Load Specifications
Load data in caliber .30-06 Spring. with .308 | 200gr | Alaska Bullet Works Kodiak PP SPBC 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% | 51,706 psi | 88% | 2379 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 50,444 psi | 86% | 2405 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 51,779 psi | 88% | 2457 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,982 psi | 90% | 2448 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 40,538 psi | 69% | 2359 fps | 96.6% |
| Accurate 4064 | <<locked>> | 88% | 50,415 psi | 86% | 2448 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 52,982 psi | 90% | 2566 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 50,879 psi | 87% | 2470 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 51,909 psi | 88% | 2474 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 49,893 psi | 85% | 2425 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 50,517 psi | 86% | 2405 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 49,893 psi | 85% | 2569 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 51,721 psi | 88% | 2490 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 52,185 psi | 89% | 2510 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 51,242 psi | 87% | 2569 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 51,924 psi | 88% | 2598 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,841 psi | 66% | 2385 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,395 psi | 74% | 2533 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 50,343 psi | 86% | 2484 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 52,112 psi | 89% | 2507 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 52,431 psi | 89% | 2480 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 51,793 psi | 88% | 2411 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 52,315 psi | 89% | 2497 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 53,055 psi | 90% | 2516 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 96% | 52,446 psi | 89% | 2562 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 92% | 50,154 psi | 85% | 2484 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 84% | 51,372 psi | 87% | 2480 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,821 psi | 87% | 2507 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 50,502 psi | 86% | 2510 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 52,895 psi | 90% | 2595 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 61% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,489 psi | 89% | 2480 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 51,314 psi | 87% | 2464 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 51,503 psi | 88% | 2457 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 51,329 psi | 87% | 2438 fps | 97.8% |
| IMR 4350 | <<locked>> | 98% | 52,344 psi | 89% | 2500 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 51,155 psi | 87% | 2464 fps | 97.7% |
| IMR 4831 | <<locked>> | 98% | 50,343 psi | 86% | 2513 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 50,473 psi | 86% | 2493 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 49,893 psi | 85% | 2425 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 50,473 psi | 86% | 2451 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 50,705 psi | 86% | 2408 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 51,358 psi | 87% | 2457 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 50,357 psi | 86% | 2457 fps | 98.7% |
| Lovex S070 | <<locked>> | 96% | 51,082 psi | 87% | 2487 fps | 98% |
| Norma 201 | <<locked>> | 86% | 53,069 psi | 90% | 2467 fps | 100% |
| Norma 202 | <<locked>> | 84% | 50,299 psi | 86% | 2425 fps | 100% |
| Norma 203B | <<locked>> | 88% | 51,445 psi | 88% | 2497 fps | 100% |
| Norma 204 | <<locked>> | 98% | 52,823 psi | 90% | 2543 fps | 96.4% |
| Norma MRPᴾ | <<locked>> | 100% | 43,366 psi | 74% | 2493 fps | 96% |
| Norma URP | <<locked>> | 98% | 52,373 psi | 89% | 2556 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 51,851 psi | 88% | 2523 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 50,981 psi | 87% | 2549 fps | 98.6% |
| Ramshot TAC | <<locked>> | 82% | 49,821 psi | 85% | 2441 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 53,040 psi | 90% | 2507 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,955 psi | 61% | 1552 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 50,082 psi | 85% | 2454 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 52,359 psi | 89% | 2566 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 51,764 psi | 88% | 2598 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 52,620 psi | 90% | 2585 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 52,344 psi | 89% | 2608 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 82% | 51,068 psi | 87% | 2408 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 50,241 psi | 86% | 2421 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 51,967 psi | 88% | 2497 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 52,431 psi | 89% | 2480 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 50,357 psi | 86% | 2457 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 50,473 psi | 86% | 2451 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 51,358 psi | 87% | 2457 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 51,082 psi | 87% | 2487 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 50,125 psi | 85% | 2503 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 51,547 psi | 88% | 2467 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 52,373 psi | 89% | 2490 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 51,358 psi | 87% | 2372 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 51,416 psi | 88% | 2372 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 50,415 psi | 86% | 2415 fps | 97.6% |
| Somchem S335 | <<locked>> | 84% | 50,647 psi | 86% | 2369 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 51,343 psi | 87% | 2464 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 52,489 psi | 89% | 2497 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,038 psi | 85% | 2556 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 46,746 psi | 80% | 2454 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 84% | 51,648 psi | 88% | 2359 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 50,067 psi | 85% | 2395 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 50,763 psi | 86% | 2408 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 50,386 psi | 86% | 2434 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 51,416 psi | 88% | 2507 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 50,169 psi | 85% | 2425 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 51,953 psi | 88% | 2448 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 50,459 psi | 86% | 2510 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,656 psi | 73% | 2457 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 51,329 psi | 87% | 2484 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 50,082 psi | 85% | 2467 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 52,794 psi | 90% | 2569 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,737 psi | 59% | 2395 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 86% | 52,156 psi | 89% | 2497 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% | 48,689 psi | 83% | 2339 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,568 psi | 71% | 2280 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,457 psi | 82% | 2415 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,439 psi | 74% | 2303 fps | 95.2% |
