Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 88gr | Inceptor SRR bullet and 87 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and ReloadSwiss RS 52.
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 2015 | <<locked>> | 86% | 55,651 psi | 87% | 3786 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,317 psi | 85% | 3789 fps | 99.9% |
| Accurate 2495 | <<locked>> | 90% | 54,230 psi | 85% | 3780 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,000 psi | 89% | 3868 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 54,288 psi | 85% | 3825 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,506 psi | 87% | 3888 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 82% | 57,711 psi | 90% | 3789 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 55,448 psi | 87% | 3871 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 94% | 56,768 psi | 89% | 3865 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,317 psi | 85% | 3819 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 86% | 54,621 psi | 86% | 3822 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,695 psi | 87% | 3960 fps | 98.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,724 psi | 87% | 3990 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,159 psi | 88% | 3891 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,579 psi | 89% | 3891 fps | 99.2% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,882 psi | 86% | 3809 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,246 psi | 90% | 3914 fps | 98.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,997 psi | 83% | 3891 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,650 psi | 86% | 3944 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,869 psi | 88% | 3868 fps | 97.6% |
| Bofors RP3 | <<locked>> | 94% | 57,522 psi | 90% | 3904 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,130 psi | 88% | 3816 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,925 psi | 85% | 3835 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,927 psi | 88% | 3957 fps | 98% |
| Hodgdon H322 | <<locked>> | 82% | 54,636 psi | 86% | 3842 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,231 psi | 88% | 3858 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,955 psi | 86% | 3842 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 88% | 55,985 psi | 88% | 3888 fps | 98.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,081 psi | 77% | 3730 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,869 psi | 88% | 3914 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,577 psi | 54% | 2562 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,624 psi | 90% | 3898 fps | 99.1% |
| IMR 3031 | <<locked>> | 88% | 55,477 psi | 87% | 3891 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,072 psi | 88% | 3848 fps | 98.2% |
| IMR 4198 | <<locked>> | 82% | 54,766 psi | 86% | 3776 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,373 psi | 82% | 3799 fps | 96.9% |
| IMR 4895 | <<locked>> | 90% | 54,839 psi | 86% | 3885 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 86% | 54,317 psi | 85% | 3819 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 82% | 54,273 psi | 85% | 3793 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 88% | 55,201 psi | 87% | 3842 fps | 99.9% |
| Lovex S060 | <<locked>> | 88% | 54,882 psi | 86% | 3789 fps | 98.4% |
| Lovex S062 | <<locked>> | 92% | 55,680 psi | 87% | 3842 fps | 99.3% |
| Lovex S065 | <<locked>> | 98% | 55,332 psi | 87% | 3809 fps | 96% |
| Norma 201 | <<locked>> | 90% | 57,450 psi | 90% | 3875 fps | 99.5% |
| Norma 202 | <<locked>> | 88% | 54,433 psi | 85% | 3819 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,420 psi | 88% | 3894 fps | 98.6% |
| Norma URPᴾ | <<locked>> | 100% | 54,563 psi | 86% | 3875 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 90% | 53,766 psi | 84% | 3845 fps | 98.1% |
| Ramshot TAC | <<locked>> | 86% | 55,274 psi | 87% | 3812 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,665 psi | 86% | 3842 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,579 psi | 87% | 3809 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,853 psi | 55% | 2615 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,435 psi | 90% | 3881 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,954 psi | 85% | 3921 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,331 psi | 85% | 3963 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,825 psi | 87% | 3904 fps | 97.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,912 psi | 88% | 3937 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 86% | 54,288 psi | 85% | 3806 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 90% | 54,273 psi | 85% | 3802 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 96% | 57,319 psi | 90% | 3891 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,332 psi | 87% | 3809 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,201 psi | 87% | 3842 fps | 99.9% |
| Shooters World Precision | <<locked>> | 92% | 55,680 psi | 87% | 3842 fps | 99.3% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,276 psi | 90% | 3835 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,796 psi | 87% | 3891 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,912 psi | 88% | 3842 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,493 psi | 90% | 3858 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,186 psi | 85% | 3822 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,463 psi | 87% | 3763 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,086 psi | 88% | 3750 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 55,985 psi | 88% | 3855 fps | 99.5% |
| Somchem S335 | <<locked>> | 88% | 54,926 psi | 86% | 3753 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,985 psi | 89% | 3848 fps | 98.6% |
| Somchem S355 | <<locked>> | 96% | 57,551 psi | 90% | 3891 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,834 psi | 77% | 3799 fps | 99% |
| Vihtavuori N130 | <<locked>> | 84% | 54,969 psi | 86% | 3740 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,622 psi | 87% | 3753 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 57,406 psi | 90% | 3845 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,216 psi | 87% | 3793 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,796 psi | 87% | 3806 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 57,348 psi | 90% | 3881 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 86% | 54,984 psi | 86% | 3822 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 92% | 57,624 psi | 90% | 3842 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,492 psi | 89% | 3875 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,781 psi | 86% | 3786 fps | 99.1% |
| Winchester 748 | <<locked>> | 86% | 55,027 psi | 86% | 3871 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 88% | 53,998 psi | 85% | 3825 fps | 98.7% |
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 2015 | <<locked>> | 80% | 45,556 psi | 71% | 3589 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,473 psi | 79% | 3714 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 38,043 psi | 60% | 3435 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 45,730 psi | 72% | 3638 fps | 98.9% |
