Load data for .308 Win. + .308 | 165gr | Geco STAR

.308 Win. cartridge drawing
Geco logo

Load Specifications

Bullet Manufacturer:Geco
Bullet Weight:165 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.014"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:56 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:60,191 psi
Recommended Twist Rate:1:13.0

Load data in caliber .308 Win. with .308 | 165gr | Geco STAR bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Winchester 748.

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: 24"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>82%52,257 psi87%2500 fps100%
Accurate 2015<<locked>>96%54,186 psi90%2602 fps100%
Accurate 2200<<locked>>86%52,794 psi88%2641 fps97.3%
Accurate 2230<<locked>>86%53,026 psi88%2651 fps97.7%
Accurate 2460<<locked>>92%53,011 psi88%2625 fps99.9%
Accurate 2495ᴾ<<locked>>100%49,168 psi82%2598 fps100%
Accurate 2520<<locked>>96%53,983 psi90%2674 fps99.9%
Accurate 4064ᴾ<<locked>>100%45,658 psi76%2579 fps99.8%
Accurate LT-30<<locked>>88%53,505 psi89%2526 fps100%
Accurate LT-32<<locked>>88%53,954 psi90%2543 fps99.9%
ADI AR 2206H<<locked>>98%53,476 psi89%2671 fps98.2%
ADI AR 2207<<locked>>86%53,925 psi90%2549 fps100%
ADI AR 2208ᴾ<<locked>>100%48,196 psi80%2566 fps96.5%
ADI AR 2219<<locked>>88%52,344 psi87%2631 fps100%
ADI Benchmark 8208<<locked>>96%53,185 psi88%2635 fps99.1%
Alliant AR-Comp<<locked>>96%51,256 psi85%2631 fps100%
Alliant Power Pro 1200-R<<locked>>92%54,215 psi90%2733 fps98.9%
Alliant Power Pro 2000-MRᴾ<<locked>>100%53,432 psi89%2756 fps97.1%
Alliant Reloder- TS 15.5ᴾ<<locked>>100%46,166 psi77%2582 fps97.9%
Alliant Reloder-10x<<locked>>90%51,387 psi85%2575 fps100%
Alliant Reloder-15ᴾ<<locked>>100%50,604 psi84%2648 fps97.3%
Alliant Reloder-7<<locked>>84%52,011 psi86%2523 fps100%
Baschieri & Pellagri 106<<locked>>88%52,127 psi87%2526 fps100%
Baschieri & Pellagri 107<<locked>>98%53,272 psi89%2677 fps97.1%
Bofors RP3ᴾ<<locked>>100%45,426 psi75%2582 fps97.8%
Hodgdon Benchmark<<locked>>94%53,113 psi88%2592 fps99.4%
Hodgdon BL-C2<<locked>>96%50,908 psi85%2657 fps99.2%
Hodgdon CFE223<<locked>>94%53,171 psi88%2740 fps97.7%
Hodgdon H322<<locked>>92%54,346 psi90%2657 fps100%
Hodgdon H335<<locked>>90%51,793 psi86%2631 fps99.9%
Hodgdon H4198<<locked>>84%52,127 psi87%2526 fps100%
Hodgdon H4895<<locked>>98%53,882 psi90%2684 fps98.7%
Hodgdon LEVERevolutionᴾ<<locked>>100%52,011 psi86%2703 fps98.8%
Hodgdon TrailBossᴾ<<locked>>100%33,069 psi55%1552 fps100%
Hodgdon VARGET<<locked>>98%52,605 psi87%2641 fps98.4%
IMR 3031<<locked>>98%51,967 psi86%2680 fps100%
IMR 4064ᴾ<<locked>>100%50,676 psi84%2595 fps97.2%
IMR 4198<<locked>>90%52,765 psi88%2546 fps100%
