Load Specifications
Load data in caliber 9.3 RSM with .366 | 270gr | Rhino Penetrator 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 Power Pro 2000-MR, ReloadSwiss RS 52 and Hodgdon CFE223.
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>> | 92% | 54,897 psi | 86% | 2418 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 55,825 psi | 87% | 2507 fps | 99% |
| Accurate 2230 | <<locked>> | 84% | 56,507 psi | 89% | 2516 fps | 99.3% |
| Accurate 2460 | <<locked>> | 90% | 57,174 psi | 90% | 2487 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 54,723 psi | 86% | 2470 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 54,549 psi | 85% | 2493 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 54,172 psi | 85% | 2503 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 55,869 psi | 88% | 2375 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 56,304 psi | 88% | 2395 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 57,246 psi | 90% | 2539 fps | 99.6% |
| ADI AR 2207 | <<locked>> | 84% | 56,942 psi | 89% | 2388 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 2484 fps | 98.9% |
| ADI AR 2219 | <<locked>> | 86% | 55,724 psi | 87% | 2480 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 56,826 psi | 89% | 2503 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 94% | 55,825 psi | 87% | 2484 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 54,636 psi | 86% | 2549 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 56,782 psi | 89% | 2638 fps | 99.2% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,258 psi | 83% | 2503 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 88% | 55,143 psi | 86% | 2428 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 54,433 psi | 85% | 2523 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 41,321 psi | 65% | 2365 fps | 95.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,239 psi | 74% | 2503 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 82% | 54,650 psi | 86% | 2365 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 54,592 psi | 86% | 2375 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 56,826 psi | 89% | 2552 fps | 98.9% |
| Bofors RP3ᴾ | <<locked>> | 100% | 53,519 psi | 84% | 2520 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 55,898 psi | 88% | 2448 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 94% | 55,100 psi | 86% | 2530 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 92% | 57,145 psi | 90% | 2615 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 88% | 54,273 psi | 85% | 2464 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 55,245 psi | 87% | 2490 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 55,332 psi | 87% | 2523 fps | 98.2% |
| Hodgdon H4198 | <<locked>> | 82% | 54,389 psi | 85% | 2375 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 57,682 psi | 90% | 2549 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 37,550 psi | 59% | 2270 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 55,999 psi | 88% | 2575 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,142 psi | 54% | 1450 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 55,840 psi | 88% | 2507 fps | 99.7% |
| IMR 3031 | <<locked>> | 96% | 56,405 psi | 88% | 2536 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 57,464 psi | 90% | 2513 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 96% | 55,651 psi | 87% | 2457 fps | 95.9% |
| IMR 4198 | <<locked>> | 88% | 55,854 psi | 88% | 2392 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 55,709 psi | 87% | 2552 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 94% | 56,826 psi | 89% | 2503 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 84% | 57,116 psi | 90% | 2493 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 57,043 psi | 89% | 2497 fps | 100% |
| Lovex D073.6 | <<locked>> | 96% | 55,999 psi | 88% | 2523 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 54,534 psi | 85% | 2434 fps | 99.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 2516 fps | 100% |
| Norma 200 | <<locked>> | 84% | 55,274 psi | 87% | 2405 fps | 100% |
| Norma 201 | <<locked>> | 96% | 55,840 psi | 88% | 2490 fps | 99.9% |
| Norma 202 | <<locked>> | 96% | 56,014 psi | 88% | 2497 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 56,840 psi | 89% | 2556 fps | 99.6% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 57,609 psi | 90% | 2585 fps | 99.5% |
| Ramshot TAC | <<locked>> | 94% | 57,508 psi | 90% | 2516 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 94% | 56,318 psi | 88% | 2536 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 90% | 54,897 psi | 86% | 2464 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,374 psi | 54% | 1486 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 56,782 psi | 89% | 2493 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 56,521 psi | 89% | 2510 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 57,551 psi | 90% | 2628 fps | 99.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 50,502 psi | 79% | 2562 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 57,014 psi | 89% | 2477 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 56,188 psi | 88% | 2487 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,763 psi | 78% | 2461 fps | 99.3% |
