Load Specifications
Load data in caliber 8 x 65 R with .323 | 200gr | Peregrine Plainsmaster (VLR-4) 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 60 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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 51,169 psi | 90% | 2470 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 49,240 psi | 87% | 2490 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 48,312 psi | 85% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 51,010 psi | 90% | 2549 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 48,283 psi | 85% | 2526 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,311 psi | 84% | 2585 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 88% | 50,212 psi | 89% | 2556 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 92% | 48,225 psi | 85% | 2510 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 86% | 49,777 psi | 88% | 2516 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 49,443 psi | 87% | 2497 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 51,111 psi | 90% | 2612 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 49,487 psi | 87% | 2657 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 50,575 psi | 89% | 2575 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 51,082 psi | 90% | 2474 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 48,182 psi | 85% | 2546 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,978 psi | 83% | 2595 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 98% | 50,705 psi | 90% | 2680 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,837 psi | 58% | 2339 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 49,922 psi | 88% | 2572 fps | 99.1% |
| Bofors RP3 | <<locked>> | 94% | 50,459 psi | 89% | 2585 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 48,385 psi | 86% | 2503 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 48,878 psi | 86% | 2464 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 48,037 psi | 85% | 2539 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 49,734 psi | 88% | 2625 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 82% | 50,140 psi | 89% | 2513 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 50,952 psi | 90% | 2536 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 48,747 psi | 86% | 2549 fps | 98.5% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 50,821 psi | 90% | 2635 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 88% | 50,647 psi | 90% | 2566 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,873 psi | 76% | 2480 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 49,385 psi | 87% | 2595 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,606 psi | 61% | 1539 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 49,023 psi | 87% | 2526 fps | 99.8% |
| IMR 3031 | <<locked>> | 88% | 50,183 psi | 89% | 2556 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 50,749 psi | 90% | 2539 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 48,298 psi | 85% | 2474 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 96% | 50,778 psi | 90% | 2543 fps | 96.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,049 psi | 80% | 2533 fps | 98.5% |
| IMR 4895 | <<locked>> | 90% | 49,371 psi | 87% | 2575 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 86% | 49,777 psi | 88% | 2516 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 49,124 psi | 87% | 2500 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 49,269 psi | 87% | 2539 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 50,734 psi | 90% | 2497 fps | 99.7% |
| Lovex S062 | <<locked>> | 92% | 50,125 psi | 89% | 2536 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 49,313 psi | 87% | 2533 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,777 psi | 88% | 2559 fps | 96.9% |
| Norma 201 | <<locked>> | 88% | 48,921 psi | 86% | 2507 fps | 100% |
| Norma 202 | <<locked>> | 88% | 49,559 psi | 88% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 92% | 50,647 psi | 90% | 2585 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 47,224 psi | 83% | 2579 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 92% | 50,676 psi | 90% | 2605 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,528 psi | 82% | 2572 fps | 97% |
| Ramshot TAC | <<locked>> | 86% | 49,835 psi | 88% | 2530 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 49,124 psi | 87% | 2546 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 84% | 50,647 psi | 90% | 2516 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,041 psi | 62% | 1578 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 49,211 psi | 87% | 2500 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 49,501 psi | 88% | 2533 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 51,010 psi | 90% | 2651 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 50,691 psi | 90% | 2684 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,007 psi | 83% | 2605 fps | 98.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,080 psi | 85% | 2628 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 86% | 50,009 psi | 88% | 2493 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 49,472 psi | 87% | 2507 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 50,328 psi | 89% | 2575 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 48,385 psi | 86% | 2503 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 49,313 psi | 87% | 2533 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 49,269 psi | 87% | 2539 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 50,125 psi | 89% | 2536 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,777 psi | 88% | 2559 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 48,979 psi | 87% | 2589 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 51,184 psi | 90% | 2552 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 48,892 psi | 86% | 2533 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 51,140 psi | 90% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 50,894 psi | 90% | 2457 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 49,429 psi | 87% | 2487 fps | 96.5% |
| Somchem S321 | <<locked>> | 84% | 50,459 psi | 89% | 2546 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 50,183 psi | 89% | 2457 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 50,966 psi | 90% | 2552 fps | 99.7% |
| Somchem S355 | <<locked>> | 94% | 47,950 psi | 85% | 2530 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,974 psi | 74% | 2533 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 51,082 psi | 90% | 2428 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 48,196 psi | 85% | 2408 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 48,689 psi | 86% | 2477 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 50,038 psi | 88% | 2497 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 49,269 psi | 87% | 2516 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,922 psi | 88% | 2579 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 50,082 psi | 89% | 2516 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 48,066 psi | 85% | 2493 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,689 psi | 86% | 2582 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,737 psi | 61% | 2405 fps | 96.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,937 psi | 90% | 2569 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 49,255 psi | 87% | 2559 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 51,155 psi | 90% | 2638 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 48,356 psi | 85% | 2539 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 42,453 psi | 75% | 2346 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,006 psi | 81% | 2444 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,461 psi | 61% | 2267 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,263 psi | 73% | 2405 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,634 psi | 58% | 2257 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 33,069 psi | 58% | 2326 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 38,914 psi | 69% | 2365 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 33,228 psi | 59% | 2231 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,031 psi | 73% | 2375 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 40,509 psi | 72% | 2372 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,674 psi | 84% | 2556 fps | 99.8% |
