Load Specifications
Load data in caliber .33 Nosler with .338 | 180gr | Impala LW CFN bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and ReloadSwiss RS 70.
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.
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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>> | 82% | 56,666 psi | 87% | 2913 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,334 psi | 88% | 2953 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,246 psi | 88% | 3002 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,392 psi | 88% | 2976 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,746 psi | 72% | 2887 fps | 96.4% |
| Accurate 4064 | <<locked>> | 88% | 57,029 psi | 88% | 2999 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,927 psi | 86% | 3074 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 58,610 psi | 90% | 3061 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 55,927 psi | 86% | 3005 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,363 psi | 88% | 3009 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,201 psi | 85% | 2940 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 58,276 psi | 90% | 3186 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,695 psi | 87% | 3038 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,029 psi | 88% | 3054 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,883 psi | 86% | 3120 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 57,159 psi | 88% | 3159 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,888 psi | 68% | 2913 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,124 psi | 76% | 3081 fps | 98.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 58,334 psi | 90% | 3074 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 57,798 psi | 89% | 3054 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,246 psi | 88% | 3015 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,579 psi | 86% | 2936 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,348 psi | 88% | 3041 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 58,233 psi | 90% | 3064 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 96% | 57,580 psi | 89% | 3110 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 94% | 57,798 psi | 89% | 3068 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 84% | 55,956 psi | 86% | 3022 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,883 psi | 86% | 3045 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 58,755 psi | 90% | 3107 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 58,073 psi | 89% | 3143 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 56% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,623 psi | 87% | 3018 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,999 psi | 86% | 3009 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,521 psi | 85% | 2989 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 58,624 psi | 90% | 3015 fps | 97.8% |
| IMR 4350 | <<locked>> | 98% | 57,087 psi | 88% | 3038 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 94% | 58,508 psi | 90% | 3041 fps | 97.7% |
| IMR 4831 | <<locked>> | 98% | 55,854 psi | 86% | 3058 fps | 99.4% |
| IMR 4895 | <<locked>> | 88% | 58,436 psi | 90% | 3087 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,363 psi | 88% | 3009 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,898 psi | 86% | 2992 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,580 psi | 89% | 2979 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 56,144 psi | 86% | 2992 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 58,610 psi | 90% | 3041 fps | 98.8% |
| Lovex S070 | <<locked>> | 96% | 56,521 psi | 87% | 3028 fps | 97.7% |
| Norma 201 | <<locked>> | 86% | 57,986 psi | 89% | 3012 fps | 100% |
| Norma 202 | <<locked>> | 86% | 58,117 psi | 89% | 3009 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,304 psi | 87% | 3041 fps | 99.9% |
| Norma 204 | <<locked>> | 98% | 57,769 psi | 89% | 3084 fps | 95.8% |
| Norma URP | <<locked>> | 98% | 57,638 psi | 89% | 3104 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 56,681 psi | 87% | 3064 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 56,217 psi | 86% | 3097 fps | 98.3% |
| Ramshot TAC | <<locked>> | 84% | 57,609 psi | 89% | 3025 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,580 psi | 89% | 3048 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 58,276 psi | 90% | 3009 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,927 psi | 57% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 58,160 psi | 89% | 3038 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 57,522 psi | 88% | 3127 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,840 psi | 87% | 3159 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 58,639 psi | 90% | 3143 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,609 psi | 89% | 3166 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 82% | 56,347 psi | 87% | 2949 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,595 psi | 90% | 3009 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,870 psi | 89% | 3051 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 57,246 psi | 88% | 3015 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 96% | 58,610 psi | 90% | 3041 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,898 psi | 86% | 2992 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,144 psi | 86% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,521 psi | 87% | 3028 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 58,581 psi | 90% | 3100 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,652 psi | 87% | 3009 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,029 psi | 88% | 3031 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 58,566 psi | 90% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 58,798 psi | 90% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,608 psi | 86% | 2940 fps | 97.2% |
| Somchem S335 | <<locked>> | 86% | 58,436 psi | 90% | 2940 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,985 psi | 86% | 2995 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 57,725 psi | 89% | 3045 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,811 psi | 86% | 3110 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,243 psi | 80% | 2986 fps | 96% |
| Vihtavuori N130 | <<locked>> | 82% | 58,334 psi | 90% | 2900 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 58,610 psi | 90% | 2920 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 58,262 psi | 90% | 2972 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 58,523 psi | 90% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,550 psi | 85% | 2966 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,391 psi | 87% | 3045 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 84% | 57,957 psi | 89% | 3009 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,913 psi | 88% | 2982 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,738 psi | 86% | 3054 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,646 psi | 75% | 2999 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,333 psi | 87% | 3018 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 58,218 psi | 90% | 3061 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,798 psi | 89% | 3114 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,929 psi | 61% | 2930 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,072 psi | 88% | 3041 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% | 53,650 psi | 83% | 2867 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 48,066 psi | 74% | 2815 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,737 psi | 83% | 2949 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 50,923 psi | 78% | 2864 fps | 95.4% |
