Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 176gr | CutEdge ER Raptor bullet and 88 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 52,649 psi | 86% | 2966 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,663 psi | 85% | 2969 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,066 psi | 79% | 2982 fps | 97.9% |
| Accurate 4064 | <<locked>> | 86% | 53,055 psi | 87% | 3022 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,838 psi | 88% | 3114 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 53,055 psi | 87% | 3054 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 88% | 54,317 psi | 89% | 3058 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 51,982 psi | 85% | 3091 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,287 psi | 87% | 3179 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 51,895 psi | 85% | 3084 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,737 psi | 90% | 3081 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,940 psi | 90% | 3100 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,071 psi | 90% | 3182 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 52,562 psi | 86% | 3150 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,752 psi | 90% | 3136 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,324 psi | 74% | 3012 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,653 psi | 65% | 2900 fps | 96.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,040 psi | 85% | 3209 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,968 psi | 87% | 3064 fps | 99.7% |
| Bofors RP3 | <<locked>> | 86% | 51,721 psi | 85% | 3038 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 51,706 psi | 85% | 3009 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 86% | 52,518 psi | 86% | 3051 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 92% | 52,982 psi | 87% | 3110 fps | 98% |
| Hodgdon H4350 | <<locked>> | 90% | 53,055 psi | 87% | 3071 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 82% | 53,606 psi | 88% | 3064 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 51,619 psi | 85% | 3045 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,708 psi | 88% | 3100 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,301 psi | 88% | 3143 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,795 psi | 59% | 1952 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,694 psi | 90% | 3064 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,853 psi | 88% | 3048 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,664 psi | 88% | 3038 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,272 psi | 87% | 3018 fps | 97.9% |
| IMR 4350 | <<locked>> | 94% | 52,678 psi | 86% | 3041 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,505 psi | 88% | 3045 fps | 97.9% |
| IMR 4831 | <<locked>> | 96% | 54,578 psi | 90% | 3107 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 52,881 psi | 87% | 3077 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,026 psi | 87% | 3025 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,199 psi | 86% | 2979 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 53,606 psi | 88% | 3035 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,200 psi | 87% | 3038 fps | 98.9% |
| Lovex S070 | <<locked>> | 94% | 54,447 psi | 89% | 3077 fps | 98.3% |
| Norma 201 | <<locked>> | 84% | 54,969 psi | 90% | 3048 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,257 psi | 86% | 2995 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,201 psi | 89% | 3087 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,301 psi | 88% | 3091 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 51,213 psi | 84% | 3153 fps | 97.6% |
| Norma URP | <<locked>> | 94% | 52,982 psi | 87% | 3104 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 84% | 51,561 psi | 85% | 3054 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 94% | 51,924 psi | 85% | 3097 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,318 psi | 60% | 1995 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,576 psi | 86% | 3028 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 52,040 psi | 85% | 3110 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 52,214 psi | 86% | 3150 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,012 psi | 89% | 3136 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,953 psi | 87% | 3163 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 84% | 52,199 psi | 86% | 2995 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 51,750 psi | 85% | 3031 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,766 psi | 88% | 3120 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 90% | 51,706 psi | 85% | 3009 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,200 psi | 87% | 3038 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,026 psi | 87% | 3025 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,606 psi | 88% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,447 psi | 89% | 3077 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,592 psi | 88% | 3094 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,215 psi | 89% | 3051 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,998 psi | 90% | 3074 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,707 psi | 87% | 2933 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,650 psi | 88% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,243 psi | 87% | 2989 fps | 97.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,287 psi | 87% | 3114 fps | 96.6% |
| Somchem S335 | <<locked>> | 82% | 52,359 psi | 86% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,896 psi | 88% | 3041 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 51,982 psi | 85% | 3028 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 51,692 psi | 85% | 3104 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,505 psi | 89% | 3097 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 82% | 53,185 psi | 87% | 2920 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,359 psi | 86% | 2963 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,055 psi | 87% | 2976 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,374 psi | 88% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 51,692 psi | 85% | 3041 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 86% | 54,766 psi | 90% | 3022 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,360 psi | 89% | 3100 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,575 psi | 83% | 3094 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 51,561 psi | 85% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,171 psi | 87% | 3110 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,741 psi | 67% | 3038 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 51,532 psi | 85% | 3025 fps | 100% |
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% | 46,021 psi | 76% | 2864 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,005 psi | 74% | 2844 fps | 95.2% |
