Load data for .300 CR + .308 | 180gr | A-Square MONO RN

.300 CR cartridge drawing
A-Square logo

Load Specifications

Bullet Manufacturer:A-Square
Bullet Weight:180 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:53 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:6.0

Load data in caliber .300 CR with .308 | 180gr | A-Square MONO RN bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and Hodgdon CFE223.

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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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 2015<<locked>>92%55,158 psi88%2490 fps100%
Accurate 2200<<locked>>84%55,883 psi90%2575 fps98.8%
Accurate 2230<<locked>>82%52,779 psi85%2536 fps98.7%
Accurate 2460<<locked>>88%53,505 psi86%2510 fps100%
Accurate 2495<<locked>>98%54,708 psi88%2539 fps100%
Accurate 2520<<locked>>92%54,563 psi87%2562 fps100%
Accurate 4064ᴾ<<locked>>100%54,288 psi87%2572 fps100%
Accurate LT-30<<locked>>86%55,854 psi90%2444 fps100%
Accurate LT-32<<locked>>86%56,246 psi90%2464 fps100%
ADI AR 2206H<<locked>>94%53,838 psi86%2562 fps99.2%
ADI AR 2207<<locked>>82%53,896 psi86%2421 fps100%
ADI AR 2208ᴾ<<locked>>100%54,882 psi88%2556 fps98.8%
ADI AR 2219<<locked>>86%55,738 psi89%2552 fps100%
ADI Benchmark 8208<<locked>>92%53,330 psi86%2526 fps99.7%
Alliant AR-Comp<<locked>>94%56,101 psi90%2556 fps100%
Alliant Power Pro 1200-R<<locked>>88%54,897 psi88%2625 fps99.6%
Alliant Power Pro 2000-MR<<locked>>96%53,388 psi86%2657 fps98.6%
Alliant Reloder- TS 15.5ᴾ<<locked>>100%53,301 psi85%2572 fps99.6%
Alliant Reloder-10x<<locked>>88%55,245 psi89%2497 fps100%
Alliant Reloder-15<<locked>>98%54,650 psi88%2595 fps99%
Alliant Reloder-17ᴾ<<locked>>100%47,297 psi76%2569 fps98.7%
Alliant Reloder-7<<locked>>82%54,984 psi88%2441 fps100%
Baschieri & Pellagri 106<<locked>>86%54,752 psi88%2444 fps100%
Baschieri & Pellagri 107<<locked>>94%53,577 psi86%2579 fps98.4%
Bofors RP3ᴾ<<locked>>100%53,461 psi86%2585 fps99.7%
Hodgdon Benchmark<<locked>>92%55,912 psi90%2516 fps100%
Hodgdon BL-C2<<locked>>94%55,245 psi89%2598 fps100%
Hodgdon CFE223<<locked>>90%53,316 psi85%2631 fps98.8%
Hodgdon H322<<locked>>88%54,114 psi87%2533 fps100%
Hodgdon H335<<locked>>88%55,216 psi89%2559 fps100%
Hodgdon H380ᴾ<<locked>>100%55,593 psi89%2595 fps98%
Hodgdon H4198<<locked>>82%54,491 psi87%2444 fps100%
Hodgdon H4895<<locked>>94%54,273 psi87%2575 fps99.5%
Hodgdon Hybrid 100Vᴾ<<locked>>100%37,652 psi60%2329 fps96.3%
Hodgdon LEVERevolution<<locked>>98%55,999 psi90%2648 fps99.8%
Hodgdon TrailBossᴾ<<locked>>100%34,055 psi55%1496 fps100%
Hodgdon VARGET<<locked>>96%56,086 psi90%2579 fps99.6%
IMR 3031<<locked>>94%52,953 psi85%2562 fps100%
IMR 4064<<locked>>98%54,230 psi87%2539 fps98.9%
IMR 4198<<locked>>88%55,941 psi90%2461 fps100%
IMR 4895<<locked>>98%55,985 psi90%2625 fps99.5%
IMR 8208 XBR<<locked>>92%53,330 psi86%2526 fps99.7%
Lovex D073.4<<locked>>82%53,461 psi86%2520 fps100%
Lovex D073.5<<locked>>88%53,519 psi86%2520 fps100%
Lovex D073.6<<locked>>96%56,130 psi90%2592 fps100%
Lovex S060<<locked>>94%54,679 psi88%2503 fps99.2%
Lovex S062<<locked>>98%53,359 psi86%2539 fps99.8%
Norma 200<<locked>>84%55,187 psi88%2470 fps100%
Norma 201<<locked>>96%56,101 psi90%2562 fps99.9%
Norma 202<<locked>>96%56,231 psi90%2569 fps100%
Norma 203B<<locked>>98%53,693 psi86%2585 fps99.2%
Ramshot Big Game<<locked>>98%54,070 psi87%2608 fps99.1%
Ramshot TAC<<locked>>92%54,143 psi87%2536 fps97.1%
Ramshot Wild Boar<<locked>>92%52,823 psi85%2556 fps99%
Ramshot X-Terminator<<locked>>90%54,969 psi88%2533 fps99.1%
ReloadSwiss RS 14ᴾ<<locked>>100%34,330 psi55%1532 fps100%
ReloadSwiss RS 40<<locked>>88%53,258 psi85%2516 fps100%
ReloadSwiss RS 50<<locked>>98%53,011 psi85%2530 fps95.9%
