Load data for .30 R Blaser + .308 | 165gr | Geco STAR

.30 R Blaser cartridge drawing
Geco logo

Load Specifications

Bullet Manufacturer:Geco
Bullet Weight:165 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.677"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:75 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:58,740 psi
Recommended Twist Rate:1:13.0

Load data in caliber .30 R Blaser with .308 | 165gr | Geco STAR bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, 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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Max Load - Barrel Length: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>82%51,619 psi88%2657 fps100%
Accurate 2495<<locked>>86%49,690 psi85%2667 fps100%
Accurate 2520<<locked>>82%51,721 psi88%2733 fps100%
Accurate 2700<<locked>>88%52,808 psi90%2713 fps96.5%
Accurate 4064<<locked>>88%50,125 psi85%2717 fps100%
Accurate 4350<<locked>>96%49,908 psi85%2785 fps99.1%
ADI AR 2206H<<locked>>84%50,691 psi86%2743 fps99.7%
ADI AR 2208<<locked>>90%51,880 psi88%2746 fps99.5%
ADI Benchmark 8208<<locked>>84%53,069 psi90%2749 fps100%
Alliant AR-Comp<<locked>>82%50,401 psi86%2684 fps100%
Alliant Power Pro 2000-MR<<locked>>86%50,270 psi86%2851 fps99.5%
Alliant Reloder- TS 15.5<<locked>>90%51,909 psi88%2769 fps100%
Alliant Reloder-15<<locked>>88%52,475 psi89%2789 fps99.7%
Alliant Reloder-16<<locked>>98%51,561 psi88%2848 fps99.5%
Alliant Reloder-17<<locked>>94%52,678 psi90%2884 fps100%
Alliant Reloder-23ᴾ<<locked>>100%39,044 psi66%2631 fps98.6%
Alliant Reloder-26ᴾ<<locked>>100%43,961 psi75%2792 fps98%
Baschieri & Pellagri 107<<locked>>84%50,415 psi86%2753 fps99.2%
Bofors RP3<<locked>>90%52,127 psi89%2779 fps100%
Bofors RP7<<locked>>94%52,475 psi89%2749 fps96.7%
Hodgdon Benchmark<<locked>>82%51,561 psi88%2687 fps100%
Hodgdon BL-C2<<locked>>84%52,533 psi89%2776 fps100%
Hodgdon H380<<locked>>88%49,647 psi85%2736 fps98.6%
Hodgdon H414<<locked>>96%52,910 psi90%2838 fps97.5%
Hodgdon H4895<<locked>>84%51,184 psi87%2756 fps99.9%
Hodgdon Hybrid 100Vᴾ<<locked>>100%51,097 psi87%2776 fps99.9%
Hodgdon LEVERevolution<<locked>>86%50,720 psi86%2785 fps100%
Hodgdon Superformance<<locked>>94%49,864 psi85%2808 fps96.4%
Hodgdon TrailBossᴾ<<locked>>100%35,259 psi60%1729 fps100%
Hodgdon VARGET<<locked>>86%52,533 psi89%2759 fps99.9%
IMR 3031<<locked>>84%51,256 psi87%2746 fps100%
IMR 4064<<locked>>88%51,343 psi87%2730 fps99.6%
IMR 4166 Enduron<<locked>>86%51,329 psi87%2707 fps97%
IMR 4350<<locked>>98%53,026 psi90%2776 fps96.9%
IMR 4451 Enduron<<locked>>92%51,387 psi87%2733 fps97%
IMR 4831<<locked>>98%50,633 psi86%2782 fps99.2%
IMR 4895<<locked>>86%50,357 psi86%2766 fps99.7%
IMR 8208 XBR<<locked>>84%53,069 psi90%2749 fps100%
Lovex D073.6<<locked>>84%50,082 psi85%2720 fps100%
