Load Specifications
Bullet:.338 | 185gr | Barnes MRX BT
Bullet Manufacturer:Barnes
Bullet Weight:185 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.33 Nosler load data
Case Length (l3):2.46"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:96 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:13.0
Load data in caliber .33 Nosler with .338 | 185gr | Barnes MRX BT bullet and 106 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and Alliant Reloder-17.
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 2015 | <<locked>> | 86% | 56,608 psi | 87% | 2894 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 58,784 psi | 90% | 2972 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 58,407 psi | 90% | 2959 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,145 psi | 88% | 2986 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 58,552 psi | 90% | 2969 fps | 97% |
| Accurate 4064 | <<locked>> | 94% | 58,262 psi | 90% | 3009 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,853 psi | 84% | 3038 fps | 99.3% |
| Accurate LT-30 | <<locked>> | 82% | 58,711 psi | 90% | 2881 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 55,941 psi | 86% | 2999 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 57,000 psi | 88% | 2995 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 58,624 psi | 90% | 3002 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,564 psi | 85% | 2923 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,782 psi | 87% | 3061 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,738 psi | 86% | 3120 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,710 psi | 87% | 3015 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,202 psi | 86% | 2900 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,522 psi | 88% | 3041 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,968 psi | 81% | 3048 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 58,073 psi | 89% | 3146 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,405 psi | 58% | 2749 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,713 psi | 64% | 2907 fps | 96.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 58,218 psi | 90% | 2877 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,927 psi | 86% | 3012 fps | 99.5% |
| Bofors RP3 | <<locked>> | 94% | 57,363 psi | 88% | 3031 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,580 psi | 89% | 2999 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,768 psi | 87% | 2933 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 57,943 psi | 89% | 3028 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,231 psi | 87% | 3077 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 55,477 psi | 85% | 2943 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,782 psi | 87% | 2969 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 58,624 psi | 90% | 3045 fps | 99.4% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 58,160 psi | 89% | 3097 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 96% | 55,274 psi | 85% | 2999 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 56,507 psi | 87% | 3009 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,066 psi | 75% | 2917 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,825 psi | 86% | 3038 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,376 psi | 85% | 3071 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,056 psi | 54% | 1824 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,885 psi | 89% | 3012 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,159 psi | 86% | 2989 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,449 psi | 87% | 2979 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,594 psi | 87% | 2956 fps | 97.5% |
| IMR 4198 | <<locked>> | 82% | 56,318 psi | 87% | 2858 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,418 psi | 84% | 2969 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,202 psi | 86% | 2979 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,866 psi | 80% | 2976 fps | 99.1% |
| IMR 4895 | <<locked>> | 90% | 55,216 psi | 85% | 3018 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 58,624 psi | 90% | 3002 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 58,813 psi | 90% | 2982 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,347 psi | 85% | 2969 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,564 psi | 85% | 2923 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 55,927 psi | 86% | 2972 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 58,769 psi | 90% | 3022 fps | 98.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,246 psi | 87% | 3005 fps | 97.7% |
| Norma 201 | <<locked>> | 90% | 57,943 psi | 89% | 2992 fps | 100% |
| Norma 202 | <<locked>> | 90% | 58,740 psi | 90% | 2995 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,652 psi | 87% | 3025 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 54,114 psi | 83% | 3028 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 92% | 57,392 psi | 88% | 3054 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,881 psi | 81% | 3018 fps | 97.8% |
| Ramshot TAC | <<locked>> | 86% | 55,245 psi | 85% | 2963 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 88% | 58,552 psi | 90% | 3038 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,782 psi | 86% | 2946 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,621 psi | 55% | 1870 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,943 psi | 89% | 2979 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,463 psi | 85% | 2972 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 58,160 psi | 89% | 3114 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,667 psi | 89% | 3143 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,621 psi | 84% | 3061 fps | 99.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,766 psi | 84% | 3094 fps | 99% |
| Rottweil R 901 | <<locked>> | 88% | 58,479 psi | 90% | 2969 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 58,349 psi | 90% | 2989 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,203 psi | 88% | 3022 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 57,580 psi | 89% | 2999 fps | 97.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 58,769 psi | 90% | 3022 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,347 psi | 85% | 2969 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,927 psi | 86% | 2972 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,246 psi | 87% | 3005 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,566 psi | 89% | 2949 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,550 psi | 85% | 3031 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,232 psi | 88% | 2923 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,290 psi | 88% | 2995 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 57,957 psi | 89% | 3022 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,130 psi | 86% | 2881 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,289 psi | 87% | 2874 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,767 psi | 86% | 2920 fps | 97.3% |
| Somchem S321 | <<locked>> | 84% | 56,159 psi | 86% | 2982 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,448 psi | 85% | 2877 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,058 psi | 88% | 2989 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 57,580 psi | 89% | 3022 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,370 psi | 74% | 2972 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,912 psi | 86% | 2844 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,318 psi | 87% | 2864 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 58,131 psi | 89% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,535 psi | 85% | 2920 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,622 psi | 86% | 2949 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,797 psi | 87% | 3025 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 55,405 psi | 85% | 2946 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,334 psi | 88% | 2966 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,738 psi | 86% | 3031 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,698 psi | 63% | 2831 fps | 97.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,566 psi | 89% | 3009 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,259 psi | 85% | 2995 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 58,392 psi | 90% | 3097 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,301 psi | 51% | 2726 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 57,885 psi | 89% | 3028 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 2015 | <<locked>> | 80% | 46,775 psi | 72% | 2749 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,184 psi | 79% | 2864 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,073 psi | 60% | 2657 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,383 psi | 71% | 2818 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 51,140 psi | 79% | 2851 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 36,970 psi | 57% | 2648 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 35,781 psi | 55% | 2674 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 55,230 psi | 85% | 2835 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 43,134 psi | 66% | 2769 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 36,695 psi | 56% | 2615 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,266 psi | 70% | 2782 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 45,382 psi | 70% | 2776 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,997 psi | 82% | 2999 fps | 99.9% |