| Accurate 4064 | <<locked>> | 80% | 35,940 psi | 56% | 3396 fps | 97.4% |
| Accurate 4350 | <<locked>> | 96% | 47,587 psi | 75% | 3717 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 54,143 psi | 85% | 3727 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 42,308 psi | 66% | 3570 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 88% | 46,789 psi | 73% | 3648 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,440 psi | 70% | 3599 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 80% | 44,135 psi | 69% | 3625 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,851 psi | 81% | 3881 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 48,066 psi | 75% | 3812 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,801 psi | 67% | 3586 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 40,364 psi | 63% | 3520 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,517 psi | 81% | 3743 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 43,598 psi | 68% | 3609 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 96% | 46,485 psi | 73% | 3730 fps | 95.3% |
| Alliant Reloder-17 | 86.3 gr | 88% | 40,857 psi | 64% | 3609 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 48,457 psi | 76% | 3711 fps | 95.9% |
| Bofors RP3 | <<locked>> | 84% | 40,205 psi | 63% | 3517 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,267 psi | 73% | 3609 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,453 psi | 68% | 3606 fps | 97.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,964 psi | 75% | 3783 fps | 96.2% |
| Hodgdon H322 | <<locked>> | 80% | 50,879 psi | 80% | 3770 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,315 psi | 82% | 3783 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 51,213 psi | 80% | 3763 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 42,656 psi | 67% | 3586 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 39,914 psi | 63% | 3507 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,754 psi | 61% | 3514 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,541 psi | 40% | 2306 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,973 psi | 64% | 3520 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 41,887 psi | 66% | 3609 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 45,876 psi | 72% | 3629 fps | 95.9% |
| IMR 4198 | <<locked>> | 80% | 51,605 psi | 81% | 3717 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 48,718 psi | 76% | 3724 fps | 96% |
| IMR 4895 | <<locked>> | 82% | 41,785 psi | 65% | 3579 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 44,440 psi | 70% | 3599 fps | 97.2% |
| Lovex D073.5 | <<locked>> | 80% | 50,488 psi | 79% | 3714 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 41,249 psi | 65% | 3537 fps | 98% |
| Lovex S060 | <<locked>> | 80% | 42,540 psi | 67% | 3510 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 37,333 psi | 59% | 3412 fps | 95% |
| Lovex S065 | <<locked>> | 96% | 51,895 psi | 81% | 3737 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 41,220 psi | 65% | 3517 fps | 96.4% |
| Norma 202 | <<locked>> | 80% | 41,611 psi | 65% | 3540 fps | 98.6% |
| Norma 203B | <<locked>> | 84% | 42,931 psi | 67% | 3596 fps | 95.4% |
| Norma URP | <<locked>> | 96% | 47,427 psi | 74% | 3720 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 84% | 43,105 psi | 68% | 3602 fps | 95.3% |
| Ramshot TAC | <<locked>> | 84% | 51,590 psi | 81% | 3734 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,092 psi | 69% | 3606 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,385 psi | 76% | 3661 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,715 psi | 40% | 2359 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,111 psi | 79% | 3737 fps | 99.3% |
| ReloadSwiss RS 52 | 81.1 gr | 84% | 46,398 psi | 73% | 3750 fps | 95.6% |
| ReloadSwiss RS 60 | 80.4 gr | 82% | 35,085 psi | 55% | 3448 fps | 95.3% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 47,848 psi | 75% | 3740 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 51,866 psi | 81% | 3848 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 44,657 psi | 70% | 3602 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 39,015 psi | 61% | 3445 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 86% | 40,234 psi | 63% | 3510 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 51,895 psi | 81% | 3737 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,249 psi | 65% | 3537 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 37,333 psi | 59% | 3412 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,243 psi | 83% | 3757 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 42,003 psi | 66% | 3579 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,257 psi | 82% | 3773 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 49,516 psi | 78% | 3694 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 44,077 psi | 69% | 3596 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,569 psi | 67% | 3494 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,201 psi | 55% | 3291 fps | 98% |
| Somchem S321 | <<locked>> | 80% | 48,530 psi | 76% | 3701 fps | 98.4% |
| Somchem S335 | <<locked>> | 80% | 42,337 psi | 66% | 3488 fps | 99.3% |
| Somchem S341 | <<locked>> | 80% | 42,670 psi | 67% | 3537 fps | 95.3% |
| Somchem S355 | <<locked>> | 86% | 41,176 psi | 65% | 3527 fps | 95.4% |
| Somchem S365 | <<locked>> | 92% | 36,564 psi | 57% | 3474 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 48,240 psi | 76% | 3612 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,859 psi | 67% | 3504 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 38,218 psi | 60% | 3448 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 39,392 psi | 62% | 3451 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 84% | 36,753 psi | 58% | 3373 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 96% | 49,705 psi | 78% | 3727 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 44,527 psi | 70% | 3596 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 80% | 38,058 psi | 60% | 3415 fps | 97.7% |
| Vihtavuori N550 | <<locked>> | 96% | 49,124 psi | 77% | 3724 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 40,988 psi | 64% | 3474 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 44,222 psi | 69% | 3642 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,567 psi | 64% | 3517 fps | 95.4% |
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 106 powders for .300 Norma Mag. loaded with the .308 | 88gr | Inceptor SRR. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,990 fps; across all powders the maximum-charge window runs from 2,562 fps to 3,990 fps. Accurate 4350 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 88.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, 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. ReloadSwiss RS 60, Alliant Reloder-17, ReloadSwiss RS 52 rank at the top here: for .300 Norma Mag. with the .308 | 88gr | Inceptor SRR they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Alliant Reloder-26 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.