Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:186 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:1:13.5
Load data in caliber .338 Lapua Mag. Ackley Improved with .338 | 186gr | Peregrine VLR5 (VLR-5) bullet and 109 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 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.
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% | 62,946 psi | 90% | 3136 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 60,423 psi | 87% | 3182 fps | 99.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 60,234 psi | 87% | 3235 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 59,596 psi | 86% | 3150 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 61,931 psi | 89% | 3284 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 62,221 psi | 89% | 3412 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 98% | 59,132 psi | 85% | 3343 fps | 98% |
| ADI APS 450 | <<locked>> | 84% | 62,656 psi | 90% | 2536 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 61,931 psi | 89% | 3241 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 59,524 psi | 86% | 3196 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 59,132 psi | 85% | 3287 fps | 99.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 60,974 psi | 88% | 3353 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,914 psi | 56% | 2972 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 60,191 psi | 86% | 3337 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 59,132 psi | 85% | 3281 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 60,713 psi | 87% | 3215 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 60,901 psi | 87% | 3245 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 62,685 psi | 90% | 3343 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 60,466 psi | 87% | 3310 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 62,308 psi | 90% | 3330 fps | 99.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 60,278 psi | 87% | 3340 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,927 psi | 82% | 3245 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,139 psi | 71% | 3182 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 98% | 62,511 psi | 90% | 3412 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 62,584 psi | 90% | 3264 fps | 100% |
| Baschieri & Pellagri 109ᴾ | <<locked>> | 100% | 59,190 psi | 85% | 3235 fps | 96.1% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,071 psi | 79% | 3258 fps | 99.1% |
| Bofors RP3 | <<locked>> | 86% | 62,105 psi | 89% | 3235 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,005 psi | 65% | 3100 fps | 96.7% |
| Bofors RP5ᴾ | <<locked>> | 100% | 60,278 psi | 87% | 3340 fps | 99.6% |
| Bofors RP7 | <<locked>> | 90% | 60,843 psi | 87% | 3228 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,559 psi | 70% | 3123 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 86% | 62,250 psi | 89% | 3261 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 60,089 psi | 86% | 3287 fps | 100% |
| Hodgdon H4350 | <<locked>> | 88% | 59,161 psi | 85% | 3241 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 98% | 60,916 psi | 88% | 3284 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 59,538 psi | 86% | 3261 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 82% | 62,714 psi | 90% | 3251 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 59,059 psi | 85% | 3199 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 59,915 psi | 86% | 3235 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,182 psi | 69% | 3238 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 90% | 61,395 psi | 88% | 3333 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,593 psi | 53% | 2018 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 59,930 psi | 86% | 3196 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 62,700 psi | 90% | 3228 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 61,540 psi | 88% | 3219 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 62,656 psi | 90% | 3268 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 62,743 psi | 90% | 3258 fps | 100% |
| IMR 4831 | <<locked>> | 94% | 62,221 psi | 89% | 3271 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 62,540 psi | 90% | 3274 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 61,685 psi | 89% | 3261 fps | 98.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 58,204 psi | 84% | 3320 fps | 98.7% |
| Lovex S060 | <<locked>> | 82% | 60,002 psi | 86% | 3153 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 62,888 psi | 90% | 3215 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 62,903 psi | 90% | 3248 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 60,742 psi | 87% | 3245 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,748 psi | 71% | 3074 fps | 99.7% |
| Norma 201 | <<locked>> | 82% | 60,234 psi | 87% | 3173 fps | 100% |
| Norma 202 | <<locked>> | 82% | 61,279 psi | 88% | 3166 fps | 100% |
| Norma 203B | <<locked>> | 84% | 60,191 psi | 86% | 3228 fps | 100% |
| Norma 204 | <<locked>> | 92% | 60,017 psi | 86% | 3274 fps | 99.4% |
| Norma MRP | <<locked>> | 98% | 60,263 psi | 87% | 3369 fps | 100% |
