Load Specifications
Load data in caliber .375 Hoelderlin with .376 | 300gr | Peregrine Brass Backup (VRG-1) bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and ReloadSwiss RS 52.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 47,398 psi | 86% | 2267 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 48,646 psi | 88% | 2326 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 46,673 psi | 85% | 2313 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 47,964 psi | 87% | 2362 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 47,964 psi | 87% | 2362 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 49,763 psi | 90% | 2392 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,119 psi | 76% | 2349 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 90% | 49,443 psi | 90% | 2382 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 94% | 47,442 psi | 86% | 2336 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 88% | 48,936 psi | 89% | 2346 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 88% | 48,167 psi | 87% | 2329 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 46,891 psi | 85% | 2385 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 48,530 psi | 88% | 2470 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 49,153 psi | 89% | 2395 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 82% | 47,645 psi | 86% | 2274 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 47,123 psi | 86% | 2372 fps | 99% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,062 psi | 78% | 2359 fps | 97.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,501 psi | 90% | 2493 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 49,864 psi | 90% | 2260 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 48,936 psi | 89% | 2395 fps | 98.8% |
| Bofors RP3 | <<locked>> | 96% | 49,081 psi | 89% | 2408 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 48,283 psi | 88% | 2293 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 47,181 psi | 86% | 2369 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 48,747 psi | 88% | 2448 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 86% | 49,037 psi | 89% | 2339 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 47,718 psi | 87% | 2372 fps | 98% |
| Hodgdon H414 | <<locked>> | 98% | 47,877 psi | 87% | 2421 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 90% | 49,835 psi | 90% | 2392 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,189 psi | 71% | 2260 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 48,138 psi | 87% | 2418 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,272 psi | 62% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 47,253 psi | 86% | 2339 fps | 99.5% |
| IMR 3031 | <<locked>> | 92% | 47,340 psi | 86% | 2362 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 48,921 psi | 89% | 2352 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 96% | 49,298 psi | 89% | 2323 fps | 96% |
| IMR 4198 | <<locked>> | 82% | 48,472 psi | 88% | 2238 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 49,864 psi | 90% | 2362 fps | 96% |
| IMR 4831ᴾ | <<locked>> | 100% | 36,129 psi | 66% | 2224 fps | 96% |
| IMR 4895 | <<locked>> | 92% | 48,254 psi | 88% | 2398 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 88% | 48,936 psi | 89% | 2346 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 84% | 48,428 psi | 88% | 2333 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 47,964 psi | 87% | 2362 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 47,239 psi | 86% | 2283 fps | 99.2% |
| Lovex S062 | <<locked>> | 94% | 49,023 psi | 89% | 2362 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 48,066 psi | 87% | 2349 fps | 97.3% |
| Norma 201 | <<locked>> | 90% | 48,240 psi | 88% | 2339 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 48,617 psi | 88% | 2346 fps | 100% |
| Norma 203B | <<locked>> | 94% | 49,400 psi | 90% | 2405 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 42,859 psi | 78% | 2349 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 94% | 49,574 psi | 90% | 2428 fps | 99.4% |
| Ramshot TAC | <<locked>> | 88% | 49,327 psi | 90% | 2356 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 48,341 psi | 88% | 2375 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 47,036 psi | 85% | 2303 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,461 psi | 63% | 1450 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 48,675 psi | 88% | 2333 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 48,617 psi | 88% | 2356 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 49,632 psi | 90% | 2467 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 49,371 psi | 90% | 2497 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,221 psi | 77% | 2369 fps | 97.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 43,816 psi | 80% | 2385 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 88% | 49,168 psi | 89% | 2323 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 48,573 psi | 88% | 2336 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 98% | 48,718 psi | 88% | 2395 fps | 99.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 48,066 psi | 87% | 2349 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 47,964 psi | 87% | 2362 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 49,023 psi | 89% | 2362 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 48,414 psi | 88% | 2303 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 47,674 psi | 87% | 2408 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 48,573 psi | 88% | 2290 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 46,934 psi | 85% | 2329 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 47,964 psi | 87% | 2359 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 47,645 psi | 86% | 2254 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 46,978 psi | 85% | 2254 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 48,095 psi | 87% | 2310 fps | 95.8% |
| Somchem S321 | <<locked>> | 86% | 49,617 psi | 90% | 2375 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 49,632 psi | 90% | 2293 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 46,673 psi | 85% | 2329 fps | 99.1% |
| Somchem S355 | <<locked>> | 98% | 49,661 psi | 90% | 2395 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,855 psi | 69% | 2303 fps | 99.2% |
| Unknown powderᴾ | <<locked>> | 100% | 47,311 psi | 86% | 2405 fps | 97.8% |
| Vihtavuori N130 | <<locked>> | 84% | 47,732 psi | 87% | 2231 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 47,659 psi | 86% | 2247 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 47,514 psi | 86% | 2310 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 48,892 psi | 89% | 2326 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 47,964 psi | 87% | 2339 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,295 psi | 82% | 2349 fps | 97.9% |
| Vihtavuori N530 | <<locked>> | 88% | 49,211 psi | 89% | 2343 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 47,239 psi | 86% | 2326 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,150 psi | 80% | 2356 fps | 97.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,514 psi | 84% | 2343 fps | 99.5% |
| Winchester 748 | <<locked>> | 86% | 48,776 psi | 89% | 2392 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 47,877 psi | 87% | 2421 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 48,559 psi | 88% | 2385 fps | 99.7% |
