Load Specifications
Load data in caliber .303 British with .312 | 160gr | Peregrine Plainsmaster (VLR-4) bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Winchester 748 and Hodgdon BL-C2.
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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Max Load - Barrel Length: 25"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 94% | 47,543 psi | 90% | 2575 fps | 100% |
| Accurate 2460 | <<locked>> | 90% | 46,079 psi | 87% | 2582 fps | 99.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 45,121 psi | 85% | 2608 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 47,863 psi | 90% | 2661 fps | 99.2% |
| Accurate 4064ᴾ | <<locked>> | 100% | 41,901 psi | 79% | 2582 fps | 99.2% |
| Accurate LT-30 | <<locked>> | 86% | 47,630 psi | 90% | 2500 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 84% | 45,237 psi | 85% | 2467 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 96% | 46,818 psi | 88% | 2625 fps | 96.4% |
| ADI AR 2207 | <<locked>> | 84% | 47,776 psi | 90% | 2533 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 45,832 psi | 87% | 2598 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 94% | 47,007 psi | 89% | 2598 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 96% | 47,398 psi | 90% | 2648 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 47,311 psi | 89% | 2687 fps | 97.4% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 42,496 psi | 80% | 2579 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 88% | 45,397 psi | 86% | 2552 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 46,789 psi | 88% | 2644 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 82% | 45,948 psi | 87% | 2500 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 46,166 psi | 87% | 2500 fps | 99.9% |
| Bofors RP3ᴾ | <<locked>> | 100% | 41,901 psi | 79% | 2582 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 92% | 46,862 psi | 89% | 2552 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 96% | 47,311 psi | 89% | 2664 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 90% | 47,297 psi | 89% | 2621 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 88% | 45,165 psi | 85% | 2592 fps | 99.3% |
| Hodgdon H4198 | <<locked>> | 82% | 46,644 psi | 88% | 2500 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 96% | 47,021 psi | 89% | 2638 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 45,150 psi | 85% | 2648 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,866 psi | 62% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 46,079 psi | 87% | 2595 fps | 96.7% |
| IMR 3031 | <<locked>> | 96% | 45,121 psi | 85% | 2648 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 47,398 psi | 90% | 2602 fps | 95.9% |
| IMR 4198 | <<locked>> | 88% | 46,891 psi | 89% | 2526 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 47,790 psi | 90% | 2677 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 94% | 47,007 psi | 89% | 2598 fps | 97.7% |
| Lovex D073.4 | <<locked>> | 84% | 46,557 psi | 88% | 2595 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 90% | 46,093 psi | 87% | 2585 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 98% | 47,514 psi | 90% | 2657 fps | 99.2% |
| Lovex S060 | <<locked>> | 94% | 45,919 psi | 87% | 2530 fps | 96.1% |
| Lovex S062ᴾ | <<locked>> | 100% | 45,963 psi | 87% | 2602 fps | 97.7% |
| Norma 200 | <<locked>> | 84% | 45,092 psi | 85% | 2530 fps | 100% |
| Norma 201 | <<locked>> | 96% | 45,440 psi | 86% | 2575 fps | 97.5% |
| Norma 202 | <<locked>> | 96% | 45,759 psi | 86% | 2602 fps | 99.4% |
| Norma 203Bᴾ | <<locked>> | 100% | 45,803 psi | 87% | 2635 fps | 96.3% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 46,659 psi | 88% | 2651 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 94% | 45,788 psi | 86% | 2612 fps | 96.1% |
| Ramshot X-Terminator | <<locked>> | 90% | 45,818 psi | 87% | 2552 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,547 psi | 61% | 1614 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 46,905 psi | 89% | 2595 fps | 98.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 41,089 psi | 78% | 2612 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 94% | 46,731 psi | 88% | 2585 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 98% | 45,803 psi | 87% | 2575 fps | 97.5% |
| Shooters World AR Plus | <<locked>> | 84% | 46,557 psi | 88% | 2595 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 98% | 47,514 psi | 90% | 2657 fps | 99.2% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 45,963 psi | 87% | 2602 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 47,471 psi | 90% | 2566 fps | 97.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 46,963 psi | 89% | 2280 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 46,224 psi | 87% | 2602 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 46,557 psi | 88% | 2569 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 45,498 psi | 86% | 2598 fps | 96% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 45,934 psi | 87% | 2513 fps | 99.3% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 44,469 psi | 84% | 2503 fps | 99.6% |
| Somchem S321 | <<locked>> | 92% | 47,500 psi | 90% | 2631 fps | 98.1% |
| Somchem S335 | <<locked>> | 96% | 47,181 psi | 89% | 2552 fps | 99.8% |
| Somchem S341 | <<locked>> | 96% | 47,282 psi | 89% | 2612 fps | 96.3% |
| Vihtavuori N120 | <<locked>> | 84% | 47,906 psi | 90% | 2490 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 46,050 psi | 87% | 2510 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 45,469 psi | 86% | 2513 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 46,441 psi | 88% | 2612 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 45,919 psi | 87% | 2579 fps | 99.5% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 39,131 psi | 74% | 2477 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 94% | 47,210 psi | 89% | 2595 fps | 97.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 47,485 psi | 90% | 2621 fps | 99.4% |
| Winchester 748 | <<locked>> | 94% | 45,498 psi | 86% | 2635 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 98% | 47,732 psi | 90% | 2654 fps | 97.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 30,429 psi | 57% | 2260 fps | 98.5% |
