Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 225gr | CutEdge LZR MAX GEN2 bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Accurate High Country and Ramshot Grand.
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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 54,114 psi | 89% | 2598 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 52,243 psi | 86% | 2579 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 51,967 psi | 85% | 2694 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 94% | 52,634 psi | 86% | 2694 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 82% | 54,302 psi | 89% | 2543 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,200 psi | 87% | 2635 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 96% | 54,462 psi | 89% | 2694 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,295 psi | 74% | 2546 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,132 psi | 66% | 2513 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 53,519 psi | 88% | 2635 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,534 psi | 88% | 2631 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,549 psi | 90% | 2648 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,852 psi | 87% | 2628 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,099 psi | 89% | 2690 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,114 psi | 90% | 2654 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,792 psi | 83% | 2664 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 51,314 psi | 84% | 2690 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,200 psi | 87% | 2608 fps | 96.7% |
| Bofors RP15 | <<locked>> | 98% | 53,026 psi | 87% | 2674 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,673 psi | 77% | 2612 fps | 98.8% |
| Bofors RP5 | <<locked>> | 96% | 54,099 psi | 89% | 2690 fps | 99.9% |
| Bofors RP7 | <<locked>> | 84% | 51,982 psi | 85% | 2533 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,125 psi | 82% | 2628 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 86% | 54,389 psi | 89% | 2635 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 53,650 psi | 88% | 2592 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 94% | 54,505 psi | 89% | 2638 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,476 psi | 88% | 2621 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,867 psi | 88% | 2559 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,835 psi | 82% | 2733 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 54,418 psi | 89% | 2671 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,840 psi | 60% | 1588 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,461 psi | 88% | 2572 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,621 psi | 88% | 2556 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 52,866 psi | 87% | 2572 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 52,388 psi | 86% | 2572 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 96% | 52,301 psi | 86% | 2674 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 53,896 psi | 88% | 2552 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,098 psi | 86% | 2552 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,517 psi | 85% | 2566 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,085 psi | 89% | 2625 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 35,447 psi | 58% | 2441 fps | 98% |
| Norma MRP | <<locked>> | 94% | 53,693 psi | 88% | 2707 fps | 100% |
| Norma URP | <<locked>> | 88% | 54,549 psi | 90% | 2612 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 52,562 psi | 86% | 2690 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 53,417 psi | 88% | 2625 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,389 psi | 89% | 2680 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,695 psi | 62% | 1631 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,969 psi | 89% | 2628 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 52,330 psi | 86% | 2605 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,302 psi | 89% | 2684 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,893 psi | 82% | 2726 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 44,701 psi | 73% | 2618 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 82% | 52,939 psi | 87% | 2530 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,766 psi | 90% | 2608 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 92% | 52,170 psi | 86% | 2615 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 51,982 psi | 85% | 2533 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,896 psi | 88% | 2552 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,098 psi | 86% | 2552 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,563 psi | 90% | 2589 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,476 psi | 88% | 2411 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,069 psi | 87% | 2510 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 51,735 psi | 85% | 2612 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 52,924 psi | 87% | 2526 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,576 psi | 86% | 2556 fps | 98.5% |
| Somchem S365 | <<locked>> | 90% | 54,766 psi | 90% | 2615 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,634 psi | 86% | 2592 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 54,070 psi | 89% | 2500 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,997 psi | 87% | 2559 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,141 psi | 86% | 2572 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 52,054 psi | 85% | 2566 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,824 psi | 88% | 2631 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,766 psi | 88% | 2707 fps | 99% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,156 psi | 87% | 2687 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 46,253 psi | 76% | 2628 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,388 psi | 86% | 2526 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,389 psi | 89% | 2635 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 51,837 psi | 85% | 2733 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,518 psi | 86% | 2589 fps | 99.6% |
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 3100 | <<locked>> | 80% | 31,212 psi | 51% | 2205 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 42,438 psi | 70% | 2431 fps | 100% |