| Norma URP | <<locked>> | 92% | 60,060 psi | 86% | 3264 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 61,627 psi | 89% | 3255 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 59,219 psi | 85% | 3343 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 92% | 59,059 psi | 85% | 3271 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,982 psi | 76% | 3196 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,159 psi | 53% | 2064 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 62,062 psi | 89% | 3245 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 62,845 psi | 90% | 3327 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 59,959 psi | 86% | 3297 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 62,163 psi | 89% | 3310 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 60,771 psi | 87% | 3346 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,631 psi | 70% | 3235 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 60,945 psi | 88% | 3173 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 62,134 psi | 89% | 3228 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 60,452 psi | 87% | 3251 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 61,670 psi | 89% | 3317 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 90% | 60,843 psi | 87% | 3228 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 62,903 psi | 90% | 3248 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 62,888 psi | 90% | 3215 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 60,742 psi | 87% | 3245 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 60,089 psi | 86% | 3241 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 60,495 psi | 87% | 3209 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 60,785 psi | 87% | 3091 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 62,395 psi | 90% | 3087 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 62,859 psi | 90% | 3202 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 61,163 psi | 88% | 3310 fps | 99.6% |
| Somchem S335 | <<locked>> | 82% | 60,495 psi | 87% | 3084 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 61,714 psi | 89% | 3225 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 62,758 psi | 90% | 3241 fps | 98.6% |
| Somchem S365 | <<locked>> | 94% | 60,379 psi | 87% | 3264 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 62,221 psi | 89% | 3281 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 82% | 61,395 psi | 88% | 3064 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 61,743 psi | 89% | 3120 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 62,004 psi | 89% | 3140 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 59,495 psi | 85% | 3136 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 62,410 psi | 90% | 3255 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,783 psi | 83% | 3196 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 84% | 60,147 psi | 86% | 3136 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 61,409 psi | 88% | 3261 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 59,277 psi | 85% | 3274 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 60,176 psi | 86% | 3360 fps | 98.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,590 psi | 74% | 3192 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 62,787 psi | 90% | 3212 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 60,278 psi | 87% | 3294 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,809 psi | 77% | 3330 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 61,061 psi | 88% | 3219 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 58,798 psi | 84% | 3222 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% | 54,998 psi | 79% | 3031 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 52,779 psi | 76% | 3061 fps | 99.1% |
| Accurate 3100 | <<locked>> | 82% | 31,894 psi | 46% | 2687 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 52,214 psi | 75% | 3045 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,553 psi | 58% | 2920 fps | 99.4% |
| Accurate High Country | <<locked>> | 88% | 43,294 psi | 62% | 3068 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 92% | 47,427 psi | 68% | 3136 fps | 95.5% |
| ADI APS 450 | <<locked>> | 80% | 58,595 psi | 84% | 2474 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 58,117 psi | 83% | 3189 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 49,269 psi | 71% | 3031 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,218 psi | 56% | 2904 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 90% | 42,931 psi | 62% | 3015 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 96% | 34,084 psi | 49% | 2835 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 55,970 psi | 80% | 3274 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 39,508 psi | 57% | 2907 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,053 psi | 72% | 3054 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,490 psi | 77% | 3133 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,276 psi | 56% | 2936 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,194 psi | 65% | 3071 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,102 psi | 56% | 2900 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,610 psi | 57% | 2953 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,674 psi | 41% | 2661 fps | 97.9% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,748 psi | 44% | 2740 fps | 95.7% |
| Alliant Reloder-26 | 90.5 gr | 80% | 31,082 psi | 45% | 2792 fps | 96.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 58,566 psi | 84% | 3209 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 55,550 psi | 80% | 3173 fps | 95.3% |
| Bofors RP15 | <<locked>> | 90% | 39,218 psi | 56% | 2940 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 50,647 psi | 73% | 3068 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 41,916 psi | 60% | 3035 fps | 95.8% |
| Bofors RP5 | <<locked>> | 88% | 39,610 psi | 57% | 2953 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 44,092 psi | 63% | 2936 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 42,250 psi | 61% | 2989 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 50,894 psi | 73% | 3084 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,641 psi | 61% | 2976 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 45,411 psi | 65% | 2995 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 90% | 45,948 psi | 66% | 3025 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,049 psi | 65% | 3005 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 58,798 psi | 84% | 3196 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,738 psi | 53% | 2812 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 55,927 psi | 80% | 3179 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,651 psi | 53% | 2953 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 41,800 psi | 60% | 2992 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 39% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 56,159 psi | 81% | 3140 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,837 psi | 74% | 3064 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,157 psi | 78% | 3104 fps | 99.6% |
