Load Specifications
Load data in caliber .300 Blaser Mag. with .310 | 150gr | Rhino Penetrator bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Ramshot Hunter.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 54,969 psi | 90% | 3041 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,113 psi | 87% | 3048 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,024 psi | 82% | 3074 fps | 98.6% |
| Accurate 4064 | <<locked>> | 84% | 51,851 psi | 85% | 3045 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,272 psi | 86% | 3143 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 54,563 psi | 90% | 3130 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 52,330 psi | 86% | 3074 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 53,519 psi | 88% | 3179 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,766 psi | 90% | 3261 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,432 psi | 88% | 3173 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 52,895 psi | 87% | 3100 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,084 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,069 psi | 87% | 3205 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,201 psi | 89% | 3235 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,663 psi | 86% | 3163 fps | 96.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,719 psi | 82% | 3156 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,920 psi | 77% | 3100 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,002 psi | 67% | 2999 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,809 psi | 88% | 3304 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,389 psi | 89% | 3143 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 53,548 psi | 88% | 3117 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,719 psi | 82% | 3156 fps | 96.4% |
| Bofors RP7 | <<locked>> | 90% | 53,287 psi | 87% | 3091 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 86% | 54,056 psi | 89% | 3130 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 54,563 psi | 90% | 3196 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 54,708 psi | 90% | 3153 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,171 psi | 87% | 3123 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 51,590 psi | 85% | 3117 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,795 psi | 90% | 3232 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,129 psi | 59% | 1972 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,794 psi | 87% | 3084 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,100 psi | 90% | 3110 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,621 psi | 90% | 3091 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 54,012 psi | 89% | 3123 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,042 psi | 90% | 3127 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 52,692 psi | 87% | 3133 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 54,418 psi | 89% | 3153 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,752 psi | 90% | 3097 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,664 psi | 88% | 3048 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,054 psi | 85% | 3054 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,868 psi | 90% | 3120 fps | 99.4% |
| Lovex S070 | <<locked>> | 92% | 52,750 psi | 87% | 3104 fps | 98.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,292 psi | 68% | 2907 fps | 96.8% |
| Norma 201 | <<locked>> | 82% | 53,316 psi | 88% | 3068 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,838 psi | 88% | 3064 fps | 100% |
| Norma 203B | <<locked>> | 84% | 52,388 psi | 86% | 3107 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,766 psi | 90% | 3176 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 52,721 psi | 87% | 3251 fps | 98.4% |
| Norma URP | <<locked>> | 94% | 54,592 psi | 90% | 3186 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 53,069 psi | 87% | 3133 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 53,476 psi | 88% | 3182 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 60% | 2018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,244 psi | 89% | 3114 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,911 psi | 89% | 3196 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,824 psi | 88% | 3232 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,083 psi | 86% | 3163 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,563 psi | 90% | 3255 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 53,969 psi | 89% | 3071 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,621 psi | 88% | 3110 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 51,677 psi | 85% | 3146 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 90% | 53,287 psi | 87% | 3091 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,868 psi | 90% | 3120 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,752 psi | 90% | 3097 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 52,054 psi | 85% | 3054 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,750 psi | 87% | 3104 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 51,779 psi | 85% | 3117 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,127 psi | 87% | 3097 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,201 psi | 89% | 2999 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,998 psi | 90% | 2999 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,766 psi | 90% | 3064 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,911 psi | 90% | 3205 fps | 97.5% |
| Somchem S335 | <<locked>> | 82% | 53,954 psi | 89% | 2995 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,824 psi | 88% | 3110 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 53,621 psi | 88% | 3189 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,475 psi | 86% | 3123 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 82% | 54,650 psi | 90% | 2979 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,099 psi | 89% | 3031 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,462 psi | 89% | 3041 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,984 psi | 90% | 3081 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,388 psi | 88% | 3123 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,428 psi | 80% | 3031 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 84% | 52,895 psi | 87% | 3041 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 52,460 psi | 86% | 3127 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,344 psi | 86% | 3186 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,142 psi | 87% | 3091 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,795 psi | 90% | 3199 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,293 psi | 69% | 3143 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 52,924 psi | 87% | 3100 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,620 psi | 86% | 3114 fps | 96.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 48,327 psi | 79% | 2940 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,456 psi | 76% | 2923 fps | 96.2% |
