Load Specifications
Bullet:.284 | 168gr | Barnes LRX BT
Bullet Manufacturer:Barnes
Bullet Weight:168 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7-.300 Norma Mag. load data
Case Length (l3):2.492"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:102 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:9.0
Load data in caliber 7-.300 Norma Mag. with .284 | 168gr | Barnes LRX BT bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 80 and Vihtavuori N570.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 56,927 psi | 89% | 2933 fps | 100% |
| Accurate 3100 | <<locked>> | 88% | 57,522 psi | 90% | 2940 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 55,811 psi | 87% | 3051 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 55,999 psi | 88% | 3048 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 86% | 56,768 psi | 89% | 3061 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 84% | 54,708 psi | 86% | 2969 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 55,303 psi | 87% | 2979 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 56,971 psi | 89% | 3045 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 57,566 psi | 90% | 3054 fps | 100% |
| ADI AR 2217 | <<locked>> | 96% | 55,593 psi | 87% | 3022 fps | 100% |
| ADI AR 2217 | <<locked>> | 96% | 56,376 psi | 88% | 3035 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 55,796 psi | 87% | 3146 fps | 99% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 56,811 psi | 89% | 3166 fps | 99.2% |
| ADI AR 2225 | <<locked>> | 98% | 54,389 psi | 85% | 3041 fps | 100% |
| ADI AR 2225 | <<locked>> | 98% | 55,347 psi | 87% | 3054 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 55,477 psi | 87% | 2976 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 54,331 psi | 85% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 54,897 psi | 86% | 2969 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,276 psi | 90% | 3038 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 54,244 psi | 85% | 2989 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,347 psi | 87% | 2936 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,985 psi | 88% | 2946 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 55,695 psi | 87% | 3015 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 56,507 psi | 89% | 3025 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 55,999 psi | 88% | 3028 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 56,637 psi | 89% | 3038 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 57,682 psi | 90% | 3127 fps | 99% |
| Alliant Reloder-33 | <<locked>> | 96% | 54,317 psi | 85% | 3071 fps | 98.5% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 52,823 psi | 83% | 3038 fps | 97.8% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 53,635 psi | 84% | 3054 fps | 98% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,334 psi | 90% | 3005 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 54,375 psi | 85% | 2959 fps | 98.6% |
| Bofors RP15 | <<locked>> | 90% | 56,463 psi | 88% | 3022 fps | 100% |
| Bofors RP15 | <<locked>> | 90% | 57,246 psi | 90% | 3038 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 55,405 psi | 87% | 3035 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 56,159 psi | 88% | 3045 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 57,276 psi | 90% | 3038 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 54,244 psi | 85% | 2989 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 57,246 psi | 90% | 3045 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 53,925 psi | 85% | 2995 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 55,869 psi | 88% | 2972 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 86% | 56,623 psi | 89% | 2986 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 86% | 54,795 psi | 86% | 2956 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 55,550 psi | 87% | 2972 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 54,940 psi | 86% | 2867 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 55,593 psi | 87% | 2877 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 54,955 psi | 86% | 3107 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 55,811 psi | 87% | 3120 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,739 psi | 59% | 1886 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,724 psi | 59% | 1893 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,971 psi | 89% | 2940 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 57,334 psi | 90% | 2946 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,580 psi | 90% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,275 psi | 88% | 2949 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,768 psi | 89% | 2959 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 88% | 55,347 psi | 87% | 3025 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 88% | 55,970 psi | 88% | 3038 fps | 100% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,301 psi | 84% | 3018 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 54,012 psi | 85% | 3031 fps | 100% |
| Lovex S071 | <<locked>> | 92% | 54,969 psi | 86% | 2904 fps | 100% |
| Lovex S071 | <<locked>> | 92% | 55,564 psi | 87% | 2913 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 54,505 psi | 85% | 3041 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,303 psi | 87% | 3054 fps | 100% |
| Norma MRP | <<locked>> | 86% | 57,508 psi | 90% | 3054 fps | 100% |