| Alliant Power Pro 2000-MR | 44.9 gr | 80% | 35,201 psi | 62% | 2379 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,169 psi | 57% | 2244 fps | 97.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,298 psi | 85% | 2434 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,795 psi | 62% | 2300 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 90% | 34,592 psi | 61% | 2346 fps | 95.6% |
| Alliant Reloder-17 | 45.3 gr | 82% | 29,704 psi | 53% | 2257 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,922 psi | 55% | 2290 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,855 psi | 67% | 2365 fps | 96.9% |
| Bofors RP3 | <<locked>> | 80% | 31,444 psi | 56% | 2244 fps | 97.2% |
| Bofors RP7 | <<locked>> | 94% | 45,556 psi | 81% | 2457 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,134 psi | 76% | 2372 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,233 psi | 69% | 2395 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,134 psi | 76% | 2516 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 47,079 psi | 83% | 2470 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,659 psi | 84% | 2490 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 34,838 psi | 62% | 2297 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 96% | 44,672 psi | 79% | 2536 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 39,233 psi | 69% | 2375 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 29,341 psi | 52% | 2198 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,157 psi | 62% | 2346 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,730 psi | 45% | 1375 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,913 psi | 67% | 2336 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 38,392 psi | 68% | 2375 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,824 psi | 62% | 2260 fps | 96.6% |
| IMR 4166 Enduron | <<locked>> | 86% | 45,252 psi | 80% | 2421 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 44,860 psi | 79% | 2448 fps | 95.3% |
| IMR 4831 | <<locked>> | 90% | 32,430 psi | 57% | 2290 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 35,607 psi | 63% | 2329 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 80% | 41,031 psi | 73% | 2375 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 45,876 psi | 81% | 2451 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 37,275 psi | 66% | 2346 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 39,740 psi | 70% | 2316 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 34,447 psi | 61% | 2264 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 38,522 psi | 68% | 2346 fps | 95.3% |
| Lovex S070 | <<locked>> | 96% | 43,801 psi | 77% | 2461 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 38,058 psi | 67% | 2323 fps | 99% |
| Norma 202 | <<locked>> | 80% | 38,203 psi | 68% | 2336 fps | 100% |
| Norma 203B | <<locked>> | 80% | 34,142 psi | 60% | 2290 fps | 97% |
| Norma URP | <<locked>> | 90% | 34,156 psi | 60% | 2333 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 33,721 psi | 60% | 2303 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 96% | 40,799 psi | 72% | 2470 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 40,857 psi | 72% | 2375 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,074 psi | 71% | 2395 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,570 psi | 79% | 2421 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,005 psi | 46% | 1411 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,325 psi | 82% | 2457 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 40,596 psi | 72% | 2382 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,027 psi | 64% | 2388 fps | 97% |
| ReloadSwiss RS 60 | 44.2 gr | 80% | 29,689 psi | 52% | 2267 fps | 98% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 35,752 psi | 63% | 2398 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 39,117 psi | 69% | 2461 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 41,684 psi | 74% | 2365 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,172 psi | 64% | 2280 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 29,559 psi | 52% | 2195 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 94% | 45,556 psi | 81% | 2457 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 90% | 38,522 psi | 68% | 2346 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,275 psi | 66% | 2346 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 34,447 psi | 61% | 2264 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 96% | 43,801 psi | 77% | 2461 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,850 psi | 55% | 2238 fps | 95.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,798 psi | 69% | 2349 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,536 psi | 66% | 2339 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,784 psi | 70% | 2290 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,648 psi | 58% | 2169 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 43,163 psi | 76% | 2388 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 43,961 psi | 78% | 2448 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 39,262 psi | 69% | 2293 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,537 psi | 68% | 2349 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 30,647 psi | 54% | 2201 fps | 96.3% |
| Somchem S365 | <<locked>> | 86% | 26,585 psi | 47% | 2182 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 45,179 psi | 80% | 2349 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,016 psi | 71% | 2287 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,215 psi | 62% | 2270 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,260 psi | 64% | 2280 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 29,138 psi | 52% | 2152 fps | 97.2% |
| Vihtavuori N160 | <<locked>> | 88% | 33,504 psi | 59% | 2287 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 41,002 psi | 72% | 2372 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 34,621 psi | 61% | 2267 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 34,940 psi | 62% | 2336 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 98% | 32,619 psi | 58% | 2359 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 29,820 psi | 53% | 2172 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 40,089 psi | 71% | 2411 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 44,672 psi | 79% | 2536 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,680 psi | 65% | 2339 fps | 98.2% |
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 8 x 65 R loaded with the .323 | 200gr | Peregrine Plainsmaster (VLR-4). ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,684 fps; across all powders the maximum-charge window runs from 1,539 fps to 2,684 fps. Accurate 4350 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 (390 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.323" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 60, Alliant Reloder-17 rank at the top here: for 8 x 65 R with the .323 | 200gr | Peregrine Plainsmaster (VLR-4) 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.