| Accurate 3100 | <<locked>> | 92% | 37,956 psi | 62% | 2831 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 45,716 psi | 75% | 2943 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,301 psi | 56% | 2766 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 80% | 51,097 psi | 84% | 3068 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,453 psi | 71% | 2907 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 46,905 psi | 77% | 3051 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,529 psi | 78% | 3130 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,905 psi | 77% | 3051 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,685 psi | 72% | 2933 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,688 psi | 77% | 3005 fps | 99.5% |
| Alliant Reloder-16 | 60.5 gr | 80% | 33,910 psi | 56% | 2779 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,261 psi | 63% | 2920 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,311 psi | 76% | 3041 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,441 psi | 76% | 3091 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,050 psi | 46% | 2621 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,216 psi | 59% | 2871 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,722 psi | 57% | 2881 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,981 psi | 84% | 3084 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,801 psi | 72% | 2943 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 46,441 psi | 76% | 3091 fps | 95.6% |
| Bofors RP7 | <<locked>> | 82% | 41,394 psi | 68% | 2854 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 44,367 psi | 73% | 2949 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 41,669 psi | 68% | 2943 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 44,889 psi | 74% | 2969 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,401 psi | 52% | 2667 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,225 psi | 79% | 3058 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 40,988 psi | 67% | 2953 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 44% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,443 psi | 81% | 3025 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,687 psi | 75% | 2943 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,964 psi | 79% | 2969 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 41,930 psi | 69% | 2887 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,321 psi | 66% | 2831 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 33,156 psi | 54% | 2717 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 47,892 psi | 79% | 3038 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 51,184 psi | 84% | 3041 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,285 psi | 83% | 2992 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,774 psi | 75% | 2943 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,826 psi | 62% | 2776 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 40,886 psi | 67% | 2867 fps | 95.7% |
| Lovex S071 | <<locked>> | 96% | 36,318 psi | 60% | 2792 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 50,111 psi | 82% | 3015 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,575 psi | 83% | 3012 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,064 psi | 76% | 2992 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 47,776 psi | 78% | 3048 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 40,059 psi | 66% | 2982 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 34,447 psi | 57% | 2766 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 80% | 46,267 psi | 76% | 3012 fps | 99.7% |
| Ramshot Hunter | 67.4 gr | 84% | 38,247 psi | 63% | 2871 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 45% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,440 psi | 73% | 2927 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,285 psi | 83% | 3133 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,683 psi | 67% | 2986 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,055 psi | 56% | 2779 fps | 95.8% |
| ReloadSwiss RS 70 | 67.8 gr | 82% | 35,868 psi | 59% | 2848 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 47,659 psi | 78% | 2963 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,307 psi | 68% | 2884 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 94% | 45,136 psi | 74% | 3018 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 82% | 41,394 psi | 68% | 2854 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,826 psi | 62% | 2776 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,184 psi | 84% | 3041 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,774 psi | 75% | 2943 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,886 psi | 67% | 2867 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,395 psi | 70% | 2940 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,777 psi | 82% | 3038 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,068 psi | 84% | 2949 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,989 psi | 71% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,523 psi | 65% | 2772 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,730 psi | 73% | 3015 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 50,763 psi | 83% | 2946 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,771 psi | 69% | 2884 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 30,922 psi | 51% | 2713 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 43,018 psi | 71% | 2940 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 51,561 psi | 85% | 2936 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,732 psi | 78% | 2933 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,109 psi | 79% | 2943 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,871 psi | 65% | 2812 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,708 psi | 59% | 2766 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 45,237 psi | 74% | 2972 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 46,398 psi | 76% | 2930 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,346 psi | 58% | 2766 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 30,734 psi | 50% | 2710 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,273 psi | 58% | 2740 fps | 98.6% |
| Winchester 760 | <<locked>> | 84% | 41,843 psi | 69% | 2946 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,340 psi | 47% | 2717 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,545 psi | 81% | 3041 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,832 psi | 75% | 2986 fps | 95.1% |
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 89 powders for .300 Blaser Mag. loaded with the .310 | 150gr | Rhino Penetrator. Alliant Reloder-26 delivers the highest muzzle velocity at 3,304 fps; across all powders the maximum-charge window runs from 1,972 fps to 3,304 fps. Accurate 3100 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.31" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, 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. Alliant Reloder-16, ReloadSwiss RS 70, Ramshot Hunter rank at the top here: for .300 Blaser Mag. with the .310 | 150gr | Rhino Penetrator 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.