| Accurate 3100 | <<locked>> | 98% | 43,976 psi | 68% | 2835 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 45,382 psi | 70% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 35,998 psi | 55% | 2680 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 49,255 psi | 76% | 2904 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 42,018 psi | 65% | 2746 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,053 psi | 79% | 2904 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 52,083 psi | 80% | 2894 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,933 psi | 69% | 2936 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,250 psi | 65% | 2776 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,092 psi | 69% | 2841 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 37,159 psi | 57% | 2726 fps | 95.6% |
| Alliant Reloder-17 | 67.8 gr | 80% | 36,782 psi | 57% | 2746 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 33,141 psi | 51% | 2644 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 94% | 40,437 psi | 62% | 2890 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,269 psi | 74% | 2904 fps | 98.5% |
| Bofors RP3 | <<locked>> | 80% | 42,714 psi | 66% | 2792 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 48,066 psi | 74% | 2854 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,460 psi | 81% | 2887 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,618 psi | 78% | 2936 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,033 psi | 66% | 2785 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 90% | 47,892 psi | 74% | 2940 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 90% | 51,271 psi | 79% | 2953 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,777 psi | 77% | 2917 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,009 psi | 48% | 2526 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,803 psi | 70% | 2887 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 90% | 47,688 psi | 73% | 2956 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 42% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,398 psi | 73% | 2858 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 49,617 psi | 76% | 2910 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,164 psi | 68% | 2782 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,325 psi | 71% | 2795 fps | 95.2% |
| IMR 4350 | <<locked>> | 94% | 50,836 psi | 78% | 2930 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 46,456 psi | 71% | 2828 fps | 95.1% |
| IMR 4831 | <<locked>> | 84% | 36,782 psi | 57% | 2684 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 46,166 psi | 71% | 2874 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 51,053 psi | 79% | 2904 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 49,255 psi | 76% | 2887 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,559 psi | 75% | 2828 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 44,628 psi | 69% | 2792 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 41,698 psi | 64% | 2733 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 44,846 psi | 69% | 2815 fps | 95% |
| Norma 201 | <<locked>> | 80% | 48,863 psi | 75% | 2858 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 48,733 psi | 75% | 2861 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,541 psi | 69% | 2828 fps | 98.7% |
| Norma 204 | <<locked>> | 96% | 54,215 psi | 83% | 3025 fps | 95% |
| Norma URP | <<locked>> | 84% | 37,753 psi | 58% | 2723 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 43,888 psi | 68% | 2838 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 43,961 psi | 68% | 2867 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 50,879 psi | 78% | 2910 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,676 psi | 78% | 2936 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 54,665 psi | 84% | 2953 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,673 psi | 43% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 45,759 psi | 70% | 2818 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,485 psi | 73% | 2949 fps | 98.7% |
| ReloadSwiss RS 60 | 67.8 gr | 80% | 38,870 psi | 60% | 2815 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 37,492 psi | 58% | 2743 fps | 95.2% |
| ReloadSwiss RS 70 | 74.1 gr | 86% | 39,436 psi | 61% | 2799 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 53,171 psi | 82% | 2900 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,572 psi | 72% | 2808 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 40,437 psi | 62% | 2736 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 48,066 psi | 74% | 2854 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,698 psi | 64% | 2733 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,255 psi | 76% | 2887 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,628 psi | 69% | 2792 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 44,846 psi | 69% | 2815 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,466 psi | 62% | 2772 fps | 97.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,024 psi | 77% | 2894 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,558 psi | 73% | 2867 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,458 psi | 76% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,669 psi | 64% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 46,311 psi | 71% | 2779 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 49,414 psi | 76% | 2802 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,240 psi | 76% | 2884 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 40,770 psi | 63% | 2736 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 30,516 psi | 47% | 2572 fps | 96.5% |
| Somchem S385 | <<locked>> | 98% | 49,168 psi | 76% | 2930 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 55,187 psi | 85% | 2854 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 49,603 psi | 76% | 2789 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,180 psi | 71% | 2789 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,209 psi | 71% | 2792 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,754 psi | 60% | 2664 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 36,869 psi | 57% | 2667 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 51,329 psi | 79% | 2904 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 44,802 psi | 69% | 2782 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 38,856 psi | 60% | 2726 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 88% | 33,910 psi | 52% | 2674 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,316 psi | 53% | 2582 fps | 96.7% |
| Winchester 748 | <<locked>> | 80% | 51,242 psi | 79% | 2953 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 47,892 psi | 74% | 2940 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 92% | 31,604 psi | 49% | 2674 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,253 psi | 73% | 2874 fps | 99.4% |
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 95 powders for .33 Nosler loaded with the .338 | 180gr | Impala LW CFN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,186 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,186 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.338" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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-17, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .33 Nosler with the .338 | 180gr | Impala LW CFN 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.