| Norma MRP | <<locked>> | 84% | 54,201 psi | 85% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,521 psi | 89% | 3048 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 57,392 psi | 90% | 3064 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 54,766 psi | 86% | 2972 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 55,506 psi | 87% | 2986 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,595 psi | 60% | 1929 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,740 psi | 61% | 1936 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 55,550 psi | 87% | 3094 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 56,579 psi | 89% | 3107 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 54,665 psi | 86% | 3058 fps | 99.7% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 55,593 psi | 87% | 3074 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 84% | 55,100 psi | 86% | 2936 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 84% | 55,651 psi | 87% | 2946 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 86% | 57,566 psi | 90% | 3002 fps | 100% |
| Rottweil R 905 | <<locked>> | 84% | 54,534 psi | 85% | 2956 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,174 psi | 90% | 2999 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 54,157 psi | 85% | 2953 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,420 psi | 88% | 2930 fps | 99.8% |
| Somchem S361 | <<locked>> | 84% | 57,072 psi | 89% | 2940 fps | 99.8% |
| Somchem S365 | <<locked>> | 82% | 57,087 psi | 89% | 2930 fps | 100% |
| Somchem S365 | <<locked>> | 82% | 57,566 psi | 90% | 2936 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 54,273 psi | 85% | 2917 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 54,824 psi | 86% | 2927 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 54,331 psi | 85% | 2904 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 54,853 psi | 86% | 2917 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 56,884 psi | 89% | 2989 fps | 97.5% |
| Vihtavuori N170 | <<locked>> | 94% | 57,725 psi | 90% | 3002 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 86% | 57,174 psi | 90% | 2963 fps | 100% |
| Vihtavuori N555 | <<locked>> | 84% | 53,998 psi | 85% | 2920 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,927 psi | 89% | 3061 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 86% | 57,508 psi | 90% | 3068 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 92% | 57,580 psi | 90% | 3048 fps | 100% |
| Vihtavuori N565 | <<locked>> | 90% | 54,491 psi | 85% | 3002 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 94% | 55,419 psi | 87% | 3064 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 94% | 56,130 psi | 88% | 3077 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 96% | 56,565 psi | 89% | 3127 fps | 98.5% |
| Vihtavuori N570 | <<locked>> | 96% | 57,551 psi | 90% | 3146 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 55,259 psi | 87% | 3025 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 88% | 56,231 psi | 88% | 3038 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 53,983 psi | 85% | 2913 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 54,708 psi | 86% | 2927 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 43,250 psi | 68% | 2710 fps | 100% |
| Accurate 3100 | <<locked>> | 80% | 43,830 psi | 69% | 2720 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 48,399 psi | 76% | 2920 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 80% | 45,223 psi | 71% | 2851 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 80% | 45,803 psi | 72% | 2864 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 80% | 47,703 psi | 75% | 2848 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 80% | 48,298 psi | 76% | 2861 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 80% | 42,989 psi | 67% | 2792 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 80% | 43,395 psi | 68% | 2802 fps | 98.6% |
| ADI AR 2217 | <<locked>> | 80% | 31,705 psi | 50% | 2520 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 80% | 32,155 psi | 50% | 2536 fps | 95.4% |
| ADI AR 2218 | <<locked>> | 94% | 44,657 psi | 70% | 2923 fps | 96.2% |
| ADI AR 2218 | <<locked>> | 92% | 42,090 psi | 66% | 2864 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 80% | 29,066 psi | 46% | 2490 fps | 97.1% |
| ADI AR 2225 | <<locked>> | 80% | 29,472 psi | 46% | 2503 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 48,617 psi | 76% | 2858 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,572 psi | 75% | 2841 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,167 psi | 75% | 2851 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,656 psi | 68% | 2795 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,048 psi | 69% | 2805 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,366 psi | 66% | 2726 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,786 psi | 67% | 2733 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,550 psi | 57% | 2671 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,101 psi | 58% | 2684 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,051 psi | 75% | 2904 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,660 psi | 76% | 2913 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 42,424 psi | 66% | 2841 fps | 95.5% |
| Alliant Reloder-33 | <<locked>> | 90% | 43,221 psi | 68% | 2858 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 96% | 45,208 psi | 71% | 2894 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 94% | 42,641 psi | 67% | 2838 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 41,481 psi | 65% | 2707 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 41,872 psi | 66% | 2717 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 40,437 psi | 63% | 2730 fps | 98.8% |
| Bofors RP15 | <<locked>> | 80% | 41,017 psi | 64% | 2743 fps | 98.9% |
| Bofors RP30 | <<locked>> | 80% | 33,982 psi | 53% | 2598 fps | 96.3% |
| Bofors RP30 | <<locked>> | 80% | 34,505 psi | 54% | 2612 fps | 96.6% |
| Bofors RP5 | <<locked>> | 80% | 43,656 psi | 68% | 2795 fps | 99.4% |