| Accurate High Country | 59.7 gr | 82% | 36,448 psi | 60% | 2408 fps | 95.8% |
| Accurate MAGPRO | 63.8 gr | 86% | 39,624 psi | 65% | 2467 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 51,169 psi | 84% | 2497 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 35,723 psi | 59% | 2323 fps | 96.5% |
| ADI AR 2213 | <<locked>> | 84% | 36,274 psi | 60% | 2365 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 94% | 37,188 psi | 61% | 2385 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 90% | 28,979 psi | 48% | 2238 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 35,969 psi | 59% | 2326 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,220 psi | 68% | 2444 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,369 psi | 78% | 2549 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 35,650 psi | 59% | 2320 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 31,386 psi | 52% | 2264 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,211 psi | 50% | 2234 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 26,339 psi | 43% | 2152 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,590 psi | 54% | 2356 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 47,094 psi | 77% | 2507 fps | 95.2% |
| Bofors RP15 | <<locked>> | 84% | 33,504 psi | 55% | 2313 fps | 95.8% |
| Bofors RP30 | <<locked>> | 90% | 33,199 psi | 55% | 2343 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 31,386 psi | 52% | 2264 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 45,876 psi | 75% | 2438 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 90% | 35,534 psi | 58% | 2349 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 44,512 psi | 73% | 2480 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 47,181 psi | 77% | 2493 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 38,783 psi | 64% | 2372 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 84% | 38,029 psi | 62% | 2356 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,653 psi | 63% | 2336 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 31,270 psi | 51% | 2326 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 43,642 psi | 72% | 2507 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 45% | 1417 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,408 psi | 68% | 2379 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,442 psi | 78% | 2464 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 40,727 psi | 67% | 2385 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 38,247 psi | 63% | 2323 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 86% | 37,304 psi | 61% | 2402 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 44,730 psi | 73% | 2415 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 42,975 psi | 71% | 2408 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 26,832 psi | 44% | 2093 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 41,075 psi | 67% | 2411 fps | 97.9% |
| Norma 217 | <<locked>> | 94% | 29,138 psi | 48% | 2280 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 32,648 psi | 54% | 2326 fps | 97.2% |
| Norma URP | <<locked>> | 80% | 42,018 psi | 69% | 2425 fps | 100% |
| Ramshot Grand | 60.7 gr | 84% | 34,287 psi | 56% | 2346 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 40,770 psi | 67% | 2421 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 30,269 psi | 50% | 2238 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,181 psi | 46% | 1453 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,343 psi | 83% | 2582 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,438 psi | 70% | 2454 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,930 psi | 67% | 2474 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 30,240 psi | 50% | 2306 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 38,566 psi | 63% | 2497 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 49,559 psi | 81% | 2484 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 37,115 psi | 61% | 2306 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 34,882 psi | 57% | 2306 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 80% | 45,876 psi | 75% | 2438 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,730 psi | 73% | 2415 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 42,975 psi | 71% | 2408 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,937 psi | 84% | 2536 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,328 psi | 83% | 2375 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,613 psi | 72% | 2365 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 34,563 psi | 57% | 2303 fps | 96.4% |
| Somchem S355 | <<locked>> | 80% | 49,617 psi | 81% | 2480 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 37,681 psi | 62% | 2300 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 38,783 psi | 64% | 2382 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,317 psi | 58% | 2290 fps | 97.4% |
| Vihtavuori N150 | <<locked>> | 80% | 47,442 psi | 78% | 2411 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,468 psi | 71% | 2418 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 30,472 psi | 50% | 2175 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 42,714 psi | 70% | 2421 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 33,779 psi | 55% | 2300 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 38,159 psi | 63% | 2431 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 90% | 37,608 psi | 62% | 2415 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 96% | 40,248 psi | 66% | 2513 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,525 psi | 70% | 2385 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,512 psi | 73% | 2480 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,556 psi | 44% | 2247 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 32,184 psi | 53% | 2224 fps | 95.3% |
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 78 powders for .300 Blaser Mag. loaded with the .308 | 225gr | CutEdge LZR MAX GEN2. Hodgdon Retumbo delivers the highest muzzle velocity at 2,733 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,733 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.308" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Accurate MAGPRO, Accurate High Country, Ramshot Grand rank at the top here: for .300 Blaser Mag. with the .308 | 225gr | CutEdge LZR MAX GEN2 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.