Load Specifications
Bullet Manufacturer:Peregrine
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:1:16.5
Load data in caliber .338 Lapua Mag. Ackley Improved with .338 | 180gr | Peregrine Bushmaster (VRG-3) Hybrid bullet and 115 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and ADI AR 2209.
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% | 61,017 psi | 88% | 3156 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 62,903 psi | 90% | 3255 fps | 99.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 58,001 psi | 83% | 3245 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 61,467 psi | 88% | 3219 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 59,872 psi | 86% | 3301 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 59,872 psi | 86% | 3415 fps | 98.8% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 61,177 psi | 88% | 3419 fps | 98% |
| ADI APS 450 | <<locked>> | 84% | 62,671 psi | 90% | 2569 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 60,220 psi | 87% | 3261 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 61,714 psi | 89% | 3268 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 61,177 psi | 88% | 3360 fps | 99.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 58,668 psi | 84% | 3353 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,492 psi | 54% | 2963 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 62,468 psi | 90% | 3251 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 62,540 psi | 90% | 3415 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 61,134 psi | 88% | 3350 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 62,903 psi | 90% | 3287 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 59,161 psi | 85% | 3264 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 60,626 psi | 87% | 3363 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 62,787 psi | 90% | 3386 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 60,234 psi | 87% | 3340 fps | 99.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,899 psi | 83% | 3343 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,665 psi | 79% | 3258 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,268 psi | 68% | 3186 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 59,828 psi | 86% | 3422 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 60,829 psi | 87% | 3284 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,997 psi | 76% | 3261 fps | 98.5% |
| Bofors RP3 | <<locked>> | 86% | 60,191 psi | 86% | 3255 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,899 psi | 83% | 3343 fps | 99.2% |
| Bofors RP7 | <<locked>> | 90% | 59,161 psi | 85% | 3245 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,847 psi | 67% | 3120 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 86% | 60,437 psi | 87% | 3278 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 62,221 psi | 89% | 3363 fps | 100% |
| Hodgdon H4350 | <<locked>> | 90% | 61,308 psi | 88% | 3317 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 98% | 58,871 psi | 85% | 3287 fps | 97.8% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 61,641 psi | 89% | 3333 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 82% | 60,930 psi | 88% | 3271 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 61,017 psi | 88% | 3268 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 62,192 psi | 89% | 3310 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,354 psi | 67% | 3235 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 90% | 59,190 psi | 85% | 3343 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,419 psi | 52% | 2044 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 62,163 psi | 89% | 3271 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 61,946 psi | 89% | 3238 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 61,148 psi | 88% | 3251 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 60,118 psi | 86% | 3238 fps | 99.8% |
| IMR 4350 | <<locked>> | 94% | 60,698 psi | 87% | 3281 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 60,887 psi | 87% | 3274 fps | 99.9% |
| IMR 4831 | <<locked>> | 94% | 60,104 psi | 86% | 3284 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 60,698 psi | 87% | 3291 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 60,031 psi | 86% | 3271 fps | 98.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,115 psi | 81% | 3323 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 82% | 62,468 psi | 90% | 3251 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 61,134 psi | 88% | 3225 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 62,294 psi | 89% | 3228 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 61,308 psi | 88% | 3235 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 61,192 psi | 88% | 3264 fps | 100% |
| Lovex S070 | <<locked>> | 94% | 62,961 psi | 90% | 3314 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,805 psi | 69% | 3077 fps | 99.3% |
| Norma 201 | <<locked>> | 84% | 62,468 psi | 90% | 3248 fps | 100% |
| Norma 202 | <<locked>> | 82% | 59,509 psi | 85% | 3186 fps | 100% |
| Norma 203B | <<locked>> | 86% | 62,337 psi | 90% | 3304 fps | 100% |
| Norma 204 | <<locked>> | 94% | 62,294 psi | 89% | 3346 fps | 99.4% |
| Norma MRPᴾ | <<locked>> | 100% | 62,149 psi | 89% | 3438 fps | 100% |
| Norma URP | <<locked>> | 94% | 62,207 psi | 89% | 3340 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 59,785 psi | 86% | 3274 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,739 psi | 82% | 3340 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 94% | 61,090 psi | 88% | 3343 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,865 psi | 73% | 3199 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,101 psi | 53% | 2090 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 60,365 psi | 87% | 3261 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 60,785 psi | 87% | 3343 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 62,163 psi | 89% | 3373 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 60,104 psi | 86% | 3323 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 62,932 psi | 90% | 3422 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,775 psi | 67% | 3232 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 