Lovex S060<<locked>>84%50,546 psi86%2680 fps99.7%
Lovex S062<<locked>>88%51,242 psi87%2730 fps100%
Lovex S065<<locked>>94%50,415 psi86%2723 fps98.1%
Lovex S070<<locked>>96%51,314 psi87%2756 fps97.3%
Norma 201<<locked>>86%52,663 psi90%2740 fps100%
Norma 202<<locked>>84%50,125 psi85%2700 fps100%
Norma 203B<<locked>>88%51,692 psi88%2776 fps99.8%
Norma URP<<locked>>98%52,924 psi90%2831 fps99.4%
Ramshot Big Game<<locked>>88%51,982 psi88%2795 fps99.8%
Ramshot Hunter<<locked>>98%51,619 psi88%2822 fps98.1%
Ramshot TAC<<locked>>82%49,995 psi85%2710 fps98.2%
Ramshot Wild Boar<<locked>>84%52,953 psi90%2779 fps99.8%
ReloadSwiss RS 14ᴾ<<locked>>100%35,665 psi61%1768 fps100%
ReloadSwiss RS 50<<locked>>88%50,285 psi86%2720 fps97.4%
ReloadSwiss RS 52<<locked>>86%52,837 psi90%2851 fps99.7%
ReloadSwiss RS 60<<locked>>92%52,460 psi89%2884 fps100%
ReloadSwiss RS 62<<locked>>96%49,603 psi84%2802 fps98.9%
ReloadSwiss RS 70<<locked>>98%53,127 psi90%2887 fps99.2%
Rottweil R 901<<locked>>82%50,270 psi86%2677 fps100%
Rottweil R 902<<locked>>86%50,140 psi85%2694 fps100%
Rottweil R 903<<locked>>92%51,996 psi89%2769 fps100%
Rottweil R 907<<locked>>94%52,475 psi89%2749 fps96.7%
Shooters World Long Rifle<<locked>>94%50,415 psi86%2723 fps98.1%
Shooters World Match Rifle<<locked>>84%50,082 psi85%2720 fps100%
Shooters World Precision<<locked>>88%51,242 psi87%2730 fps100%
Shooters World SW4350<<locked>>96%51,314 psi87%2756 fps97.3%
SNPE Vectan SP 11<<locked>>90%50,444 psi86%2779 fps99.7%
SNPE Vectan SP 7<<locked>>84%51,779 psi88%2740 fps98.8%
SNPE Vectan SP 9<<locked>>86%52,794 psi90%2769 fps99.8%
SNPE Vectan Tubal 3000<<locked>>84%51,126 psi87%2644 fps100%
SNPE Vectan Tubal 5000<<locked>>90%51,329 psi87%2641 fps100%
SNPE Vectan Tubal 7000<<locked>>94%50,531 psi86%2674 fps96.9%
Somchem S335<<locked>>84%50,517 psi86%2641 fps100%
Somchem S341<<locked>>84%51,358 psi87%2733 fps99.7%
Somchem S355<<locked>>92%52,518 psi89%2772 fps99.9%
Somchem S365ᴾ<<locked>>100%50,633 psi86%2831 fps100%
Vihtavuori N133<<locked>>84%51,474 psi88%2631 fps100%
Vihtavuori N135<<locked>>86%49,879 psi85%2667 fps100%
Vihtavuori N140<<locked>>86%50,604 psi86%2680 fps100%
Vihtavuori N150<<locked>>92%50,546 psi86%2703 fps100%
Vihtavuori N160<<locked>>96%51,880 psi88%2779 fps99.2%
Vihtavuori N530<<locked>>82%49,995 psi85%2697 fps100%
Vihtavuori N540<<locked>>88%52,083 psi89%2720 fps100%
Vihtavuori N550<<locked>>96%50,908 psi87%2782 fps99%
Vihtavuori N555ᴾ<<locked>>100%42,728 psi73%2703 fps98.5%
Winchester 6.5 StaBALL<<locked>>96%52,011 psi89%2756 fps100%
Winchester 748<<locked>>82%50,053 psi85%2743 fps100%
Winchester 760<<locked>>94%49,690 psi85%2782 fps96.8%
Winchester StaBALL HDᴾ<<locked>>100%34,882 psi59%2625 fps98.3%
Winchester StaBALL Match<<locked>>86%52,417 psi89%2772 fps100%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%48,414 psi82%2612 fps100%
