Load Specifications
Load data in caliber 7 x 64 Brenneke with .284 | 175gr | Speer TBBC bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Alliant Reloder-26.
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 2495 | <<locked>> | 82% | 51,387 psi | 85% | 2438 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 52,823 psi | 88% | 2497 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,979 psi | 81% | 2530 fps | 99.2% |
| Accurate 4064 | <<locked>> | 84% | 51,750 psi | 86% | 2487 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 51,532 psi | 86% | 2575 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,375 psi | 90% | 2556 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 52,330 psi | 87% | 2516 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 52,779 psi | 88% | 2615 fps | 97.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 50,241 psi | 83% | 2602 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,215 psi | 90% | 2671 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 52,547 psi | 87% | 2533 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 52,866 psi | 88% | 2552 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 52,620 psi | 87% | 2628 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,359 psi | 89% | 2651 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 51,967 psi | 86% | 2605 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,646 psi | 81% | 2598 fps | 97.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,122 psi | 77% | 2549 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,306 psi | 67% | 2474 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,228 psi | 87% | 2720 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,128 psi | 90% | 2572 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 44,759 psi | 74% | 2530 fps | 96.3% |
| Bofors RP3 | <<locked>> | 86% | 53,098 psi | 88% | 2549 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,646 psi | 81% | 2598 fps | 97.4% |
| Bofors RP7 | <<locked>> | 90% | 52,779 psi | 88% | 2533 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 86% | 53,737 psi | 89% | 2566 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 53,824 psi | 89% | 2625 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 90% | 54,186 psi | 90% | 2589 fps | 98.4% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 54,099 psi | 90% | 2608 fps | 96.2% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 52,750 psi | 88% | 2589 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 52,460 psi | 87% | 2559 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 51,416 psi | 85% | 2549 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,824 psi | 89% | 2661 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 60% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,721 psi | 88% | 2520 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 51,822 psi | 86% | 2500 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,186 psi | 90% | 2526 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 53,577 psi | 89% | 2566 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,462 psi | 90% | 2556 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 52,069 psi | 87% | 2569 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,186 psi | 90% | 2579 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,460 psi | 87% | 2549 fps | 96.1% |
| Lovex S060 | <<locked>> | 82% | 53,606 psi | 89% | 2487 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 51,938 psi | 86% | 2497 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,462 psi | 90% | 2556 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 52,185 psi | 87% | 2546 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,712 psi | 68% | 2395 fps | 97.9% |
| Norma 201 | <<locked>> | 82% | 53,243 psi | 88% | 2503 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,708 psi | 89% | 2497 fps | 100% |
| Norma 203B | <<locked>> | 84% | 52,156 psi | 87% | 2539 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,954 psi | 90% | 2612 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 51,590 psi | 86% | 2677 fps | 99.1% |
| Norma URP | <<locked>> | 94% | 53,940 psi | 90% | 2612 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 52,504 psi | 87% | 2566 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 52,663 psi | 87% | 2615 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 42,380 psi | 70% | 2470 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,695 psi | 61% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,737 psi | 89% | 2549 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,708 psi | 89% | 2615 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,301 psi | 89% | 2648 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 51,372 psi | 85% | 2602 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,708 psi | 89% | 2677 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 53,882 psi | 90% | 2503 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,330 psi | 89% | 2546 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 51,358 psi | 85% | 2539 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,404 psi | 90% | 2641 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 90% | 52,779 psi | 88% | 2533 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,462 psi | 90% | 2556 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 51,938 psi | 86% | 2497 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,185 psi | 87% | 2546 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 51,358 psi | 85% | 2556 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 52,852 psi | 88% | 2530 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,157 psi | 90% | 2438 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 51,735 psi | 86% | 2405 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,215 psi | 90% | 2513 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,911 psi | 90% | 2635 fps | 98.3% |
| Somchem S335 | <<locked>> | 82% | 53,853 psi | 89% | 2438 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,432 psi | 89% | 2543 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 52,576 psi | 87% | 2533 fps | 95.8% |
| Somchem S365 | <<locked>> | 96% | 52,721 psi | 88% | 2615 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 51,576 psi | 86% | 2569 fps | 98.5% |
| Vihtavuori N135 | <<locked>> | 84% | 54,041 psi | 90% | 2464 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,447 psi | 90% | 2484 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 51,329 psi | 85% | 2477 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 52,736 psi | 88% | 2562 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,572 psi | 79% | 2497 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 52,562 psi | 87% | 2484 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 51,706 psi | 86% | 2566 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,532 psi | 86% | 2618 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 52,199 psi | 87% | 2667 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 52,257 psi | 87% | 2536 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,172 psi | 90% | 2628 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,539 psi | 69% | 2595 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 52,808 psi | 88% | 2536 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,808 psi | 86% | 2562 fps | 97.7% |