IMR 4895ᴾ<<locked>>100%51,750 psi86%2680 fps98.1%
IMR 8208 XBR<<locked>>96%53,185 psi88%2635 fps99.1%
Lovex D073.4<<locked>>86%53,693 psi89%2638 fps99.8%
Lovex D073.5<<locked>>92%53,098 psi88%2628 fps99.5%
Lovex D073.6<<locked>>98%51,372 psi85%2651 fps99.8%
Lovex S053<<locked>>82%53,795 psi89%2451 fps100%
Lovex S060<<locked>>96%51,619 psi86%2566 fps97.8%
Lovex S062ᴾ<<locked>>100%49,371 psi82%2595 fps98.7%
Norma 200<<locked>>86%51,372 psi85%2552 fps100%
Norma 201<<locked>>98%52,083 psi87%2621 fps99%
Norma 202<<locked>>98%52,185 psi87%2635 fps100%
Norma 203Bᴾ<<locked>>100%49,603 psi82%2638 fps97.6%
Ramshot Big Gameᴾ<<locked>>100%50,227 psi83%2657 fps97.4%
Ramshot Wild Boar<<locked>>96%52,794 psi88%2667 fps98%
Ramshot X-Terminator<<locked>>92%51,967 psi86%2595 fps97.7%
ReloadSwiss RS 14ᴾ<<locked>>100%33,127 psi55%1588 fps100%
ReloadSwiss RS 40<<locked>>92%53,548 psi89%2638 fps99.8%
ReloadSwiss RS 52ᴾ<<locked>>100%53,388 psi89%2756 fps97.8%
ReloadSwiss RS 60ᴾ<<locked>>100%44,135 psi73%2625 fps98.8%
Rottweil R 901<<locked>>96%53,055 psi88%2618 fps99.9%
Rottweil R 902ᴾ<<locked>>100%52,069 psi87%2615 fps99%
Rottweil R 903ᴾ<<locked>>100%42,235 psi70%2520 fps96.8%
Shooters World AR Plus<<locked>>86%53,693 psi89%2638 fps99.8%
Shooters World Match Rifle<<locked>>98%51,372 psi85%2651 fps99.8%
Shooters World Precisionᴾ<<locked>>100%49,371 psi82%2595 fps98.7%
Shooters World Tactical Rifle<<locked>>90%54,230 psi90%2608 fps98.9%
SNPE Vectan BA6 1/2<<locked>>84%51,924 psi86%2283 fps100%
SNPE Vectan SP 10<<locked>>88%52,823 psi88%2638 fps100%
SNPE Vectan SP 11ᴾ<<locked>>100%45,179 psi75%2582 fps96.4%
SNPE Vectan SP 3<<locked>>90%52,605 psi87%2592 fps100%
SNPE Vectan SP 9<<locked>>98%52,054 psi86%2644 fps97.9%
SNPE Vectan Tubal 3000<<locked>>96%52,112 psi87%2546 fps99.9%
SNPE Vectan Tubal 5000ᴾ<<locked>>100%47,601 psi79%2493 fps100%
Somchem S321<<locked>>92%50,836 psi84%2625 fps99%
Somchem S335<<locked>>98%53,708 psi89%2585 fps100%
Somchem S341<<locked>>96%51,024 psi85%2615 fps97.6%
Somchem S355ᴾ<<locked>>100%43,656 psi73%2530 fps96.9%
Vihtavuori N120<<locked>>86%53,954 psi90%2500 fps100%
Vihtavuori N130<<locked>>92%51,793 psi86%2526 fps100%
Vihtavuori N133<<locked>>96%51,619 psi86%2539 fps100%
Vihtavuori N135ᴾ<<locked>>100%50,212 psi83%2598 fps100%
Vihtavuori N140ᴾ<<locked>>100%52,765 psi88%2618 fps100%
Vihtavuori N150ᴾ<<locked>>100%42,119 psi70%2474 fps97.8%
Vihtavuori N530<<locked>>96%54,099 psi90%2641 fps99.2%
Vihtavuori N540ᴾ<<locked>>100%50,908 psi85%2612 fps99.9%
Winchester 748<<locked>>96%52,214 psi87%2680 fps99.5%
Winchester StaBALL Match<<locked>>98%51,140 psi85%2648 fps98.3%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>80%48,907 psi81%2457 fps100%
