Load Specifications
Load data in caliber .308 Norma Mag. with .3085 | 150gr | Prvi Partizan FMJ bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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.
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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% | 55,840 psi | 88% | 2956 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,303 psi | 87% | 2986 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,681 psi | 89% | 3054 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,363 psi | 90% | 3038 fps | 97.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,137 psi | 72% | 2930 fps | 97% |
| Accurate 4064 | <<locked>> | 88% | 55,361 psi | 87% | 3035 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,738 psi | 87% | 3127 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 55,129 psi | 86% | 3064 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 56,318 psi | 88% | 3068 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,450 psi | 90% | 3068 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,274 psi | 87% | 2989 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,187 psi | 86% | 3192 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,579 psi | 89% | 3091 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,971 psi | 89% | 3114 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,536 psi | 89% | 3186 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,346 psi | 85% | 3166 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,482 psi | 68% | 2959 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,414 psi | 77% | 3146 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,085 psi | 86% | 3081 fps | 99.7% |
| Bofors RP3 | <<locked>> | 90% | 57,522 psi | 90% | 3107 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,043 psi | 89% | 3074 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,361 psi | 87% | 2992 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,290 psi | 90% | 3097 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,476 psi | 85% | 3061 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 94% | 54,549 psi | 85% | 3117 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 92% | 54,911 psi | 86% | 3081 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 84% | 55,724 psi | 87% | 3077 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,536 psi | 89% | 3104 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,622 psi | 87% | 3110 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,027 psi | 86% | 3153 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,810 psi | 56% | 1913 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,956 psi | 89% | 3077 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,927 psi | 88% | 3058 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,593 psi | 87% | 3048 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,376 psi | 87% | 3025 fps | 97.8% |
| IMR 4350 | <<locked>> | 96% | 54,215 psi | 85% | 3048 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,317 psi | 87% | 3051 fps | 97.8% |
| IMR 4831 | <<locked>> | 98% | 56,217 psi | 88% | 3117 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 55,027 psi | 86% | 3091 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,450 psi | 90% | 3068 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,288 psi | 87% | 3038 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,595 psi | 90% | 3038 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,782 psi | 87% | 3045 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,071 psi | 86% | 3048 fps | 98.8% |
| Lovex S070 | <<locked>> | 96% | 56,231 psi | 88% | 3087 fps | 98.2% |
| Norma 201 | <<locked>> | 86% | 57,334 psi | 90% | 3061 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,491 psi | 85% | 3009 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,217 psi | 88% | 3097 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,940 psi | 86% | 3097 fps | 96% |
| Norma MRPᴾ | <<locked>> | 100% | 48,936 psi | 77% | 3094 fps | 96.6% |
| Norma URP | <<locked>> | 96% | 54,447 psi | 85% | 3110 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 57,058 psi | 89% | 3123 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,043 psi | 89% | 3166 fps | 98.9% |
| Ramshot TAC | <<locked>> | 84% | 57,740 psi | 90% | 3087 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,682 psi | 90% | 3107 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,390 psi | 57% | 1959 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,650 psi | 86% | 3041 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,070 psi | 85% | 3123 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,838 psi | 84% | 3159 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,637 psi | 87% | 3150 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,665 psi | 86% | 3176 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 54,723 psi | 86% | 2989 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,462 psi | 85% | 3009 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,319 psi | 90% | 3097 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 57,043 psi | 89% | 3074 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,071 psi | 86% | 3048 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,288 psi | 87% | 3038 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,782 psi | 87% | 3045 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,231 psi | 88% | 3087 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,347 psi | 87% | 3104 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,521 psi | 89% | 3064 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,087 psi | 89% | 3087 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,897 psi | 86% | 2943 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,579 psi | 87% | 2943 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,332 psi | 87% | 2999 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 54,708 psi | 86% | 2943 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,115 psi | 88% | 3054 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,479 psi | 90% | 3097 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,710 psi | 89% | 3169 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,301 psi | 82% | 3041 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 84% | 55,288 psi | 87% | 2927 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,317 psi | 85% | 2969 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,114 psi | 86% | 2989 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,303 psi | 87% | 3018 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,000 psi | 89% | 3107 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 54,389 psi | 85% | 3012 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,710 psi | 89% | 3031 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,999 psi | 88% | 3110 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,457 psi | 76% | 3045 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,014 psi | 89% | 3081 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,563 psi | 86% | 3058 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,795 psi | 86% | 3123 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,189 psi | 61% | 2979 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,261 psi | 90% | 3097 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% | 52,489 psi | 82% | 2907 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,455 psi | 71% | 2831 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,808 psi | 83% | 2992 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 47,065 psi | 74% | 2858 fps | 95.2% |