| Shooters World AR Plus | <<locked>> | 84% | 57,116 psi | 90% | 2493 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 55,999 psi | 88% | 2523 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 56,739 psi | 89% | 2516 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 57,145 psi | 90% | 2467 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 56,492 psi | 89% | 2152 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 56,130 psi | 88% | 2493 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 51,793 psi | 81% | 2516 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 56,144 psi | 88% | 2441 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 55,201 psi | 87% | 2490 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 55,579 psi | 87% | 2516 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 55,361 psi | 87% | 2408 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,201 psi | 85% | 2398 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 54,505 psi | 85% | 2493 fps | 99.9% |
| Somchem S335 | <<locked>> | 96% | 57,145 psi | 90% | 2441 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 54,520 psi | 85% | 2487 fps | 99.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,691 psi | 79% | 2464 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,361 psi | 57% | 2313 fps | 97.8% |
| Vihtavuori N120 | <<locked>> | 84% | 56,811 psi | 89% | 2339 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 54,984 psi | 86% | 2379 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 55,027 psi | 86% | 2395 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 54,882 psi | 86% | 2461 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 56,739 psi | 89% | 2477 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,023 psi | 77% | 2408 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 43,163 psi | 68% | 2359 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 94% | 57,566 psi | 90% | 2503 fps | 100% |
| Vihtavuori N540 | <<locked>> | 98% | 54,679 psi | 86% | 2477 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 41,887 psi | 66% | 2362 fps | 95.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,730 psi | 70% | 2356 fps | 98.3% |
| Winchester 748 | <<locked>> | 94% | 56,028 psi | 88% | 2543 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 55,129 psi | 86% | 2526 fps | 99.7% |
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 2015 | <<locked>> | 80% | 37,971 psi | 60% | 2182 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 48,936 psi | 77% | 2408 fps | 98% |
| Accurate 2230 | <<locked>> | 80% | 49,255 psi | 77% | 2418 fps | 98.4% |
| Accurate 2460 | <<locked>> | 80% | 41,031 psi | 64% | 2267 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 30,487 psi | 48% | 2103 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 36,303 psi | 57% | 2221 fps | 98.9% |
| Accurate 4064 | <<locked>> | 80% | 28,848 psi | 45% | 2083 fps | 98% |
| Accurate LT-30 | <<locked>> | 80% | 46,441 psi | 73% | 2254 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,818 psi | 73% | 2270 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 34,766 psi | 54% | 2175 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 50,734 psi | 80% | 2316 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 37,971 psi | 60% | 2224 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 45,556 psi | 71% | 2349 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,724 psi | 58% | 2195 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 80% | 35,114 psi | 55% | 2201 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,090 psi | 66% | 2359 fps | 98.2% |
| Alliant Power Pro 2000-MR | 55.8 gr | 86% | 38,159 psi | 60% | 2323 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 30,240 psi | 47% | 2106 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,323 psi | 68% | 2270 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 35,143 psi | 55% | 2208 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 98% | 38,914 psi | 61% | 2320 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,200 psi | 54% | 2251 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 51,430 psi | 81% | 2326 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,034 psi | 71% | 2254 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 38,421 psi | 60% | 2267 fps | 95.3% |
| Bofors RP3 | <<locked>> | 84% | 31,430 psi | 49% | 2149 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,044 psi | 61% | 2195 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,432 psi | 54% | 2201 fps | 97.5% |
| Hodgdon CFE223 | 53.1 gr | 80% | 37,869 psi | 59% | 2306 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 41,814 psi | 66% | 2290 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,366 psi | 66% | 2310 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 92% | 42,786 psi | 67% | 2343 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 51,140 psi | 80% | 2333 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 34,954 psi | 55% | 2188 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 33,359 psi | 52% | 2182 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,154 psi | 49% | 2149 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,324 psi | 40% | 1296 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,881 psi | 53% | 2152 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 33,620 psi | 53% | 2198 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 35,317 psi | 55% | 2169 fps | 95.1% |
