Load data for .300 Savage + .308 | 155gr | Norma GTX

.300 Savage cartridge drawing
Norma logo

Load Specifications

Bullet Manufacturer:Norma
Bullet Weight:155 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):1.87"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:52.5 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:22"
Max. allowed Pressure:52,939 psi
Recommended Twist Rate:1:13.5

Load data in caliber .300 Savage with .308 | 155gr | Norma GTX bullet and 57 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 Accurate 2520.

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: 22"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>94%47,616 psi90%2513 fps100%
Accurate 2460<<locked>>90%45,788 psi86%2510 fps98.5%
Accurate 2495ᴾ<<locked>>100%45,165 psi85%2543 fps100%
Accurate 2520<<locked>>94%46,050 psi87%2556 fps98.3%
Accurate 4064ᴾ<<locked>>100%41,945 psi79%2513 fps98.5%
Accurate LT-30<<locked>>86%47,427 psi90%2438 fps99.6%
Accurate LT-32<<locked>>86%47,805 psi90%2448 fps98.5%
ADI AR 2207<<locked>>84%47,355 psi89%2474 fps100%
ADI AR 2219<<locked>>86%45,252 psi85%2523 fps99.3%
ADI Benchmark 8208<<locked>>94%46,441 psi88%2520 fps96.6%
Alliant AR-Comp<<locked>>96%46,978 psi89%2582 fps100%
Alliant Power Pro 1200-R<<locked>>90%46,804 psi88%2608 fps96.1%
Alliant Reloder-10x<<locked>>88%45,382 psi86%2490 fps100%
Alliant Reloder-7<<locked>>82%46,137 psi87%2444 fps100%
Baschieri & Pellagri 106<<locked>>86%45,585 psi86%2428 fps99.5%
Hodgdon Benchmark<<locked>>92%46,876 psi89%2484 fps97.3%
Hodgdon BL-C2<<locked>>96%46,847 psi88%2585 fps97.4%
Hodgdon H322<<locked>>90%47,050 psi89%2552 fps99.5%
Hodgdon H335<<locked>>90%47,819 psi90%2569 fps99%
Hodgdon H4198<<locked>>82%46,224 psi87%2431 fps99.2%
Hodgdon H4895<<locked>>96%46,992 psi89%2566 fps96%
Hodgdon LEVERevolutionᴾ<<locked>>100%47,906 psi90%2621 fps96.5%
Hodgdon TrailBossᴾ<<locked>>100%32,880 psi62%1549 fps100%
IMR 3031<<locked>>98%47,369 psi89%2615 fps99.9%
IMR 4198<<locked>>88%46,702 psi88%2467 fps100%
IMR 8208 XBR<<locked>>94%46,441 psi88%2520 fps96.6%
Lovex D073.4<<locked>>84%46,209 psi87%2523 fps98.1%
Lovex D073.5<<locked>>90%45,977 psi87%2516 fps97.5%
Lovex D073.6<<locked>>98%47,007 psi89%2582 fps98.4%
Lovex S062ᴾ<<locked>>100%45,745 psi86%2526 fps96.6%
Norma 200<<locked>>84%45,252 psi85%2467 fps100%
Norma 201<<locked>>96%45,469 psi86%2507 fps96.5%
Norma 202<<locked>>96%45,252 psi85%2526 fps98.7%
ReloadSwiss RS 14ᴾ<<locked>>100%32,982 psi62%1585 fps100%
ReloadSwiss RS 40<<locked>>90%46,586 psi88%2523 fps98%
Rottweil R 901<<locked>>94%46,717 psi88%2516 fps98.7%
Rottweil R 902<<locked>>98%45,455 psi86%2500 fps96.4%
Shooters World AR Plus<<locked>>84%46,209 psi87%2523 fps98.1%
Shooters World Match Rifle<<locked>>98%47,007 psi89%2582 fps98.4%
Shooters World Precisionᴾ<<locked>>100%45,745 psi86%2526 fps96.6%
Shooters World Tactical Rifle<<locked>>88%46,920 psi89%2490 fps96.2%
SNPE Vectan BA6 1/2<<locked>>82%46,905 psi89%2231 fps100%
SNPE Vectan SP 10<<locked>>86%45,934 psi87%2530 fps98.7%
SNPE Vectan SP 3<<locked>>88%46,325 psi88%2503 fps99.8%
SNPE Vectan Tubal 3000<<locked>>94%45,876 psi87%2448 fps98.6%
SNPE Vectan Tubal 5000ᴾ<<locked>>100%44,324 psi84%2438 fps99.1%
Somchem S321<<locked>>92%47,282 psi89%2559 fps97.1%
Somchem S335<<locked>>96%47,079 psi89%2487 fps99.4%
Vihtavuori N120<<locked>>84%47,442 psi90%2428 fps100%
Vihtavuori N130<<locked>>90%45,774 psi86%2444 fps100%
Vihtavuori N133<<locked>>96%47,848 psi90%2490 fps100%
Vihtavuori N135ᴾ<<locked>>100%46,238 psi87%2546 fps100%
Vihtavuori N140<<locked>>98%45,542 psi86%2507 fps98.9%
Vihtavuori N530<<locked>>94%47,036 psi89%2526 fps96.8%
Vihtavuori N540ᴾ<<locked>>100%47,050 psi89%2549 fps98.8%
Winchester 748<<locked>>94%44,831 psi85%2552 fps97.2%
Winchester StaBALL Match<<locked>>98%47,021 psi89%2569 fps95.9%

