Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC bullet and 85 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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 53,447 psi | 88% | 3182 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,663 psi | 85% | 3166 fps | 96.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,327 psi | 79% | 3186 fps | 97.7% |
| Accurate 4064 | <<locked>> | 86% | 53,737 psi | 88% | 3235 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,099 psi | 89% | 3330 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 82% | 53,011 psi | 87% | 3261 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 88% | 54,259 psi | 89% | 3264 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,055 psi | 87% | 3389 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,665 psi | 90% | 3287 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 51,750 psi | 85% | 3255 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,926 psi | 90% | 3392 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 52,475 psi | 86% | 3363 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,679 psi | 90% | 3346 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,339 psi | 74% | 3212 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,996 psi | 85% | 3419 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,982 psi | 87% | 3271 fps | 99.6% |
| Bofors RP3 | <<locked>> | 86% | 52,127 psi | 86% | 3251 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 51,938 psi | 85% | 3215 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 86% | 52,605 psi | 86% | 3258 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 92% | 52,924 psi | 87% | 3317 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 90% | 53,026 psi | 87% | 3274 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 82% | 53,621 psi | 88% | 3271 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 51,619 psi | 85% | 3251 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,635 psi | 88% | 3307 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,229 psi | 87% | 3350 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 59% | 2090 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,708 psi | 90% | 3274 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,983 psi | 89% | 3258 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,650 psi | 88% | 3245 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,214 psi | 87% | 3219 fps | 97.6% |
| IMR 4350 | <<locked>> | 94% | 52,634 psi | 86% | 3245 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,650 psi | 88% | 3251 fps | 97.6% |
| IMR 4831 | <<locked>> | 96% | 54,563 psi | 90% | 3317 fps | 99.7% |
| IMR 4895 | <<locked>> | 84% | 53,113 psi | 87% | 3291 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 82% | 53,287 psi | 87% | 3235 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,228 psi | 86% | 3179 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 53,867 psi | 88% | 3241 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,330 psi | 88% | 3241 fps | 98.7% |
| Lovex S070 | <<locked>> | 94% | 54,636 psi | 90% | 3287 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 51,967 psi | 85% | 3202 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,402 psi | 86% | 3202 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,375 psi | 89% | 3297 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,171 psi | 87% | 3294 fps | 95.9% |
| Norma MRPᴾ | <<locked>> | 100% | 51,140 psi | 84% | 3363 fps | 97.4% |
| Norma URP | <<locked>> | 94% | 53,026 psi | 87% | 3314 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 84% | 51,445 psi | 84% | 3261 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 94% | 51,851 psi | 85% | 3301 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,521 psi | 60% | 2139 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,779 psi | 87% | 3235 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 52,083 psi | 86% | 3323 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 52,040 psi | 85% | 3363 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,099 psi | 89% | 3350 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,924 psi | 87% | 3376 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 84% | 52,518 psi | 86% | 3202 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 51,982 psi | 85% | 3238 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,737 psi | 88% | 3330 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 90% | 51,938 psi | 85% | 3215 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,330 psi | 88% | 3241 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,287 psi | 87% | 3235 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,867 psi | 88% | 3241 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,636 psi | 90% | 3287 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,780 psi | 88% | 3307 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,288 psi | 89% | 3258 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,114 psi | 90% | 3284 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,881 psi | 87% | 3136 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,621 psi | 88% | 3136 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,301 psi | 88% | 3186 fps | 97.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,243 psi | 87% | 3323 fps | 96.3% |
| Somchem S335 | <<locked>> | 82% | 52,649 psi | 86% | 3133 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,911 psi | 89% | 3248 fps | 99.9% |
| Somchem S355 | <<locked>> | 88% | 52,315 psi | 86% | 3241 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 51,634 psi | 85% | 3317 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,549 psi | 90% | 3304 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 82% | 53,330 psi | 88% | 3123 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,402 psi | 86% | 3166 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,040 psi | 87% | 3179 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,447 psi | 88% | 3212 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 51,779 psi | 85% | 3248 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 86% | 54,839 psi | 90% | 3228 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,534 psi | 90% | 3314 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,676 psi | 83% | 3304 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 51,677 psi | 85% | 3215 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,127 psi | 87% | 3320 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,886 psi | 67% | 3241 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 51,677 psi | 85% | 3232 fps | 100% |
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% | 46,818 psi | 77% | 3071 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 48,312 psi | 79% | 3100 fps | 95.8% |