Accurate 2495<<locked>>80%40,495 psi69%2526 fps100%
Accurate 2520<<locked>>80%48,269 psi82%2684 fps100%
Accurate 2700<<locked>>86%49,400 psi84%2661 fps95.7%
Accurate 4064<<locked>>80%38,305 psi65%2516 fps100%
Accurate 4350<<locked>>86%34,838 psi59%2500 fps95.5%
ADI AR 2206H<<locked>>80%44,527 psi76%2638 fps99%
ADI AR 2208<<locked>>80%37,971 psi65%2493 fps97.1%
ADI Benchmark 8208<<locked>>80%46,688 psi79%2648 fps99.8%
Alliant AR-Comp<<locked>>80%47,079 psi80%2638 fps100%
Alliant Power Pro 2000-MR<<locked>>80%40,654 psi69%2667 fps97.7%
Alliant Reloder- TS 15.5<<locked>>80%37,420 psi64%2510 fps98.4%
Alliant Reloder-15<<locked>>80%40,205 psi68%2572 fps97.8%
Alliant Reloder-16<<locked>>86%35,201 psi60%2516 fps95.6%
Alliant Reloder-1752.6 gr80%32,314 psi55%2470 fps96.3%
Alliant Reloder-23<<locked>>92%30,269 psi52%2411 fps95.2%
Alliant Reloder-26<<locked>>96%37,971 psi65%2657 fps96%
Baschieri & Pellagri 107<<locked>>80%44,121 psi75%2644 fps98.2%
Bofors RP3<<locked>>80%37,014 psi63%2510 fps98.4%
Bofors RP7<<locked>>90%46,340 psi79%2644 fps95.2%
Hodgdon Benchmark<<locked>>80%48,544 psi83%2641 fps100%
Hodgdon BL-C2<<locked>>80%45,629 psi78%2667 fps99.9%
Hodgdon H380<<locked>>80%37,855 psi64%2513 fps95.9%
Hodgdon H414<<locked>>90%43,265 psi74%2671 fps95.2%
Hodgdon H4895<<locked>>80%44,976 psi77%2651 fps99.4%
Hodgdon Hybrid 100V<<locked>>84%30,095 psi51%2359 fps95.4%
Hodgdon LEVERevolution<<locked>>80%41,205 psi70%2621 fps99.2%
Hodgdon Superformance<<locked>>92%46,325 psi79%2743 fps95.4%
Hodgdon TrailBoss<<locked>>80%26,208 psi45%1545 fps100%
Hodgdon VARGET<<locked>>80%43,337 psi74%2605 fps99.2%
IMR 3031<<locked>>80%44,628 psi76%2644 fps100%
IMR 4064<<locked>>80%39,871 psi68%2526 fps97.8%
IMR 4166 Enduron<<locked>>82%45,194 psi77%2602 fps95.5%
IMR 4350<<locked>>94%46,615 psi79%2667 fps95.3%
IMR 4451 Enduron<<locked>>88%45,266 psi77%2628 fps95.5%
IMR 4831<<locked>>86%33,721 psi57%2457 fps95.1%
IMR 4895<<locked>>80%41,220 psi70%2602 fps98.6%
IMR 8208 XBR<<locked>>80%46,688 psi79%2648 fps99.8%
Lovex D073.6<<locked>>80%43,801 psi75%2618 fps100%
Lovex S060<<locked>>80%44,715 psi76%2582 fps99.1%
Lovex S062<<locked>>80%39,639 psi67%2530 fps99.1%
Lovex S065<<locked>>86%39,204 psi67%2516 fps95.3%
Lovex S070<<locked>>90%42,366 psi72%2598 fps95.1%
Norma 201<<locked>>80%43,424 psi74%2592 fps99.6%
Norma 202<<locked>>80%43,932 psi75%2602 fps100%
Norma 203B<<locked>>80%39,552 psi67%2559 fps98.2%
Norma URP<<locked>>86%35,244 psi60%2503 fps95.4%
Ramshot Big Game<<locked>>80%39,334 psi67%2572 fps98%
Ramshot Hunter<<locked>>92%42,163 psi72%2654 fps95.8%
Ramshot TAC<<locked>>80%46,862 psi80%2654 fps97.6%
Ramshot Wild Boar<<locked>>80%46,354 psi79%2674 fps99.3%
ReloadSwiss RS 14<<locked>>80%26,455 psi45%1581 fps100%