| Accurate 3100 | <<locked>> | 94% | 38,682 psi | 64% | 2795 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 43,555 psi | 72% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 35,070 psi | 58% | 2736 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 49,617 psi | 81% | 2995 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 42,047 psi | 69% | 2831 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 96% | 48,660 psi | 80% | 3025 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,948 psi | 75% | 3041 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 48,631 psi | 80% | 3025 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,105 psi | 69% | 2854 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,165 psi | 74% | 2927 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 82% | 34,824 psi | 57% | 2753 fps | 96% |
| Alliant Reloder-17 | 77.4 gr | 80% | 36,709 psi | 60% | 2828 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,979 psi | 79% | 3015 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,414 psi | 50% | 2648 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,057 psi | 61% | 2831 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,694 psi | 59% | 2848 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,356 psi | 81% | 2999 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 42,018 psi | 69% | 2858 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 45,498 psi | 75% | 2894 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 42,714 psi | 70% | 2864 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 43,076 psi | 71% | 2920 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 86% | 46,557 psi | 76% | 2949 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 50,140 psi | 82% | 3005 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,950 psi | 49% | 2579 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,659 psi | 77% | 2979 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 45,890 psi | 75% | 3002 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 44% | 1749 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,153 psi | 79% | 2953 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 50,343 psi | 83% | 2995 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,193 psi | 73% | 2867 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,644 psi | 77% | 2894 fps | 96.5% |
| IMR 4350 | <<locked>> | 90% | 46,253 psi | 76% | 2923 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,367 psi | 73% | 2871 fps | 95.8% |
| IMR 4831 | <<locked>> | 82% | 33,953 psi | 56% | 2690 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 46,311 psi | 76% | 2956 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 49,472 psi | 81% | 2969 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,052 psi | 81% | 2923 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 44,208 psi | 73% | 2871 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 38,725 psi | 64% | 2749 fps | 95.6% |
| Lovex S070 | <<locked>> | 86% | 42,061 psi | 69% | 2841 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 48,356 psi | 79% | 2940 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,023 psi | 80% | 2943 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,498 psi | 73% | 2913 fps | 99.3% |
| Norma 204 | <<locked>> | 92% | 49,516 psi | 81% | 3022 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 44,251 psi | 73% | 3015 fps | 95.8% |
| Norma URP | <<locked>> | 82% | 35,201 psi | 58% | 2736 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 44,657 psi | 73% | 2927 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 39,334 psi | 65% | 2841 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,050 psi | 44% | 1788 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,062 psi | 71% | 2848 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,472 psi | 80% | 3045 fps | 99.4% |
| ReloadSwiss RS 60 | 77.4 gr | 80% | 39,117 psi | 64% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,954 psi | 57% | 2753 fps | 95.4% |
| ReloadSwiss RS 70 | 82.6 gr | 84% | 37,130 psi | 61% | 2825 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 46,050 psi | 76% | 2887 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,436 psi | 65% | 2799 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 96% | 46,760 psi | 77% | 2995 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 45,498 psi | 75% | 2894 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,725 psi | 64% | 2749 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,472 psi | 81% | 2969 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,208 psi | 73% | 2871 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 42,061 psi | 69% | 2841 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,756 psi | 67% | 2854 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,459 psi | 83% | 2989 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,196 psi | 79% | 2959 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,530 psi | 81% | 2884 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,539 psi | 68% | 2736 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,468 psi | 71% | 2808 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,559 psi | 81% | 3048 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,197 psi | 81% | 2881 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,227 psi | 82% | 2979 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 40,103 psi | 66% | 2802 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 29,370 psi | 48% | 2618 fps | 97% |
| Somchem S385 | <<locked>> | 94% | 44,425 psi | 73% | 2913 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 50,038 psi | 82% | 2874 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,963 psi | 75% | 2861 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,470 psi | 76% | 2871 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,247 psi | 63% | 2733 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 34,243 psi | 56% | 2680 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 44,875 psi | 74% | 2861 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,201 psi | 59% | 2740 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 88% | 33,373 psi | 55% | 2730 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,866 psi | 56% | 2654 fps | 97.7% |
| Winchester 760 | <<locked>> | 86% | 43,221 psi | 71% | 2920 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,732 psi | 47% | 2667 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,022 psi | 79% | 2963 fps | 99.9% |
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 88 powders for .338 Lapua Mag. loaded with the .338 | 176gr | CutEdge ER Raptor. Alliant Reloder-26 delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,952 fps to 3,209 fps. Accurate 3100 gives the best case fill at 100 %, and 88 of the 88 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 176.0 gr projectile in 0.338" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .338 Lapua Mag. with the .338 | 176gr | CutEdge ER Raptor 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.