| Accurate 2460 | <<locked>> | 80% | 32,532 psi | 61% | 2329 fps | 96.3% |
| Accurate 2495 | <<locked>> | 80% | 22,727 psi | 43% | 2133 fps | 96% |
| Accurate 2520 | <<locked>> | 84% | 31,198 psi | 59% | 2349 fps | 95.4% |
| Accurate 4064 | <<locked>> | 88% | 28,181 psi | 53% | 2293 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 39,465 psi | 75% | 2365 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 80% | 39,842 psi | 75% | 2372 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 92% | 41,234 psi | 78% | 2526 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 42,163 psi | 80% | 2451 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 37,115 psi | 70% | 2441 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 36,463 psi | 69% | 2405 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 27,978 psi | 53% | 2280 fps | 99.6% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 38,580 psi | 73% | 2526 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 37,652 psi | 71% | 2484 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 35,346 psi | 67% | 2375 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 98% | 44,005 psi | 83% | 2598 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 43,236 psi | 82% | 2457 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,855 psi | 72% | 2359 fps | 99.1% |
| Bofors RP3 | <<locked>> | 98% | 38,957 psi | 74% | 2526 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 34,476 psi | 65% | 2316 fps | 95% |
| Hodgdon BL-C2 | 40 gr | 88% | 35,926 psi | 68% | 2457 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 34,055 psi | 64% | 2375 fps | 98% |
| Hodgdon H335 | <<locked>> | 80% | 34,127 psi | 64% | 2385 fps | 97.1% |
| Hodgdon H4198 | <<locked>> | 80% | 43,540 psi | 82% | 2451 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 90% | 39,030 psi | 74% | 2490 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 39,827 psi | 75% | 2549 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,105 psi | 46% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 40,567 psi | 77% | 2497 fps | 95.3% |
| IMR 3031 | 33 gr | 80% | 26,832 psi | 51% | 2254 fps | 96.3% |
| IMR 4064 | <<locked>> | 98% | 44,643 psi | 84% | 2556 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 37,057 psi | 70% | 2365 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 42,032 psi | 79% | 2579 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 86% | 36,463 psi | 69% | 2405 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 40,393 psi | 76% | 2490 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 82% | 34,693 psi | 66% | 2375 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 86% | 31,198 psi | 59% | 2349 fps | 95.4% |
| Lovex S060 | <<locked>> | 92% | 43,279 psi | 82% | 2484 fps | 95.4% |
| Lovex S062 | <<locked>> | 92% | 35,781 psi | 68% | 2411 fps | 95% |
| Norma 200 | <<locked>> | 80% | 39,885 psi | 75% | 2444 fps | 100% |
| Norma 201 | <<locked>> | 90% | 37,608 psi | 71% | 2431 fps | 95.5% |
| Norma 202 | <<locked>> | 82% | 29,008 psi | 55% | 2264 fps | 95.3% |
| Norma 203B | <<locked>> | 98% | 43,091 psi | 81% | 2585 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 98% | 43,700 psi | 83% | 2602 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 92% | 42,801 psi | 81% | 2562 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 88% | 42,612 psi | 80% | 2497 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,975 psi | 45% | 1444 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 33,852 psi | 64% | 2349 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 35,998 psi | 68% | 2493 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 30,414 psi | 57% | 2260 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 92% | 37,884 psi | 72% | 2431 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 40,393 psi | 76% | 2490 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 31,198 psi | 59% | 2349 fps | 95.4% |
| Shooters World Precision | <<locked>> | 92% | 35,781 psi | 68% | 2411 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 38,363 psi | 72% | 2405 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 44,483 psi | 84% | 2244 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 37,521 psi | 71% | 2444 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,114 psi | 68% | 2385 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 42,583 psi | 80% | 2546 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 29,660 psi | 56% | 2195 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 27,064 psi | 51% | 2152 fps | 95.5% |
| Somchem S321 | <<locked>> | 84% | 35,969 psi | 68% | 2421 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 28,848 psi | 54% | 2198 fps | 96.1% |
| Somchem S341 | <<locked>> | 94% | 44,193 psi | 83% | 2559 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 42,279 psi | 80% | 2408 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 33,910 psi | 64% | 2297 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 29,457 psi | 56% | 2211 fps | 98% |
| Vihtavuori N135 | <<locked>> | 80% | 24,439 psi | 46% | 2159 fps | 96.5% |
| Vihtavuori N140 | <<locked>> | 84% | 29,283 psi | 55% | 2251 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 98% | 36,506 psi | 69% | 2425 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 86% | 36,274 psi | 69% | 2398 fps | 95% |
| Vihtavuori N540 | <<locked>> | 86% | 30,052 psi | 57% | 2287 fps | 95.4% |
| Winchester 748 | 38.4 gr | 86% | 34,722 psi | 66% | 2425 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 94% | 41,713 psi | 79% | 2549 fps | 95.8% |
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 73 powders for .303 British loaded with the .312 | 160gr | Peregrine Plainsmaster (VLR-4). Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,687 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,687 fps. Accurate 2495 gives the best case fill at 100 %, and 73 of the 73 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.312" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, 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. IMR 3031, Winchester 748, Hodgdon BL-C2 rank at the top here: for .303 British with the .312 | 160gr | 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.