| Accurate 3100 | <<locked>> | 96% | 35,433 psi | 60% | 2264 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 39,305 psi | 67% | 2280 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 30,603 psi | 52% | 2172 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 44,976 psi | 77% | 2382 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 38,145 psi | 65% | 2247 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,021 psi | 80% | 2382 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 47,384 psi | 81% | 2365 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,654 psi | 69% | 2408 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,884 psi | 64% | 2270 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,654 psi | 69% | 2326 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 82% | 31,314 psi | 53% | 2185 fps | 95.3% |
| Alliant Reloder-17 | 44.6 gr | 80% | 32,706 psi | 56% | 2247 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,660 psi | 49% | 2149 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 92% | 32,851 psi | 56% | 2303 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,019 psi | 75% | 2385 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 37,391 psi | 64% | 2270 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 43,656 psi | 74% | 2343 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,573 psi | 83% | 2369 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,658 psi | 78% | 2405 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,319 psi | 65% | 2277 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 40,248 psi | 69% | 2362 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 90% | 46,978 psi | 80% | 2431 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 45,382 psi | 77% | 2388 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,963 psi | 46% | 2051 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,350 psi | 70% | 2369 fps | 99.7% |
| Hodgdon Superformance | 53 gr | 90% | 42,902 psi | 73% | 2431 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,469 psi | 45% | 1352 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,352 psi | 74% | 2346 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 44,933 psi | 76% | 2375 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,045 psi | 68% | 2277 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,598 psi | 73% | 2297 fps | 95.9% |
| IMR 4350 | <<locked>> | 92% | 43,656 psi | 74% | 2365 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,118 psi | 68% | 2277 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 31,923 psi | 54% | 2185 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 41,669 psi | 71% | 2352 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 47,021 psi | 80% | 2382 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,135 psi | 75% | 2359 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,846 psi | 76% | 2320 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 39,987 psi | 68% | 2280 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 35,012 psi | 60% | 2188 fps | 95.1% |
| Lovex S070 | <<locked>> | 88% | 39,914 psi | 68% | 2303 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 44,121 psi | 75% | 2336 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 44,338 psi | 75% | 2339 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,045 psi | 68% | 2316 fps | 99% |
| Norma 204 | <<locked>> | 96% | 49,385 psi | 84% | 2493 fps | 95.6% |
| Norma MRP | <<locked>> | 98% | 40,625 psi | 69% | 2438 fps | 95.1% |
| Norma URP | <<locked>> | 82% | 31,299 psi | 53% | 2178 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 39,363 psi | 67% | 2326 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 36,898 psi | 63% | 2303 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 46,818 psi | 80% | 2392 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,383 psi | 79% | 2411 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,876 psi | 46% | 1385 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,754 psi | 66% | 2260 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,830 psi | 73% | 2418 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,795 psi | 59% | 2306 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,561 psi | 55% | 2234 fps | 95.5% |
| ReloadSwiss RS 70 | 48.6 gr | 86% | 34,998 psi | 60% | 2290 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 48,167 psi | 82% | 2369 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,032 psi | 72% | 2297 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 35,230 psi | 60% | 2224 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 43,656 psi | 74% | 2343 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,012 psi | 60% | 2188 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,135 psi | 75% | 2359 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,987 psi | 68% | 2280 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 39,914 psi | 68% | 2303 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,230 psi | 62% | 2270 fps | 98.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,237 psi | 77% | 2372 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,453 psi | 74% | 2356 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,440 psi | 77% | 2290 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,840 psi | 64% | 2175 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 41,466 psi | 71% | 2274 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 45,078 psi | 77% | 2293 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,831 psi | 76% | 2365 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 36,216 psi | 62% | 2231 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 26,150 psi | 45% | 2083 fps | 96.5% |
| Somchem S385 | <<locked>> | 98% | 43,714 psi | 74% | 2405 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 45,774 psi | 78% | 2280 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,481 psi | 71% | 2274 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,887 psi | 71% | 2283 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,316 psi | 58% | 2172 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 32,532 psi | 55% | 2175 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 46,949 psi | 80% | 2379 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,393 psi | 69% | 2277 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 32,053 psi | 55% | 2178 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 88% | 28,834 psi | 49% | 2169 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,371 psi | 52% | 2110 fps | 97% |
| Winchester 748 | <<locked>> | 80% | 46,833 psi | 80% | 2421 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 40,509 psi | 69% | 2369 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,963 psi | 46% | 2165 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,873 psi | 73% | 2359 fps | 99.7% |
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 112 powders for .30-06 Spring. loaded with the .308 | 200gr | Alaska Bullet Works Kodiak PP SPBC. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,608 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,608 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:12.5 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 .30-06 Spring. with the .308 | 200gr | Alaska Bullet Works Kodiak PP SPBC 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.