| Accurate 3100 | <<locked>> | 96% | 40,190 psi | 63% | 2812 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 42,975 psi | 67% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 34,200 psi | 54% | 2694 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 48,602 psi | 76% | 2953 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 41,176 psi | 65% | 2785 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,705 psi | 79% | 2956 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,532 psi | 81% | 2936 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,657 psi | 70% | 2992 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,205 psi | 65% | 2812 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,237 psi | 69% | 2884 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 82% | 34,142 psi | 54% | 2710 fps | 95.1% |
| Alliant Reloder-17 | 61.5 gr | 80% | 35,781 psi | 56% | 2779 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 31,792 psi | 50% | 2664 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 92% | 36,985 psi | 58% | 2861 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,037 psi | 75% | 2956 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 41,162 psi | 65% | 2818 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 47,297 psi | 74% | 2904 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,185 psi | 82% | 2943 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,096 psi | 79% | 2982 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,742 psi | 65% | 2818 fps | 97% |
| Hodgdon H414 | <<locked>> | 88% | 44,701 psi | 70% | 2933 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 48,254 psi | 76% | 2956 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,139 psi | 77% | 2963 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,385 psi | 46% | 2539 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,382 psi | 71% | 2933 fps | 99.7% |
| Hodgdon Superformance | 73.2 gr | 90% | 47,718 psi | 75% | 3018 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 42% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,036 psi | 74% | 2910 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 49,168 psi | 77% | 2956 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,250 psi | 68% | 2822 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,672 psi | 72% | 2848 fps | 95.8% |
| IMR 4350 | <<locked>> | 92% | 47,848 psi | 75% | 2933 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,395 psi | 68% | 2825 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 35,418 psi | 56% | 2707 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 45,368 psi | 71% | 2917 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 50,705 psi | 79% | 2956 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,153 psi | 75% | 2927 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,167 psi | 75% | 2881 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 43,482 psi | 68% | 2828 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 40,582 psi | 64% | 2769 fps | 95.8% |
| Lovex S070 | <<locked>> | 88% | 43,729 psi | 69% | 2854 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 47,558 psi | 75% | 2900 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 47,979 psi | 75% | 2904 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,627 psi | 68% | 2871 fps | 98.9% |
| Norma 204 | <<locked>> | 94% | 51,343 psi | 80% | 3035 fps | 95.2% |
| Norma MRP | <<locked>> | 98% | 45,701 psi | 72% | 3028 fps | 95.6% |
| Norma URP | <<locked>> | 82% | 34,432 psi | 54% | 2697 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 43,453 psi | 68% | 2884 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 40,828 psi | 64% | 2858 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 50,546 psi | 79% | 2966 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,502 psi | 79% | 2989 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,006 psi | 42% | 1749 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,061 psi | 66% | 2802 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,166 psi | 74% | 3002 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,058 psi | 60% | 2851 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 36,361 psi | 57% | 2769 fps | 95.5% |
| ReloadSwiss RS 70 | 67.2 gr | 86% | 38,696 psi | 61% | 2841 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 51,503 psi | 81% | 2936 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,324 psi | 71% | 2848 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 38,653 psi | 61% | 2759 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 47,297 psi | 74% | 2904 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 40,582 psi | 64% | 2769 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,153 psi | 75% | 2927 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,482 psi | 68% | 2828 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 43,729 psi | 69% | 2854 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,769 psi | 62% | 2812 fps | 98.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,110 psi | 77% | 2940 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,108 psi | 74% | 2917 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,646 psi | 76% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,799 psi | 64% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 45,498 psi | 71% | 2825 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 48,327 psi | 76% | 2841 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,878 psi | 77% | 2933 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 39,392 psi | 62% | 2762 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 28,819 psi | 45% | 2579 fps | 96.3% |
| Somchem S385 | <<locked>> | 96% | 45,919 psi | 72% | 2923 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 49,081 psi | 77% | 2835 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,092 psi | 71% | 2825 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,397 psi | 71% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,463 psi | 59% | 2694 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 35,781 psi | 56% | 2697 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 50,908 psi | 80% | 2956 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,845 psi | 69% | 2818 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,317 psi | 55% | 2697 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 88% | 32,503 psi | 51% | 2690 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,127 psi | 52% | 2612 fps | 96.9% |
| Winchester 748 | <<locked>> | 80% | 51,053 psi | 80% | 3002 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,846 psi | 70% | 2936 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 92% | 30,124 psi | 47% | 2694 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,688 psi | 73% | 2920 fps | 99.6% |
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 .308 Norma Mag. loaded with the .3085 | 150gr | Prvi Partizan FMJ. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,192 fps; across all powders the maximum-charge window runs from 1,913 fps to 3,192 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 (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.3085" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .308 Norma Mag. with the .3085 | 150gr | Prvi Partizan FMJ they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.