Accurate 2015<<locked>>80%32,648 psi54%2254 fps99.3%
Accurate 2200<<locked>>80%43,294 psi72%2484 fps95.1%
Accurate 2230<<locked>>80%42,699 psi71%2484 fps95.5%
Accurate 2460<<locked>>80%35,215 psi59%2329 fps97.7%
Accurate 2495<<locked>>80%24,845 psi41%2136 fps97.5%
Accurate 2520<<locked>>80%30,661 psi51%2267 fps95.8%
Accurate 4064<<locked>>84%27,050 psi45%2205 fps95.7%
Accurate LT-30<<locked>>80%41,916 psi70%2356 fps99.7%
Accurate LT-32<<locked>>80%42,293 psi70%2365 fps98.7%
ADI AR 2206H<<locked>>88%39,001 psi65%2425 fps95%
ADI AR 2207<<locked>>80%44,860 psi75%2428 fps100%
ADI AR 2208<<locked>>96%42,511 psi71%2467 fps95%
ADI AR 2219<<locked>>80%39,929 psi66%2438 fps99.5%
ADI Benchmark 8208<<locked>>84%36,593 psi61%2352 fps95.7%
Alliant AR-Comp<<locked>>80%30,037 psi50%2274 fps100%
Alliant Power Pro 1200-R35.4 gr82%38,885 psi65%2474 fps95.8%
Alliant Power Pro 2000-MR<<locked>>96%46,470 psi77%2638 fps95.4%
Alliant Reloder- TS 15.5<<locked>>92%35,679 psi59%2388 fps95.1%
Alliant Reloder-10x<<locked>>80%37,797 psi63%2362 fps100%
Alliant Reloder-15<<locked>>94%41,698 psi69%2500 fps95.2%
Alliant Reloder-7<<locked>>80%45,847 psi76%2438 fps100%
Baschieri & Pellagri 106<<locked>>80%40,277 psi67%2349 fps99.7%
Baschieri & Pellagri 107<<locked>>94%46,731 psi78%2575 fps95.7%
Bofors RP3<<locked>>94%36,999 psi61%2431 fps95.7%
Hodgdon Benchmark<<locked>>80%34,461 psi57%2264 fps95.6%
Hodgdon BL-C2<<locked>>84%33,634 psi56%2349 fps95.5%
Hodgdon CFE22341.4 gr88%43,250 psi72%2575 fps95.5%
Hodgdon H322<<locked>>80%36,376 psi60%2369 fps98.9%
Hodgdon H335<<locked>>80%36,738 psi61%2382 fps98.3%
Hodgdon H4198<<locked>>80%46,282 psi77%2441 fps99.8%
Hodgdon H4895<<locked>>88%39,189 psi65%2438 fps95.8%
Hodgdon LEVERevolution<<locked>>90%37,434 psi62%2448 fps95.5%
Hodgdon TrailBoss<<locked>>80%24,366 psi40%1385 fps100%
Hodgdon VARGET<<locked>>88%38,232 psi64%2398 fps95.3%
IMR 3031<<locked>>80%28,776 psi48%2254 fps97.7%
IMR 4064<<locked>>94%42,032 psi70%2454 fps95.2%
IMR 4198<<locked>>80%39,392 psi65%2346 fps100%
IMR 4895<<locked>>92%39,856 psi66%2480 fps95.4%
IMR 8208 XBR<<locked>>84%36,593 psi61%2352 fps95.7%
Lovex D073.4<<locked>>80%43,221 psi72%2484 fps98.8%
Lovex D073.5<<locked>>80%34,737 psi58%2323 fps96.3%
Lovex D073.6<<locked>>82%29,472 psi49%2251 fps95.3%
Lovex S053<<locked>>80%51,068 psi85%2418 fps100%
Lovex S060<<locked>>88%40,408 psi67%2379 fps95.3%
Lovex S062<<locked>>90%36,027 psi60%2362 fps95.7%
Norma 200<<locked>>80%42,554 psi71%2425 fps100%
Norma 201<<locked>>86%35,549 psi59%2336 fps95.5%
Norma 202<<locked>>80%29,269 psi49%2215 fps96%
Norma 203B<<locked>>94%40,814 psi68%2487 fps95.6%