| IMR 4166 Enduron | <<locked>> | 94% | 52,112 psi | 82% | 2408 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 44,208 psi | 69% | 2241 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 33,750 psi | 53% | 2188 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 36,724 psi | 58% | 2195 fps | 97.4% |
| Lovex D073.4 | <<locked>> | 80% | 49,777 psi | 78% | 2402 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 40,712 psi | 64% | 2267 fps | 99% |
| Lovex D073.6 | <<locked>> | 80% | 32,677 psi | 51% | 2159 fps | 98.1% |
| Lovex S060 | <<locked>> | 80% | 35,955 psi | 56% | 2136 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 30,690 psi | 48% | 2083 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 48,820 psi | 77% | 2326 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,229 psi | 54% | 2146 fps | 96.8% |
| Norma 202 | <<locked>> | 80% | 33,968 psi | 53% | 2159 fps | 98.9% |
| Norma 203B | <<locked>> | 84% | 34,476 psi | 54% | 2198 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 86% | 36,332 psi | 57% | 2251 fps | 95.6% |
| Ramshot TAC | <<locked>> | 86% | 44,556 psi | 70% | 2329 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,534 psi | 56% | 2205 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,842 psi | 62% | 2234 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,454 psi | 40% | 1325 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,307 psi | 65% | 2274 fps | 99.4% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 49,530 psi | 78% | 2415 fps | 95.5% |
| ReloadSwiss RS 52 | 52.8 gr | 84% | 36,042 psi | 56% | 2283 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 28,326 psi | 44% | 2110 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 37,826 psi | 59% | 2195 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 32,576 psi | 51% | 2103 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 86% | 31,517 psi | 49% | 2146 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 49,777 psi | 78% | 2402 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,677 psi | 51% | 2159 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 30,690 psi | 48% | 2083 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,642 psi | 68% | 2283 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,010 psi | 80% | 2093 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,108 psi | 72% | 2359 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 35,476 psi | 56% | 2238 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,947 psi | 69% | 2283 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 42,163 psi | 66% | 2300 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 35,650 psi | 56% | 2198 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,056 psi | 56% | 2123 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,341 psi | 46% | 2008 fps | 98.5% |
| Somchem S321 | <<locked>> | 80% | 38,986 psi | 61% | 2260 fps | 98.3% |
| Somchem S335 | <<locked>> | 80% | 35,447 psi | 56% | 2126 fps | 99.5% |
| Somchem S341 | <<locked>> | 80% | 34,069 psi | 53% | 2159 fps | 95% |
| Somchem S355 | <<locked>> | 86% | 32,953 psi | 52% | 2159 fps | 95.5% |
| Somchem S365 | <<locked>> | 94% | 30,298 psi | 47% | 2172 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 50,691 psi | 79% | 2270 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,944 psi | 64% | 2192 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,027 psi | 56% | 2126 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,125 psi | 49% | 2103 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 32,126 psi | 50% | 2106 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 84% | 29,298 psi | 46% | 2060 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 98% | 40,611 psi | 64% | 2316 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 36,608 psi | 57% | 2188 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 80% | 30,864 psi | 48% | 2093 fps | 97.9% |
| Vihtavuori N550 | <<locked>> | 98% | 39,407 psi | 62% | 2320 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 34,476 psi | 54% | 2169 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 35,201 psi | 55% | 2221 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,430 psi | 51% | 2149 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 95 powders for 9.3 RSM loaded with the .366 | 270gr | Rhino Penetrator. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,638 fps; across all powders the maximum-charge window runs from 1,450 fps to 2,638 fps. Accurate 4064 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 (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.366" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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 Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for 9.3 RSM with the .366 | 270gr | Rhino Penetrator 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.