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 2495 | <<locked>> | 80% | 48,225 psi | 80% | 2395 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,456 psi | 77% | 2398 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 32,764 psi | 54% | 2234 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 45,658 psi | 76% | 2402 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,330 psi | 57% | 2277 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 80% | 51,169 psi | 85% | 2510 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,482 psi | 72% | 2379 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 92% | 43,671 psi | 73% | 2461 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 98% | 47,123 psi | 78% | 2546 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,137 psi | 78% | 2562 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,627 psi | 72% | 2398 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,702 psi | 78% | 2461 fps | 99.9% |
| Alliant Reloder-16 | 39.8 gr | 80% | 33,895 psi | 56% | 2287 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,072 psi | 63% | 2398 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 40,393 psi | 67% | 2405 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 40,030 psi | 67% | 2441 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 24,743 psi | 41% | 2067 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 92% | 31,647 psi | 53% | 2270 fps | 95.2% |
| Alliant Reloder-26 | 46.1 gr | 84% | 29,704 psi | 49% | 2264 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,647 psi | 84% | 2523 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 42,047 psi | 70% | 2480 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 43,642 psi | 73% | 2408 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 40,030 psi | 67% | 2441 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 38,783 psi | 64% | 2290 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 44,295 psi | 74% | 2418 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 36,216 psi | 60% | 2316 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 80% | 39,349 psi | 65% | 2336 fps | 95% |
| Hodgdon H4831 | <<locked>> | 98% | 50,401 psi | 84% | 2552 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 49,458 psi | 82% | 2536 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,285 psi | 52% | 2192 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,022 psi | 80% | 2500 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 37,942 psi | 63% | 2382 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 45% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,255 psi | 82% | 2470 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,745 psi | 76% | 2408 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,993 psi | 80% | 2431 fps | 98.3% |
| IMR 4350 | <<locked>> | 82% | 36,898 psi | 61% | 2277 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,234 psi | 67% | 2320 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 33,127 psi | 55% | 2238 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 47,906 psi | 80% | 2484 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 49,400 psi | 82% | 2500 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 50,444 psi | 84% | 2441 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,905 psi | 76% | 2405 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,782 psi | 63% | 2277 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 35,926 psi | 60% | 2257 fps | 95.6% |
| Lovex S071 | <<locked>> | 92% | 31,720 psi | 53% | 2211 fps | 95% |
| Norma 201 | <<locked>> | 80% | 50,053 psi | 83% | 2457 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,502 psi | 84% | 2457 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,079 psi | 77% | 2448 fps | 100% |
| Norma 204 | <<locked>> | 86% | 41,379 psi | 69% | 2402 fps | 95% |
| Norma MRP | <<locked>> | 90% | 36,912 psi | 61% | 2405 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 34,243 psi | 57% | 2274 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 45,861 psi | 76% | 2464 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 33,272 psi | 55% | 2260 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 39,436 psi | 66% | 2411 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 46% | 1424 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,266 psi | 74% | 2402 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,009 psi | 83% | 2562 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,495 psi | 67% | 2448 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,823 psi | 56% | 2290 fps | 97.3% |
| ReloadSwiss RS 70 | 43.5 gr | 80% | 33,228 psi | 55% | 2293 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 80% | 47,630 psi | 79% | 2415 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,075 psi | 68% | 2359 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 47,906 psi | 80% | 2487 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 92% | 41,713 psi | 69% | 2434 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 38,783 psi | 64% | 2290 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,782 psi | 63% | 2277 fps | 97.3% |
| Shooters World Precision | <<locked>> | 80% | 45,905 psi | 76% | 2405 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 35,926 psi | 60% | 2257 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,090 psi | 70% | 2408 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,487 psi | 82% | 2480 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,126 psi | 85% | 2398 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,062 psi | 72% | 2283 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,028 psi | 62% | 2228 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 41,307 psi | 69% | 2428 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 50,691 psi | 84% | 2398 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,684 psi | 69% | 2362 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 49,501 psi | 82% | 2484 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 30,951 psi | 51% | 2238 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 37,492 psi | 62% | 2326 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 47,834 psi | 79% | 2385 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,834 psi | 79% | 2395 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,639 psi | 66% | 2297 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,737 psi | 59% | 2274 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 39,073 psi | 65% | 2349 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 46,311 psi | 77% | 2395 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,259 psi | 59% | 2277 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 26,789 psi | 45% | 2136 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 98% | 48,718 psi | 81% | 2608 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,998 psi | 58% | 2251 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 36,448 psi | 61% | 2320 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 24,671 psi | 41% | 2139 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,327 psi | 82% | 2490 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 41,989 psi | 70% | 2405 fps | 95.3% |
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 104 powders for 7 x 64 Brenneke loaded with the .284 | 175gr | Speer TBBC. Alliant Reloder-26 delivers the highest muzzle velocity at 2,720 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,720 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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. Alliant Reloder-16, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for 7 x 64 Brenneke with the .284 | 175gr | Speer TBBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 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.