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% | 39,131 psi | 71% | 2149 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 42,409 psi | 77% | 2238 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 31,328 psi | 57% | 2073 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 36,172 psi | 66% | 2182 fps | 99.5% |
| Accurate 2520 | <<locked>> | 80% | 36,172 psi | 66% | 2182 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 29,660 psi | 54% | 2060 fps | 99.1% |
| Accurate 4350 | <<locked>> | 94% | 34,055 psi | 62% | 2208 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 36,085 psi | 65% | 2162 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 32,735 psi | 59% | 2077 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,159 psi | 69% | 2175 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 36,738 psi | 67% | 2172 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,034 psi | 80% | 2339 fps | 99.3% |
| Alliant Power Pro 2000-MR | 55.5 gr | 82% | 34,606 psi | 63% | 2211 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,399 psi | 53% | 2047 fps | 96.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,759 psi | 81% | 2234 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 32,039 psi | 58% | 2100 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 94% | 35,897 psi | 65% | 2221 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 86% | 31,038 psi | 56% | 2146 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,688 psi | 85% | 2221 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 34,853 psi | 63% | 2156 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 28,456 psi | 52% | 2044 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,277 psi | 73% | 2172 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,853 psi | 65% | 2185 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,436 psi | 72% | 2293 fps | 97.6% |
| Hodgdon H322 | <<locked>> | 80% | 40,393 psi | 73% | 2215 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 36,550 psi | 66% | 2185 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 96% | 44,643 psi | 81% | 2372 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 36,318 psi | 66% | 2172 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 30,560 psi | 55% | 2087 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 30,501 psi | 55% | 2096 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,324 psi | 46% | 1263 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 32,460 psi | 59% | 2080 fps | 96.6% |
| IMR 3031 | <<locked>> | 80% | 31,981 psi | 58% | 2116 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 31,879 psi | 58% | 2054 fps | 95.2% |
| IMR 4166 Enduron | <<locked>> | 94% | 46,514 psi | 84% | 2280 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 45,803 psi | 83% | 2205 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 46,804 psi | 85% | 2316 fps | 95.3% |
| IMR 4831 | <<locked>> | 98% | 33,968 psi | 62% | 2182 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 32,750 psi | 59% | 2126 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 38,159 psi | 69% | 2175 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 42,235 psi | 77% | 2244 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 33,953 psi | 62% | 2142 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 37,115 psi | 67% | 2116 fps | 97.4% |
| Lovex S062 | <<locked>> | 80% | 31,676 psi | 57% | 2067 fps | 97.3% |
| Lovex S065 | <<locked>> | 94% | 40,059 psi | 73% | 2224 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 35,273 psi | 64% | 2126 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 35,186 psi | 64% | 2136 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 31,430 psi | 57% | 2093 fps | 95.8% |
| Norma URP | <<locked>> | 94% | 35,346 psi | 64% | 2211 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 30,951 psi | 56% | 2096 fps | 95.1% |
| Ramshot TAC | <<locked>> | 82% | 40,495 psi | 73% | 2218 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,782 psi | 67% | 2185 fps | 97.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,307 psi | 75% | 2215 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,614 psi | 46% | 1296 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,931 psi | 78% | 2251 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 42,554 psi | 77% | 2264 fps | 95.1% |
| ReloadSwiss RS 52 | 52.5 gr | 80% | 32,837 psi | 60% | 2172 fps | 95.6% |
| ReloadSwiss RS 60 | 53.3 gr | 80% | 27,282 psi | 50% | 2057 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 36,796 psi | 67% | 2270 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 41,060 psi | 75% | 2336 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 38,696 psi | 70% | 2165 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 33,373 psi | 61% | 2080 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 28,703 psi | 52% | 2041 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 40,059 psi | 73% | 2224 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,953 psi | 62% | 2142 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 31,676 psi | 57% | 2067 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,324 psi | 82% | 2260 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 32,242 psi | 59% | 2133 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,614 psi | 83% | 2247 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 38,116 psi | 69% | 2185 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,577 psi | 63% | 2133 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,130 psi | 67% | 2096 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,284 psi | 55% | 1985 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 44,817 psi | 81% | 2264 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 40,524 psi | 74% | 2238 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 36,550 psi | 66% | 2103 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 35,389 psi | 64% | 2142 fps | 96.9% |
| Somchem S355 | <<locked>> | 82% | 29,950 psi | 54% | 2051 fps | 95.7% |
| Somchem S365 | <<locked>> | 90% | 27,630 psi | 50% | 2073 fps | 95.9% |
| Unknown powder | <<locked>> | 94% | 39,044 psi | 71% | 2267 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 42,264 psi | 77% | 2159 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,246 psi | 68% | 2100 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,300 psi | 59% | 2077 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,301 psi | 60% | 2083 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 26,585 psi | 48% | 1959 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 92% | 34,969 psi | 63% | 2172 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 37,840 psi | 69% | 2169 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 31,966 psi | 58% | 2073 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 94% | 36,289 psi | 66% | 2218 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 31,314 psi | 57% | 2067 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 39,508 psi | 72% | 2254 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 44,643 psi | 81% | 2372 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,989 psi | 76% | 2287 fps | 99% |
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 93 powders for .375 Hoelderlin loaded with the .376 | 300gr | Peregrine Brass Backup (VRG-1). ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,497 fps; across all powders the maximum-charge window runs from 1,417 fps to 2,497 fps. Accurate 4350 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.376" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .375 Hoelderlin with the .376 | 300gr | Peregrine Brass Backup (VRG-1) 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.