82% | 62,569 psi | 90% | 3212 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 59,451 psi | 85% | 3196 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 60,220 psi | 87% | 3248 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 62,584 psi | 90% | 3320 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 59,538 psi | 86% | 3327 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 90% | 59,161 psi | 85% | 3245 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 61,192 psi | 88% | 3264 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 61,134 psi | 88% | 3225 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 61,308 psi | 88% | 3235 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 62,961 psi | 90% | 3314 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 62,381 psi | 90% | 3317 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 62,250 psi | 89% | 3271 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 62,888 psi | 90% | 3284 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 59,335 psi | 85% | 3114 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 60,742 psi | 87% | 3114 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 61,134 psi | 88% | 3219 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 59,045 psi | 85% | 3320 fps | 99.3% |
| Somchem S335 | <<locked>> | 84% | 62,758 psi | 90% | 3156 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 61,801 psi | 89% | 3248 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 59,915 psi | 86% | 3245 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 60,872 psi | 87% | 3251 fps | 98.1% |
| Somchem S365 | <<locked>> | 96% | 62,250 psi | 89% | 3333 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 60,133 psi | 86% | 3291 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 59,944 psi | 86% | 3091 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 59,901 psi | 86% | 3143 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 60,452 psi | 87% | 3163 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 61,525 psi | 88% | 3209 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 60,495 psi | 87% | 3274 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,767 psi | 80% | 3205 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 86% | 62,366 psi | 90% | 3209 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 59,422 psi | 85% | 3278 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 61,046 psi | 88% | 3343 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 62,105 psi | 89% | 3432 fps | 98.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,371 psi | 71% | 3192 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 60,742 psi | 87% | 3228 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 62,424 psi | 90% | 3366 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,995 psi | 73% | 3337 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 59,292 psi | 85% | 3238 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 60,974 psi | 88% | 3294 fps | 99.3% |
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% | 53,374 psi | 77% | 3054 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,445 psi | 74% | 3074 fps | 98.6% |
| Accurate 3100 | <<locked>> | 84% | 32,837 psi | 47% | 2746 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 50,618 psi | 73% | 3064 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,928 psi | 56% | 2923 fps | 98.9% |
| Accurate High Country | <<locked>> | 90% | 44,788 psi | 64% | 3140 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 94% | 48,950 psi | 70% | 3205 fps | 95.4% |
| ADI APS 450 | <<locked>> | 80% | 58,566 psi | 84% | 2507 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 56,449 psi | 81% | 3205 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 47,979 psi | 69% | 3048 fps | 100% |
| ADI AR 2209 | 89.3 gr | 86% | 40,611 psi | 58% | 2972 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 44,440 psi | 64% | 3081 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 98% | 35,085 psi | 50% | 2894 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 58,581 psi | 84% | 3196 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 54,041 psi | 78% | 3287 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,814 psi | 59% | 2972 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,631 psi | 70% | 3071 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,851 psi | 74% | 3150 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,840 psi | 54% | 2940 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,482 psi | 62% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,393 psi | 58% | 2966 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,901 psi | 59% | 3022 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,630 psi | 40% | 2661 fps | 97% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,691 psi | 46% | 2802 fps | 95.7% |
| Alliant Reloder-26 | 89.8 gr | 80% | 29,791 psi | 43% | 2782 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 56,869 psi | 82% | 3225 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 40,306 psi | 58% | 3005 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 48,950 psi | 70% | 3081 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,901 psi | 59% | 3022 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 42,873 psi | 62% | 2946 fps | 97.1% |
| Hodgdon H1000 | <<locked>> | 98% | 43,700 psi | 63% | 3051 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 49,298 psi | 71% | 3097 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 41,118 psi | 59% | 2982 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 80% | 43,976 psi | 63% | 3005 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 92% | 47,616 psi | 68% | 3091 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,702 psi | 67% | 3074 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 57,087 psi | 82% | 3215 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,418 psi | 51% | 2818 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 54,172 psi | 78% | 3196 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,797 psi | 54% | 3018 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 40,292 psi | 58% | 2992 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 39% | 1827 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 54,723 psi | 79% | 3159 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 58,015 psi | 83% | 3186 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,444 psi | 72% | 3084 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,678 psi | 76% | 3117 fps | 99.3% |