Ramshot Big Game<<locked>>94%40,973 psi68%2497 fps95.1%
Ramshot Wild Boar<<locked>>88%40,263 psi67%2457 fps95.2%
Ramshot X-Terminator<<locked>>86%42,612 psi71%2444 fps95.7%
ReloadSwiss RS 14<<locked>>80%24,555 psi41%1421 fps100%
ReloadSwiss RS 40<<locked>>80%36,071 psi60%2343 fps97.1%
ReloadSwiss RS 52<<locked>>94%43,410 psi72%2592 fps95.5%
ReloadSwiss RS 60<<locked>>92%33,750 psi56%2395 fps95.4%
Rottweil R 901<<locked>>80%32,532 psi54%2254 fps96.8%
Rottweil R 902<<locked>>88%35,824 psi60%2336 fps95.6%
Rottweil R 903<<locked>>96%36,912 psi61%2421 fps95.3%
Shooters World AR Plus<<locked>>80%43,221 psi72%2484 fps98.8%
Shooters World Match Rifle<<locked>>82%29,472 psi49%2251 fps95.3%
Shooters World Precision<<locked>>90%36,027 psi60%2362 fps95.7%
Shooters World Tactical Rifle<<locked>>80%38,348 psi64%2352 fps95.8%
SNPE Vectan BA6 1/2<<locked>>80%46,412 psi77%2215 fps100%
SNPE Vectan SP 10<<locked>>80%40,277 psi67%2438 fps98.8%
SNPE Vectan SP 11<<locked>>98%42,322 psi70%2530 fps95.6%
SNPE Vectan SP 3<<locked>>80%38,566 psi64%2372 fps99.7%
SNPE Vectan SP 9<<locked>>90%39,987 psi66%2444 fps95.2%
SNPE Vectan Tubal 3000<<locked>>80%31,604 psi53%2188 fps96.7%
SNPE Vectan Tubal 5000<<locked>>80%25,498 psi42%2060 fps95.4%
Somchem S321<<locked>>80%33,852 psi56%2320 fps95.2%
Somchem S335<<locked>>80%30,777 psi51%2192 fps97.4%
Somchem S341<<locked>>90%41,452 psi69%2457 fps95.5%
Somchem S355<<locked>>96%38,392 psi64%2431 fps95.4%
Vihtavuori N120<<locked>>80%44,962 psi75%2385 fps100%
Vihtavuori N130<<locked>>80%36,114 psi60%2283 fps99.9%
Vihtavuori N133<<locked>>80%31,473 psi52%2201 fps99%
Vihtavuori N135<<locked>>80%26,353 psi44%2159 fps97.9%
Vihtavuori N140<<locked>>80%27,717 psi46%2159 fps95.7%
Vihtavuori N150<<locked>>94%34,476 psi57%2329 fps95.7%
Vihtavuori N530<<locked>>84%36,114 psi60%2339 fps95.6%
Vihtavuori N540<<locked>>82%28,297 psi47%2188 fps95.3%
Winchester 74837 gr82%32,401 psi54%2320 fps95.3%
Winchester StaBALL Match<<locked>>90%39,175 psi65%2448 fps95.7%

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 99 powders for .308 Win. loaded with the .308 | 165gr | Geco STAR. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,552 fps to 2,756 fps. Accurate 2495 gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (415 MPa), the top charges use 52–90 %, 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 2495, Accurate 2700, Accurate 4064 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Winchester 748 rank at the top here: for .308 Win. with the .308 | 165gr | Geco STAR they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Hodgdon Hybrid 100V, IMR 4166 Enduron 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.

← All load data