| Bofors RP5 | <<locked>> | 80% | 44,048 psi | 69% | 2805 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 80% | 34,606 psi | 54% | 2605 fps | 97.1% |
| Hodgdon H1000 | <<locked>> | 80% | 35,099 psi | 55% | 2618 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 80% | 45,469 psi | 71% | 2792 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 80% | 45,992 psi | 72% | 2802 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,744 psi | 70% | 2776 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,107 psi | 71% | 2785 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,401 psi | 81% | 2815 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,083 psi | 82% | 2828 fps | 100% |
| Hodgdon Retumbo | 70.7 gr | 80% | 35,752 psi | 56% | 2717 fps | 98.6% |
| Hodgdon Retumbo | 70.7 gr | 80% | 36,303 psi | 57% | 2730 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,253 psi | 44% | 1686 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,340 psi | 44% | 1693 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,316 psi | 84% | 2884 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,882 psi | 84% | 2894 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,780 psi | 84% | 2881 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,398 psi | 73% | 2779 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,920 psi | 74% | 2792 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 80% | 41,640 psi | 65% | 2772 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 80% | 42,250 psi | 66% | 2785 fps | 98.5% |
| IMR 8133 Enduron | <<locked>> | 86% | 32,735 psi | 51% | 2589 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 86% | 33,228 psi | 52% | 2598 fps | 95.9% |
| Lovex S071 | <<locked>> | 80% | 37,144 psi | 58% | 2582 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 37,710 psi | 59% | 2595 fps | 99.7% |
| Norma 217 | <<locked>> | 82% | 28,616 psi | 45% | 2487 fps | 96% |
| Norma 217 | <<locked>> | 80% | 27,006 psi | 42% | 2434 fps | 95% |
| Norma MRP | <<locked>> | 80% | 46,311 psi | 73% | 2867 fps | 100% |
| Norma MRP | <<locked>> | 80% | 46,905 psi | 74% | 2877 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 41,742 psi | 65% | 2785 fps | 98.6% |
| Ramshot Grand | <<locked>> | 80% | 42,351 psi | 66% | 2799 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 80% | 37,507 psi | 59% | 2661 fps | 99% |
| Ramshot Magnum | <<locked>> | 80% | 38,058 psi | 60% | 2671 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,051 psi | 46% | 1729 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,979 psi | 45% | 1732 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 34,925 psi | 55% | 2687 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 35,404 psi | 55% | 2703 fps | 99.3% |
| ReloadSwiss RS 80 | 80 gr | 84% | 37,202 psi | 58% | 2710 fps | 95.9% |
| ReloadSwiss RS 80 | 78.1 gr | 82% | 34,853 psi | 55% | 2651 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 48,414 psi | 76% | 2818 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 80% | 48,994 psi | 77% | 2831 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 80% | 47,210 psi | 74% | 2831 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 47,630 psi | 75% | 2841 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,862 psi | 73% | 2828 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,297 psi | 74% | 2835 fps | 99.8% |
| Somchem S361 | <<locked>> | 80% | 49,298 psi | 77% | 2812 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 49,951 psi | 78% | 2825 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 53,243 psi | 83% | 2874 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 53,911 psi | 84% | 2887 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,529 psi | 74% | 2802 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,921 psi | 75% | 2812 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 41,495 psi | 65% | 2680 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 80% | 42,003 psi | 66% | 2690 fps | 99.5% |
| Vihtavuori N170 | <<locked>> | 88% | 46,398 psi | 73% | 2802 fps | 95.1% |
| Vihtavuori N170 | <<locked>> | 88% | 47,007 psi | 74% | 2815 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 80% | 46,760 psi | 73% | 2802 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 47,413 psi | 74% | 2812 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,006 psi | 72% | 2864 fps | 98.7% |
| Vihtavuori N560 | <<locked>> | 80% | 46,572 psi | 73% | 2877 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 80% | 38,029 psi | 60% | 2674 fps | 97% |
| Vihtavuori N565 | <<locked>> | 80% | 38,551 psi | 60% | 2690 fps | 97.2% |
| Vihtavuori N568 | <<locked>> | 84% | 38,363 psi | 60% | 2726 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 82% | 36,318 psi | 57% | 2677 fps | 95% |
| Vihtavuori N570 | 80.7 gr | 88% | 42,293 psi | 66% | 2851 fps | 95% |
| Vihtavuori N570 | 80.7 gr | 88% | 43,004 psi | 67% | 2867 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,770 psi | 64% | 2789 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,466 psi | 65% | 2802 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,816 psi | 69% | 2736 fps | 99.4% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,353 psi | 70% | 2746 fps | 99.5% |
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 105 powders for 7-.300 Norma Mag. loaded with the .284 | 168gr | Barnes LRX BT. ADI AR 2218 delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,166 fps. ADI AR 2218 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2218, Alliant Reloder-50 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. Hodgdon Retumbo, ReloadSwiss RS 80, Vihtavuori N570 rank at the top here: for 7-.300 Norma Mag. with the .284 | 168gr | Barnes LRX BT 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.