| IMR 4350 | <<locked>> | 80% | 39,740 psi | 57% | 2858 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,730 psi | 66% | 2972 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 38,783 psi | 56% | 2864 fps | 99.2% |
| IMR 4895 | <<locked>> | 80% | 54,911 psi | 79% | 3163 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,802 psi | 64% | 2963 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 92% | 43,947 psi | 63% | 3051 fps | 95.6% |
| Lovex S060 | <<locked>> | 80% | 56,463 psi | 81% | 3100 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 52,098 psi | 75% | 3058 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,960 psi | 62% | 2910 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 41,321 psi | 59% | 2894 fps | 97.8% |
| Lovex S071 | <<locked>> | 86% | 31,111 psi | 45% | 2667 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 56,434 psi | 81% | 3120 fps | 100% |
| Norma 202 | <<locked>> | 80% | 57,406 psi | 82% | 3114 fps | 100% |
| Norma 203B | <<locked>> | 80% | 52,852 psi | 76% | 3117 fps | 100% |
| Norma 204 | <<locked>> | 80% | 39,465 psi | 57% | 2887 fps | 95.3% |
| Norma MRP | 92.2 gr | 84% | 36,056 psi | 52% | 2897 fps | 96% |
| Norma URP | <<locked>> | 80% | 40,234 psi | 58% | 2917 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 80% | 53,795 psi | 77% | 3143 fps | 100% |
| Ramshot Grand | 100.2 gr | 92% | 43,874 psi | 63% | 3061 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 39,088 psi | 56% | 2900 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 36,129 psi | 52% | 2851 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 40% | 1850 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,894 psi | 73% | 3068 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 58,537 psi | 84% | 3264 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,037 psi | 69% | 3123 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,524 psi | 58% | 2940 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,204 psi | 56% | 2956 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,187 psi | 52% | 2933 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 80% | 53,693 psi | 77% | 3068 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,616 psi | 68% | 3012 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,511 psi | 63% | 2946 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 84% | 38,130 psi | 55% | 2877 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 44,092 psi | 63% | 2936 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,960 psi | 62% | 2910 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 52,098 psi | 75% | 3058 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,321 psi | 59% | 2894 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,081 psi | 71% | 3071 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 56,594 psi | 81% | 3153 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 57,072 psi | 82% | 3041 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,486 psi | 70% | 2897 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,192 psi | 61% | 2854 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,826 psi | 54% | 2871 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 56,797 psi | 82% | 3035 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 47,630 psi | 68% | 3009 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,688 psi | 69% | 2992 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 36,738 psi | 53% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,158 psi | 52% | 2795 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 57,740 psi | 83% | 3018 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 54,346 psi | 78% | 3022 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 54,621 psi | 78% | 3041 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,716 psi | 66% | 2927 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,669 psi | 60% | 2913 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 38,392 psi | 55% | 2838 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 52,837 psi | 76% | 3035 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,075 psi | 59% | 2913 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 31,937 psi | 46% | 2746 fps | 97.9% |
| Vihtavuori N560 | <<locked>> | 90% | 45,179 psi | 65% | 3087 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 96% | 44,628 psi | 64% | 3061 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,901 psi | 59% | 2874 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,772 psi | 61% | 2979 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,309 psi | 36% | 2638 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 56,927 psi | 82% | 3159 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,087 psi | 55% | 2838 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 109 powders for .338 Lapua Mag. Ackley Improved loaded with the .338 | 186gr | Peregrine VLR5 (VLR-5). Accurate High Country delivers the highest muzzle velocity at 3,412 fps; across all powders the maximum-charge window runs from 2,018 fps to 3,412 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (480 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 186.0 gr projectile in 0.338" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, ADI AR 2225 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. Norma MRP, Alliant Reloder-26, Ramshot Grand rank at the top here: for .338 Lapua Mag. Ackley Improved with the .338 | 186gr | Peregrine VLR5 (VLR-5) 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.