55% | 2900 fps | 95.6% |
| Accurate High Country | <<locked>> | 98% | 53,650 psi | 84% | 3396 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 52,460 psi | 82% | 3241 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 44,454 psi | 70% | 3064 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 94% | 48,747 psi | 76% | 3222 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,226 psi | 77% | 3301 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 48,733 psi | 76% | 3219 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,672 psi | 70% | 3091 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,906 psi | 75% | 3169 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,708 psi | 54% | 2923 fps | 95.7% |
| Alliant Reloder-17 | 73.8 gr | 80% | 39,349 psi | 62% | 3068 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 94% | 48,066 psi | 75% | 3205 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 48,747 psi | 76% | 3261 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,603 psi | 48% | 2808 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,391 psi | 59% | 3012 fps | 95.1% |
| Alliant Reloder-26 | 83.2 gr | 88% | 35,926 psi | 56% | 3022 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,402 psi | 82% | 3251 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 44,962 psi | 70% | 3100 fps | 99.7% |
| Bofors RP5 | <<locked>> | 98% | 48,747 psi | 76% | 3261 fps | 95.4% |
| Bofors RP7 | <<locked>> | 84% | 45,092 psi | 71% | 3071 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 45,411 psi | 71% | 3107 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 43,047 psi | 67% | 3097 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 49,530 psi | 78% | 3199 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 53,026 psi | 83% | 3255 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,082 psi | 50% | 2802 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,705 psi | 78% | 3225 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 45,847 psi | 72% | 3189 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,774 psi | 42% | 1890 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,836 psi | 80% | 3196 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 53,461 psi | 84% | 3238 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,688 psi | 73% | 3107 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,197 psi | 77% | 3140 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 46,093 psi | 72% | 3107 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,947 psi | 69% | 3048 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 33,895 psi | 53% | 2851 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 49,168 psi | 77% | 3202 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 52,518 psi | 82% | 3212 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,532 psi | 81% | 3166 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,847 psi | 73% | 3107 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 38,551 psi | 60% | 2920 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 41,872 psi | 66% | 3018 fps | 95.3% |
| Lovex S071 | <<locked>> | 98% | 40,089 psi | 63% | 2995 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 51,140 psi | 80% | 3182 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,721 psi | 81% | 3182 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,282 psi | 74% | 3153 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 49,617 psi | 78% | 3215 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 44,730 psi | 70% | 3209 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 35,201 psi | 55% | 2904 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 47,732 psi | 75% | 3176 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 39,407 psi | 62% | 3018 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,238 psi | 43% | 1936 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,585 psi | 71% | 3087 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,822 psi | 81% | 3304 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,887 psi | 66% | 3143 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,143 psi | 55% | 2920 fps | 95.2% |
| ReloadSwiss RS 70 | 76.9 gr | 82% | 37,043 psi | 58% | 2995 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 48,617 psi | 76% | 3127 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,090 psi | 66% | 3031 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 96% | 53,824 psi | 84% | 3264 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 94% | 47,108 psi | 74% | 3186 fps | 95% |
| Rottweil R 907 | <<locked>> | 84% | 45,092 psi | 71% | 3071 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,551 psi | 60% | 2920 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,518 psi | 82% | 3212 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,847 psi | 73% | 3107 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 41,872 psi | 66% | 3018 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,584 psi | 68% | 3094 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,490 psi | 84% | 3235 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,053 psi | 80% | 3205 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,098 psi | 82% | 3120 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,874 psi | 69% | 2963 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 43,207 psi | 68% | 2986 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 49,937 psi | 78% | 3248 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 51,822 psi | 81% | 3114 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,258 psi | 83% | 3225 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 42,641 psi | 67% | 3038 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 31,633 psi | 50% | 2844 fps | 97.7% |
| Somchem S385 | <<locked>> | 92% | 44,570 psi | 70% | 3097 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 52,649 psi | 83% | 3104 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,805 psi | 76% | 3097 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,110 psi | 77% | 3107 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,654 psi | 64% | 2959 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,695 psi | 57% | 2910 fps | 96.1% |
| Vihtavuori N165 | <<locked>> | 98% | 47,137 psi | 74% | 3133 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 47,514 psi | 74% | 3091 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,143 psi | 57% | 2904 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 33,866 psi | 53% | 2900 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,071 psi | 57% | 2877 fps | 98.2% |
| Winchester 760 | <<locked>> | 84% | 43,207 psi | 68% | 3104 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,935 psi | 45% | 2831 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,039 psi | 80% | 3212 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 51,387 psi | 81% | 3222 fps | 95.9% |
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 95 powders for .300 Norma Mag. loaded with the .308 | 135gr | Peregrine Bushmaster (VRG-3) Lever. Alliant Reloder-26 delivers the highest muzzle velocity at 3,491 fps; across all powders the maximum-charge window runs from 2,110 fps to 3,491 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.308" calls for a 1:16.0 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 70, Alliant Reloder-26, Alliant Reloder-17 rank at the top here: for .300 Norma Mag. with the .308 | 135gr | Peregrine Bushmaster (VRG-3) Lever 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.