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

Start Load - Barrel Length: 22"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%30,676 psi58%2198 fps97.6%
Accurate 2460<<locked>>80%32,895 psi62%2267 fps95.2%
Accurate 2495<<locked>>82%24,801 psi47%2119 fps95.7%
Accurate 252036.9 gr86%35,085 psi66%2352 fps95.5%
Accurate 4064<<locked>>90%30,458 psi58%2277 fps95.2%
Accurate LT-30<<locked>>80%39,407 psi74%2300 fps98.5%
Accurate LT-32<<locked>>80%39,784 psi75%2306 fps96.8%
ADI AR 2207<<locked>>80%41,959 psi79%2388 fps100%
ADI AR 2219<<locked>>80%37,072 psi70%2372 fps97.8%
ADI Benchmark 8208<<locked>>90%41,104 psi78%2428 fps95.2%
Alliant AR-Comp<<locked>>80%28,210 psi53%2215 fps99.1%
Alliant Power Pro 1200-R<<locked>>88%43,888 psi83%2556 fps95.4%
Alliant Reloder-10x<<locked>>80%35,389 psi67%2310 fps99.5%
Alliant Reloder-7<<locked>>80%43,323 psi82%2398 fps100%
Baschieri & Pellagri 106<<locked>>80%37,695 psi71%2293 fps98.4%
Hodgdon Benchmark<<locked>>86%39,175 psi74%2346 fps95.3%
Hodgdon BL-C2<<locked>>90%38,203 psi72%2431 fps95.1%
Hodgdon H322<<locked>>80%33,939 psi64%2306 fps97%
Hodgdon H335<<locked>>80%34,272 psi65%2316 fps95.9%
Hodgdon H4198<<locked>>80%43,395 psi82%2385 fps98.8%
Hodgdon H4895<<locked>>94%43,859 psi83%2510 fps95.2%
Hodgdon LEVERevolution<<locked>>98%44,802 psi85%2569 fps95.7%
Hodgdon TrailBoss<<locked>>80%24,381 psi46%1385 fps100%
IMR 303132.2 gr82%28,616 psi54%2231 fps95.8%
IMR 4198<<locked>>80%37,014 psi70%2303 fps99.9%
IMR 8208 XBR<<locked>>90%41,104 psi78%2428 fps95.2%
Lovex D073.4<<locked>>80%40,306 psi76%2421 fps96.8%
Lovex D073.5<<locked>>84%37,478 psi71%2362 fps95.3%
Lovex D073.6<<locked>>90%35,665 psi67%2379 fps95.7%
Lovex S062<<locked>>96%40,379 psi76%2431 fps95.1%
Norma 200<<locked>>80%39,871 psi75%2379 fps100%
Norma 201<<locked>>92%40,147 psi76%2411 fps95%
Norma 202<<locked>>86%33,040 psi62%2293 fps95.6%
ReloadSwiss RS 14<<locked>>80%24,323 psi46%1414 fps100%
ReloadSwiss RS 40<<locked>>82%36,071 psi68%2329 fps95.3%
Rottweil R 901<<locked>>82%32,851 psi62%2247 fps95.2%
Rottweil R 902<<locked>>94%40,524 psi77%2411 fps95.1%
Shooters World AR Plus<<locked>>80%40,306 psi76%2421 fps96.8%
Shooters World Match Rifle<<locked>>90%35,665 psi67%2379 fps95.7%
Shooters World Precision<<locked>>96%40,379 psi76%2431 fps95.1%
Shooters World Tactical Rifle<<locked>>86%44,092 psi83%2441 fps95.5%
SNPE Vectan BA6 1/2<<locked>>80%44,396 psi84%2198 fps100%
SNPE Vectan SP 10<<locked>>80%37,652 psi71%2379 fps96.9%
SNPE Vectan SP 3<<locked>>80%35,969 psi68%2316 fps98.4%
SNPE Vectan Tubal 3000<<locked>>84%33,634 psi64%2221 fps95.6%
SNPE Vectan Tubal 5000<<locked>>86%28,921 psi55%2133 fps95%
Somchem S321<<locked>>88%41,191 psi78%2454 fps95.6%
Somchem S335<<locked>>82%30,806 psi58%2178 fps95.7%
Vihtavuori N120<<locked>>80%42,076 psi79%2352 fps100%
Vihtavuori N130<<locked>>80%33,953 psi64%2234 fps99.1%
Vihtavuori N133<<locked>>80%29,544 psi56%2149 fps97.1%
Vihtavuori N135<<locked>>80%24,685 psi47%2093 fps95.2%
Vihtavuori N140<<locked>>86%31,328 psi59%2231 fps95.3%
Vihtavuori N530<<locked>>90%41,133 psi78%2425 fps95.3%
Vihtavuori N540<<locked>>90%34,113 psi64%2310 fps95.7%
Winchester 74838.3 gr90%39,334 psi74%2451 fps95.7%
Winchester StaBALL Match<<locked>>96%44,179 psi83%2523 fps95.1%

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 57 powders for .300 Savage loaded with the .308 | 155gr | Norma GTX. Hodgdon LEVERevolution delivers the highest muzzle velocity at 2,621 fps; across all powders the maximum-charge window runs from 1,549 fps to 2,621 fps. Accurate 2495 gives the best case fill at 100 %, and 57 of the 57 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (365 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Hodgdon LEVERevolution 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, Accurate 2520 rank at the top here: for .300 Savage with the .308 | 155gr | Norma GTX 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.

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