Load Specifications
Bullet Manufacturer:Cutting Edge
Bullet Weight:180 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Case Length (l3):2.724"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:124.89 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:27"
Max. allowed Pressure:69,618 psi
Recommended Twist Rate:1:10.5
Load data in caliber .338 Lapua Mag. Ackley Improved with .338 | 180gr | CutEdge ESP Raptor bullet and 111 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Ramshot Grand and Norma MRP.
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: 27"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 62,729 psi | 90% | 3182 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 62,105 psi | 89% | 3235 fps | 99.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 60,234 psi | 87% | 3281 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 59,364 psi | 85% | 3196 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 61,946 psi | 89% | 3333 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 60,147 psi | 86% | 3396 fps | 97.4% |
| ADI APS 450 | <<locked>> | 84% | 62,627 psi | 90% | 2582 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 61,931 psi | 89% | 3291 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 59,451 psi | 85% | 3241 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 58,972 psi | 85% | 3333 fps | 99.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 60,959 psi | 88% | 3396 fps | 98.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,928 psi | 56% | 3009 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 60,147 psi | 86% | 3386 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 62,816 psi | 90% | 3301 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 60,582 psi | 87% | 3264 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 60,843 psi | 87% | 3291 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 62,671 psi | 90% | 3392 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 60,437 psi | 87% | 3356 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 62,410 psi | 90% | 3379 fps | 99.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 60,292 psi | 87% | 3389 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,058 psi | 82% | 3294 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,197 psi | 71% | 3228 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 98% | 62,743 psi | 90% | 3461 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 62,685 psi | 90% | 3314 fps | 100% |
| Baschieri & Pellagri 109ᴾ | <<locked>> | 100% | 59,205 psi | 85% | 3278 fps | 95.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,998 psi | 79% | 3301 fps | 98.9% |
| Bofors RP3 | <<locked>> | 86% | 62,091 psi | 89% | 3284 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,020 psi | 65% | 3140 fps | 96.5% |
| Bofors RP5ᴾ | <<locked>> | 100% | 60,292 psi | 87% | 3389 fps | 99.6% |
| Bofors RP7 | <<locked>> | 90% | 60,945 psi | 88% | 3281 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,179 psi | 65% | 3094 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 86% | 62,381 psi | 90% | 3310 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 61,554 psi | 88% | 3356 fps | 100% |
| Hodgdon H4350 | <<locked>> | 92% | 61,250 psi | 88% | 3323 fps | 99.6% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 55,912 psi | 80% | 3248 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 59,582 psi | 86% | 3307 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 82% | 62,656 psi | 90% | 3301 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 62,975 psi | 90% | 3297 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 59,915 psi | 86% | 3284 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,182 psi | 69% | 3281 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 90% | 61,453 psi | 88% | 3383 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,477 psi | 52% | 2054 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 62,685 psi | 90% | 3284 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 62,192 psi | 89% | 3245 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 62,047 psi | 89% | 3268 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 60,495 psi | 87% | 3251 fps | 99.9% |
| IMR 4350 | <<locked>> | 94% | 62,555 psi | 90% | 3314 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 62,642 psi | 90% | 3307 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 59,117 psi | 85% | 3278 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 62,424 psi | 90% | 3323 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 61,830 psi | 89% | 3310 fps | 98.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 62,975 psi | 90% | 3442 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 82% | 62,903 psi | 90% | 3251 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 60,060 psi | 86% | 3202 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 62,801 psi | 90% | 3261 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 62,975 psi | 90% | 3297 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 60,756 psi | 87% | 3291 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,806 psi | 72% | 3117 fps | 99.6% |
| Norma 201 | <<locked>> | 82% | 60,075 psi | 86% | 3222 fps | 100% |
| Norma 202 | <<locked>> | 82% | 61,105 psi | 88% | 3212 fps | 100% |
| Norma 203B | <<locked>> | 84% | 60,075 psi | 86% | 3274 fps | 100% |
| Norma 204 | <<locked>> | 92% | 60,075 psi | 86% | 3320 fps | 99.3% |
| Norma MRP | <<locked>> | 98% | 60,191 psi | 86% | 3412 fps | 100% |
| Norma URP | <<locked>> | 92% | 60,031 psi | 86% | 3314 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 61,714 psi | 89% | 3304 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 58,885 psi | 85% | 3386 fps | 99% |