| Alliant Power Pro 2000-MR | 66.4 gr | 80% | 39,233 psi | 60% | 2792 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,071 psi | 55% | 2631 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,707 psi | 81% | 2851 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,841 psi | 60% | 2697 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,230 psi | 56% | 2694 fps | 95.4% |
| Alliant Reloder-17 | 65.4 gr | 80% | 31,140 psi | 48% | 2582 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 33,025 psi | 51% | 2638 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,914 psi | 60% | 2838 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 54,766 psi | 84% | 2831 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,496 psi | 65% | 2772 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 35,549 psi | 55% | 2631 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 50,792 psi | 78% | 2884 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,137 psi | 73% | 2779 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,005 psi | 68% | 2802 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,689 psi | 75% | 2953 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 52,054 psi | 80% | 2890 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,939 psi | 81% | 2913 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 39,175 psi | 60% | 2694 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 94% | 47,427 psi | 73% | 2913 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 94% | 51,735 psi | 80% | 2940 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 43,497 psi | 67% | 2782 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,951 psi | 48% | 2523 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,552 psi | 61% | 2749 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 94% | 47,906 psi | 74% | 2940 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,092 psi | 40% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,858 psi | 64% | 2733 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 43,062 psi | 66% | 2782 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,508 psi | 59% | 2648 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,760 psi | 72% | 2785 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 53,084 psi | 82% | 2812 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 47,906 psi | 74% | 2854 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,659 psi | 72% | 2812 fps | 95.2% |
| IMR 4831 | <<locked>> | 90% | 37,144 psi | 57% | 2690 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 39,769 psi | 61% | 2730 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 45,266 psi | 70% | 2782 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 51,227 psi | 79% | 2874 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,018 psi | 65% | 2749 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,308 psi | 67% | 2710 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 38,203 psi | 59% | 2651 fps | 98.5% |
| Lovex S065 | <<locked>> | 88% | 40,408 psi | 62% | 2694 fps | 95.1% |
| Lovex S070 | <<locked>> | 94% | 46,267 psi | 71% | 2831 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 42,177 psi | 65% | 2723 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 42,511 psi | 65% | 2736 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,203 psi | 59% | 2684 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 36,201 psi | 56% | 2680 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 37,826 psi | 58% | 2697 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 43,294 psi | 67% | 2838 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 45,252 psi | 70% | 2785 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,715 psi | 69% | 2808 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,936 psi | 75% | 2835 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,339 psi | 41% | 1670 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,807 psi | 78% | 2874 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 45,382 psi | 70% | 2795 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,901 psi | 63% | 2805 fps | 97.5% |
| ReloadSwiss RS 60 | 65.4 gr | 80% | 33,243 psi | 51% | 2657 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 38,334 psi | 59% | 2756 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,321 psi | 64% | 2828 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 45,861 psi | 71% | 2769 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,059 psi | 62% | 2671 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 33,315 psi | 51% | 2569 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 94% | 50,792 psi | 78% | 2884 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,408 psi | 62% | 2694 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,018 psi | 65% | 2749 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,203 psi | 59% | 2651 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 46,267 psi | 71% | 2831 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,838 psi | 83% | 2894 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,621 psi | 53% | 2628 fps | 96.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,693 psi | 83% | 2874 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,410 psi | 67% | 2756 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,800 psi | 64% | 2740 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,627 psi | 67% | 2684 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,143 psi | 56% | 2539 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 45,571 psi | 70% | 2749 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 49,066 psi | 75% | 2867 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 43,250 psi | 67% | 2684 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,250 psi | 67% | 2756 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 34,403 psi | 53% | 2582 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 28,210 psi | 43% | 2503 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 49,342 psi | 76% | 2749 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,990 psi | 68% | 2680 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,436 psi | 61% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,161 psi | 62% | 2667 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,590 psi | 50% | 2516 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 38,014 psi | 58% | 2687 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 45,368 psi | 70% | 2782 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 38,754 psi | 60% | 2654 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 37,231 psi | 57% | 2684 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 35,462 psi | 55% | 2713 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,038 psi | 48% | 2487 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 44,904 psi | 69% | 2825 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 47,616 psi | 73% | 2917 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,169 psi | 48% | 2654 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,104 psi | 63% | 2740 fps | 98.5% |
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 117 powders for .33 Nosler loaded with the .338 | 185gr | Barnes MRX BT. Alliant Reloder-17 delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 1,824 fps to 3,146 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.338" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .33 Nosler with the .338 | 185gr | Barnes MRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.