| IMR 4350 | <<locked>> | 80% | 38,580 psi | 55% | 2864 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,367 psi | 64% | 2979 fps | 97.9% |
| IMR 4831 | <<locked>> | 80% | 37,463 psi | 54% | 2874 fps | 98.7% |
| IMR 4895 | <<locked>> | 80% | 53,214 psi | 76% | 3179 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,383 psi | 67% | 3031 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 94% | 45,498 psi | 65% | 3120 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 58,581 psi | 84% | 3196 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 57,174 psi | 82% | 3169 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 55,129 psi | 79% | 3123 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,662 psi | 73% | 3077 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,727 psi | 60% | 2923 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 39,943 psi | 57% | 2900 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 31,966 psi | 46% | 2726 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 54,940 psi | 79% | 3140 fps | 100% |
| Norma 202 | <<locked>> | 80% | 55,927 psi | 80% | 3136 fps | 100% |
| Norma 203B | <<locked>> | 80% | 51,198 psi | 74% | 3133 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,944 psi | 59% | 2956 fps | 95.3% |
| Norma MRP | 93.7 gr | 86% | 37,289 psi | 54% | 2966 fps | 96.1% |
| Norma URP | <<locked>> | 80% | 38,769 psi | 56% | 2923 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 52,083 psi | 75% | 3156 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,455 psi | 65% | 3127 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 37,797 psi | 54% | 2907 fps | 97.2% |
| Ramshot Magnum | <<locked>> | 92% | 37,492 psi | 54% | 2917 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,615 psi | 40% | 1873 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,414 psi | 71% | 3081 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 56,768 psi | 82% | 3281 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,253 psi | 66% | 3136 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,986 psi | 56% | 2946 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,826 psi | 54% | 2959 fps | 98.3% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,376 psi | 54% | 2995 fps | 96.3% |
| Rottweil R 901 | <<locked>> | 80% | 59,030 psi | 85% | 3166 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 52,272 psi | 75% | 3087 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,021 psi | 66% | 3022 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 45,034 psi | 65% | 3012 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 86% | 39,407 psi | 57% | 2943 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 42,873 psi | 62% | 2946 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,727 psi | 60% | 2923 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 57,174 psi | 82% | 3169 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 50,662 psi | 73% | 3077 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,943 psi | 57% | 2900 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,616 psi | 68% | 3087 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 57,899 psi | 83% | 3209 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 55,172 psi | 79% | 3173 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 55,680 psi | 80% | 3064 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,210 psi | 68% | 2920 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,872 psi | 59% | 2861 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 39,059 psi | 56% | 2936 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 55,419 psi | 80% | 3058 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 57,769 psi | 83% | 3192 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,267 psi | 66% | 3022 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,516 psi | 71% | 3061 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 35,302 psi | 51% | 2874 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,449 psi | 54% | 2864 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 56,333 psi | 81% | 3041 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 52,808 psi | 76% | 3045 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,011 psi | 76% | 3061 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,237 psi | 64% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,219 psi | 58% | 2920 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 39,624 psi | 57% | 2900 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 51,271 psi | 74% | 3051 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,639 psi | 57% | 2920 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 30,647 psi | 44% | 2746 fps | 97.1% |
| Vihtavuori N560 | <<locked>> | 92% | 46,659 psi | 67% | 3156 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 98% | 46,035 psi | 66% | 3127 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,523 psi | 57% | 2884 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,278 psi | 59% | 2986 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,381 psi | 35% | 2625 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 55,390 psi | 80% | 3179 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,523 psi | 57% | 2907 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 115 powders for .338 Lapua Mag. Ackley Improved loaded with the .338 | 180gr | Peregrine Bushmaster (VRG-3) Hybrid. Norma MRP delivers the highest muzzle velocity at 3,438 fps; across all powders the maximum-charge window runs from 2,044 fps to 3,438 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (480 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.338" calls for a 1:16.5 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, Norma MRP, ADI AR 2209 rank at the top here: for .338 Lapua Mag. Ackley Improved with the .338 | 180gr | Peregrine Bushmaster (VRG-3) Hybrid 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.