| Ramshot Hunter | <<locked>> | 92% | 59,074 psi | 85% | 3317 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 60,321 psi | 87% | 3353 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,159 psi | 53% | 2103 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 62,134 psi | 89% | 3294 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 62,671 psi | 90% | 3373 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 59,959 psi | 86% | 3346 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 62,149 psi | 89% | 3356 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 60,901 psi | 87% | 3396 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,733 psi | 70% | 3278 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 84% | 61,003 psi | 88% | 3222 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 62,105 psi | 89% | 3278 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 60,336 psi | 87% | 3297 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 98% | 61,656 psi | 89% | 3363 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 90% | 60,945 psi | 88% | 3281 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 62,975 psi | 90% | 3297 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 62,903 psi | 90% | 3251 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 62,801 psi | 90% | 3261 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 60,756 psi | 87% | 3291 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 60,191 psi | 86% | 3291 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 60,379 psi | 87% | 3258 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 60,756 psi | 87% | 3140 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 62,323 psi | 90% | 3136 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 62,801 psi | 90% | 3248 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 61,163 psi | 88% | 3360 fps | 99.6% |
| Somchem S335 | <<locked>> | 82% | 60,365 psi | 87% | 3130 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 61,525 psi | 88% | 3268 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 62,714 psi | 90% | 3284 fps | 98.5% |
| Somchem S365 | <<locked>> | 94% | 60,263 psi | 87% | 3310 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 62,308 psi | 90% | 3330 fps | 99.9% |
| Unknown powder | <<locked>> | 90% | 60,655 psi | 87% | 3320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 60,727 psi | 87% | 3110 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 61,612 psi | 89% | 3169 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 61,017 psi | 88% | 3179 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 59,741 psi | 86% | 3196 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 61,061 psi | 88% | 3281 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,680 psi | 80% | 3209 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 84% | 60,916 psi | 88% | 3209 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 61,627 psi | 89% | 3337 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 59,277 psi | 85% | 3320 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 60,568 psi | 87% | 3419 fps | 98.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,561 psi | 74% | 3235 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 62,671 psi | 90% | 3258 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 61,554 psi | 88% | 3356 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,882 psi | 77% | 3376 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 60,800 psi | 87% | 3297 fps | 99.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 27"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 54,955 psi | 79% | 3081 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,413 psi | 68% | 2995 fps | 98.1% |
| Accurate 3100 | <<locked>> | 82% | 31,836 psi | 46% | 2723 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 52,156 psi | 75% | 3091 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,408 psi | 58% | 2959 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 96% | 51,837 psi | 74% | 3251 fps | 95.7% |
| ADI APS 450 | <<locked>> | 80% | 58,668 psi | 84% | 2523 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 57,986 psi | 83% | 3235 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 49,255 psi | 71% | 3077 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,189 psi | 56% | 2943 fps | 95% |
| ADI AR 2213 | <<locked>> | 92% | 46,035 psi | 66% | 3127 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 96% | 34,084 psi | 49% | 2871 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 55,840 psi | 80% | 3320 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 58,827 psi | 85% | 3245 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,980 psi | 72% | 3100 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,403 psi | 77% | 3179 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,233 psi | 56% | 2979 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,121 psi | 65% | 3110 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,030 psi | 56% | 2936 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,552 psi | 57% | 2992 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,631 psi | 41% | 2697 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,647 psi | 44% | 2769 fps | 95.3% |
| Alliant Reloder-26 | 92.5 gr | 80% | 31,067 psi | 45% | 2828 fps | 96.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 58,407 psi | 84% | 3251 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 55,651 psi | 80% | 3219 fps | 95.1% |
| Bofors RP15 | <<locked>> | 90% | 39,146 psi | 56% | 2979 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 50,488 psi | 73% | 3110 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,018 psi | 60% | 3074 fps | 95.6% |
| Bofors RP5 | <<locked>> | 88% | 39,552 psi | 57% | 2992 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 44,034 psi | 63% | 2979 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 98% | 42,221 psi | 61% | 3028 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 50,894 psi | 73% | 3130 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 46,398 psi | 67% | 3100 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 41,524 psi | 60% | 2956 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 94% | 45,643 psi | 66% | 3058 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,341 psi | 69% | 3110 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 58,682 psi | 84% | 3241 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,695 psi | 53% | 2851 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 55,840 psi | 80% | 3225 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,233 psi | 56% | 3061 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 41,727 psi | 60% | 3028 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 39% | 1844 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,938 psi | 75% | 3123 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,766 psi | 79% | 3143 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,225 psi | 69% | 3051 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,282 psi | 68% | 3025 fps | 98.6% |