ReloadSwiss RS 50<<locked>>82%41,205 psi70%2556 fps95.1%
ReloadSwiss RS 52<<locked>>80%42,627 psi73%2677 fps98.3%
ReloadSwiss RS 6052.6 gr80%34,490 psi59%2539 fps99.3%
ReloadSwiss RS 62<<locked>>86%34,809 psi59%2516 fps95%
ReloadSwiss RS 7058.7 gr88%37,376 psi64%2582 fps95.1%
Rottweil R 901<<locked>>80%47,253 psi80%2631 fps100%
Rottweil R 902<<locked>>80%41,278 psi70%2543 fps99.3%
Rottweil R 903<<locked>>80%34,751 psi59%2457 fps97.6%
Rottweil R 907<<locked>>90%46,340 psi79%2644 fps95.2%
Shooters World Long Rifle<<locked>>86%39,204 psi67%2516 fps95.3%
Shooters World Match Rifle<<locked>>80%43,801 psi75%2618 fps100%
Shooters World Precision<<locked>>80%39,639 psi67%2530 fps99.1%
Shooters World SW4350<<locked>>90%42,366 psi72%2598 fps95.1%
SNPE Vectan SP 11<<locked>>80%35,955 psi61%2507 fps97.1%
SNPE Vectan SP 7<<locked>>80%44,976 psi77%2628 fps97.7%
SNPE Vectan SP 9<<locked>>80%43,279 psi74%2608 fps98.8%
SNPE Vectan Tubal 3000<<locked>>80%44,962 psi77%2549 fps100%
SNPE Vectan Tubal 5000<<locked>>80%37,376 psi64%2418 fps100%
SNPE Vectan Tubal 7000<<locked>>90%44,237 psi75%2569 fps95.4%
Somchem S335<<locked>>80%44,440 psi76%2546 fps100%
Somchem S341<<locked>>80%44,889 psi76%2628 fps99.1%
Somchem S355<<locked>>80%35,549 psi61%2461 fps97.5%
Somchem S365<<locked>>82%27,456 psi47%2339 fps95.7%
Vihtavuori N133<<locked>>80%45,353 psi77%2543 fps100%
Vihtavuori N135<<locked>>80%40,915 psi70%2530 fps100%
Vihtavuori N140<<locked>>80%41,684 psi71%2539 fps100%
Vihtavuori N150<<locked>>80%33,939 psi58%2402 fps98.3%
Vihtavuori N160<<locked>>84%34,418 psi59%2454 fps95%
Vihtavuori N530<<locked>>80%46,905 psi80%2648 fps99.9%
Vihtavuori N540<<locked>>80%40,045 psi68%2523 fps100%
Vihtavuori N550<<locked>>86%36,405 psi62%2510 fps95.6%
Vihtavuori N555<<locked>>92%32,532 psi55%2487 fps95.3%
Winchester 6.5 StaBALL<<locked>>80%30,182 psi51%2326 fps95.6%
Winchester 748<<locked>>80%46,688 psi79%2690 fps100%
Winchester 760<<locked>>90%43,265 psi74%2671 fps95.2%
Winchester StaBALL HD<<locked>>96%30,472 psi52%2490 fps95.9%
Winchester StaBALL Match<<locked>>80%42,772 psi73%2612 fps99.2%

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.

<<locked>> you need an access license to unlock this data.

This overview compares 107 powders for .30 R Blaser loaded with the .308 | 165gr | Geco STAR. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,887 fps; across all powders the maximum-charge window runs from 1,729 fps to 2,887 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (405 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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 70, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .30 R Blaser with the .308 | 165gr | Geco STAR they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.

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