| Accurate 3100 | <<locked>> | 94% | 39,160 psi | 64% | 2992 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 44,295 psi | 73% | 3071 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 35,433 psi | 58% | 2930 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 49,806 psi | 82% | 3202 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 42,308 psi | 69% | 3028 fps | 98.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,151 psi | 76% | 3251 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,308 psi | 69% | 3051 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,382 psi | 75% | 3130 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 35,056 psi | 58% | 2943 fps | 95.7% |
| Alliant Reloder-17 | 68.3 gr | 80% | 37,014 psi | 61% | 3025 fps | 98.2% |
| Alliant Reloder-19 | <<locked>> | 98% | 51,256 psi | 84% | 3284 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,879 psi | 51% | 2838 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,926 psi | 59% | 3041 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,588 psi | 81% | 3209 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 42,453 psi | 70% | 3061 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 45,745 psi | 75% | 3091 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 43,004 psi | 71% | 3064 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 43,207 psi | 71% | 3117 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 88% | 49,763 psi | 82% | 3212 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 50,299 psi | 83% | 3215 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,342 psi | 50% | 2766 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,731 psi | 77% | 3182 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 46,021 psi | 76% | 3205 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,672 psi | 44% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,167 psi | 79% | 3156 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 50,473 psi | 83% | 3202 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,411 psi | 73% | 3068 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,760 psi | 77% | 3091 fps | 96.2% |
| IMR 4350 | <<locked>> | 90% | 46,238 psi | 76% | 3117 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,382 psi | 73% | 3064 fps | 95.4% |
| IMR 4831 | <<locked>> | 82% | 34,243 psi | 56% | 2881 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 46,528 psi | 76% | 3163 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 49,719 psi | 82% | 3176 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,081 psi | 81% | 3123 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 44,498 psi | 73% | 3071 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 39,117 psi | 64% | 2943 fps | 95.4% |
| Lovex S070 | <<locked>> | 86% | 42,293 psi | 69% | 3038 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 48,733 psi | 80% | 3146 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,139 psi | 81% | 3146 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,744 psi | 73% | 3114 fps | 99.2% |
| Norma 204 | <<locked>> | 92% | 49,588 psi | 81% | 3225 fps | 95% |
| Norma MRP | <<locked>> | 96% | 44,396 psi | 73% | 3219 fps | 95.5% |
| Norma URP | <<locked>> | 82% | 35,534 psi | 58% | 2930 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 44,875 psi | 74% | 3130 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 39,610 psi | 65% | 3041 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,209 psi | 45% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,221 psi | 71% | 3041 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,530 psi | 80% | 3255 fps | 99.3% |
| ReloadSwiss RS 60 | 68.3 gr | 80% | 39,349 psi | 65% | 3100 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 35,230 psi | 58% | 2943 fps | 95.2% |
| ReloadSwiss RS 70 | 72.8 gr | 84% | 37,289 psi | 61% | 3018 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 46,456 psi | 76% | 3091 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,914 psi | 66% | 2999 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 50,009 psi | 82% | 3261 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 86% | 45,745 psi | 75% | 3091 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 82% | 39,117 psi | 64% | 2943 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,719 psi | 82% | 3176 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,498 psi | 73% | 3071 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 42,293 psi | 69% | 3038 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,930 psi | 67% | 3051 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,575 psi | 83% | 3189 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,283 psi | 79% | 3163 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,734 psi | 82% | 3084 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,800 psi | 69% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,743 psi | 72% | 2999 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,530 psi | 81% | 3251 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 49,501 psi | 81% | 3081 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,459 psi | 83% | 3186 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 40,480 psi | 66% | 3002 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 29,863 psi | 49% | 2808 fps | 97% |
| Somchem S385 | <<locked>> | 94% | 44,512 psi | 73% | 3110 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 50,212 psi | 82% | 3071 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,296 psi | 76% | 3064 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,673 psi | 77% | 3071 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,566 psi | 63% | 2927 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 34,577 psi | 57% | 2871 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 45,078 psi | 74% | 3058 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,550 psi | 60% | 2933 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 88% | 33,736 psi | 55% | 2923 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,258 psi | 56% | 2841 fps | 97.5% |
| Winchester 760 | <<locked>> | 86% | 43,381 psi | 71% | 3120 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 90% | 29,225 psi | 48% | 2858 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,095 psi | 79% | 3166 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 105 powders for .300 Blaser Mag. loaded with the .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC. Alliant Reloder-26 delivers the highest muzzle velocity at 3,419 fps; across all powders the maximum-charge window runs from 2,090 fps to 3,419 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 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 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 MAGPRO, ADI AR 2213 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 .300 Blaser Mag. with the .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.