| IMR 4350 | <<locked>> | 80% | 39,682 psi | 57% | 2897 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,643 psi | 66% | 3012 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 35,085 psi | 50% | 2818 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 54,795 psi | 79% | 3209 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,773 psi | 64% | 3005 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 44,063 psi | 63% | 3094 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 80% | 58,798 psi | 84% | 3196 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 56,434 psi | 81% | 3150 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 52,040 psi | 75% | 3104 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,902 psi | 62% | 2953 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 41,249 psi | 59% | 2936 fps | 97.6% |
| Lovex S071 | <<locked>> | 88% | 33,257 psi | 48% | 2759 fps | 95.9% |
| Norma 201 | <<locked>> | 80% | 56,391 psi | 81% | 3169 fps | 100% |
| Norma 202 | <<locked>> | 80% | 57,334 psi | 82% | 3163 fps | 100% |
| Norma 203B | <<locked>> | 80% | 52,721 psi | 76% | 3163 fps | 100% |
| Norma 204 | <<locked>> | 80% | 39,421 psi | 57% | 2927 fps | 95% |
| Norma MRP | 94.2 gr | 84% | 36,013 psi | 52% | 2933 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 40,147 psi | 58% | 2956 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 80% | 53,679 psi | 77% | 3186 fps | 100% |
| Ramshot Grand | 101.8 gr | 88% | 43,018 psi | 62% | 3081 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 39,044 psi | 56% | 2940 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 88% | 37,246 psi | 54% | 2917 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,673 psi | 40% | 1886 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,879 psi | 73% | 3114 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 58,479 psi | 84% | 3314 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,935 psi | 69% | 3166 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,480 psi | 58% | 2979 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,117 psi | 56% | 2995 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,114 psi | 52% | 2966 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 53,650 psi | 77% | 3117 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,558 psi | 68% | 3054 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,381 psi | 62% | 2986 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 84% | 38,101 psi | 55% | 2917 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 44,034 psi | 63% | 2979 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,902 psi | 62% | 2953 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 58,798 psi | 84% | 3196 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 52,040 psi | 75% | 3104 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,249 psi | 59% | 2936 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,037 psi | 70% | 3114 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 56,565 psi | 81% | 3202 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 56,927 psi | 82% | 3087 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,356 psi | 69% | 2943 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,090 psi | 60% | 2894 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,437 psi | 58% | 2972 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 56,753 psi | 82% | 3084 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 47,587 psi | 68% | 3051 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,747 psi | 69% | 3035 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 36,680 psi | 53% | 2904 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,129 psi | 52% | 2835 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 43,207 psi | 62% | 3018 fps | 99.2% |
| Vihtavuori N133 | <<locked>> | 80% | 53,896 psi | 77% | 3018 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 54,186 psi | 78% | 3071 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,708 psi | 77% | 3077 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,756 psi | 59% | 2884 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,381 psi | 62% | 2986 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 88% | 37,101 psi | 53% | 2848 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 53,447 psi | 77% | 3104 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 43,947 psi | 63% | 3038 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 31,894 psi | 46% | 2782 fps | 97.7% |
| Vihtavuori N560 | <<locked>> | 92% | 45,847 psi | 66% | 3150 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 44,701 psi | 64% | 3100 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,756 psi | 59% | 2913 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,398 psi | 67% | 3100 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,280 psi | 36% | 2667 fps | 96.8% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,928 psi | 56% | 2897 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 116 powders for .338 Lapua Mag. Ackley Improved loaded with the .338 | 180gr | CutEdge ESP Raptor. Alliant Reloder-26 delivers the highest muzzle velocity at 3,461 fps; across all powders the maximum-charge window runs from 2,054 fps to 3,461 fps. Accurate 3100 gives the best case fill at 100 %, and 116 of the 116 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (480 MPa), the top charges use 49–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.338" calls for a 1:10.5 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. Alliant Reloder-26, Ramshot Grand, Norma MRP rank at the top here: for .338 Lapua Mag. Ackley Improved with the .338 | 180gr | CutEdge ESP Raptor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Norma 217, ReloadSwiss RS 80 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.