ReloadSwiss RS 52<<locked>>96%54,186 psi87%2654 fps98.9%
ReloadSwiss RS 60ᴾ<<locked>>100%50,618 psi81%2631 fps100%
Rottweil R 901<<locked>>92%53,838 psi86%2507 fps100%
Rottweil R 902<<locked>>98%56,086 psi90%2552 fps99.9%
Rottweil R 903ᴾ<<locked>>100%49,893 psi80%2530 fps99.2%
Shooters World AR Plus<<locked>>82%53,461 psi86%2520 fps100%
Shooters World Match Rifle<<locked>>96%56,130 psi90%2592 fps100%
Shooters World Precision<<locked>>98%53,359 psi86%2539 fps99.8%
Shooters World Tactical Rifle<<locked>>86%53,693 psi86%2493 fps99.6%
SNPE Vectan BA6 1/2<<locked>>82%53,505 psi86%2185 fps100%
SNPE Vectan SP 10<<locked>>86%56,231 psi90%2566 fps100%
SNPE Vectan SP 11ᴾ<<locked>>100%51,909 psi83%2585 fps98.9%
SNPE Vectan SP 3<<locked>>88%56,347 psi90%2516 fps100%
SNPE Vectan SP 7<<locked>>94%55,361 psi89%2559 fps97.8%
SNPE Vectan SP 9<<locked>>96%55,767 psi89%2585 fps99.3%
SNPE Vectan Tubal 3000<<locked>>94%55,463 psi89%2474 fps100%
SNPE Vectan Tubal 5000ᴾ<<locked>>100%54,520 psi87%2467 fps100%
Somchem S321<<locked>>90%54,723 psi88%2566 fps99.9%
Somchem S335<<locked>>94%53,940 psi86%2470 fps100%
Somchem S341<<locked>>94%54,897 psi88%2559 fps99.2%
Somchem S355ᴾ<<locked>>100%50,792 psi81%2530 fps99.2%
Somchem S365ᴾ<<locked>>100%36,405 psi58%2369 fps97.5%
Vihtavuori N120<<locked>>82%53,824 psi86%2375 fps100%
Vihtavuori N130<<locked>>90%55,216 psi89%2451 fps100%
Vihtavuori N133<<locked>>94%55,129 psi88%2464 fps100%
Vihtavuori N135<<locked>>98%54,766 psi88%2526 fps100%
Vihtavuori N140<<locked>>96%53,171 psi85%2503 fps100%
Vihtavuori N150ᴾ<<locked>>100%49,095 psi79%2474 fps99.6%
Vihtavuori N160ᴾ<<locked>>100%43,468 psi70%2428 fps95.9%
Vihtavuori N530<<locked>>92%54,143 psi87%2530 fps99.8%
Vihtavuori N540<<locked>>98%54,737 psi88%2546 fps100%
Winchester 6.5 StaBALLᴾ<<locked>>100%44,744 psi72%2418 fps98.1%
Winchester 748<<locked>>92%52,533 psi84%2569 fps100%
Winchester StaBALL Match<<locked>>96%55,187 psi88%2595 fps99.6%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%38,000 psi61%2244 fps100%
Accurate 2200<<locked>>80%48,994 psi79%2474 fps97.8%
Accurate 2230<<locked>>80%49,342 psi79%2484 fps98.2%
Accurate 2460<<locked>>80%41,017 psi66%2326 fps99.6%
Accurate 2495<<locked>>80%30,530 psi49%2159 fps99.7%
Accurate 2520<<locked>>80%36,419 psi58%2283 fps98.7%
Accurate 4064<<locked>>80%28,892 psi46%2139 fps97.7%
Accurate LT-30<<locked>>80%46,441 psi74%2320 fps100%
Accurate LT-32<<locked>>80%46,818 psi75%2333 fps99.8%
ADI AR 2206H<<locked>>80%34,751 psi56%2234 fps95.1%
ADI AR 2207<<locked>>80%50,473 psi81%2379 fps100%
ADI AR 2208<<locked>>88%38,000 psi61%2283 fps95.3%
ADI AR 2219<<locked>>80%45,730 psi73%2418 fps100%
ADI Benchmark 8208<<locked>>80%36,695 psi59%2251 fps97.1%
Alliant AR-Comp<<locked>>80%35,230 psi56%2267 fps100%
Alliant Power Pro 1200-R<<locked>>80%42,076 psi67%2421 fps98%
Alliant Power Pro 2000-MR41.3 gr88%40,828 psi65%2438 fps95.6%
Alliant Reloder- TS 15.5<<locked>>84%32,314 psi52%2211 fps95.4%
Alliant Reloder-10x<<locked>>80%43,424 psi70%2336 fps100%
Alliant Reloder-15<<locked>>86%37,492 psi60%2313 fps95.4%
Alliant Reloder-17<<locked>>92%36,477 psi58%2359 fps95.8%
Alliant Reloder-7<<locked>>80%51,605 psi83%2398 fps100%
Baschieri & Pellagri 106<<locked>>80%45,107 psi72%2316 fps100%
Baschieri & Pellagri 107<<locked>>86%41,133 psi66%2379 fps95.8%
Bofors RP3<<locked>>84%31,502 psi51%2208 fps95.3%
Hodgdon Benchmark<<locked>>80%39,030 psi63%2257 fps98.2%
Hodgdon BL-C2<<locked>>80%34,374 psi55%2260 fps97.2%
Hodgdon CFE22338.4 gr80%37,913 psi61%2369 fps95.5%
Hodgdon H322<<locked>>80%41,800 psi67%2356 fps100%
Hodgdon H335<<locked>>80%42,467 psi68%2375 fps99.8%
Hodgdon H380<<locked>>92%42,786 psi69%2402 fps95.4%
Hodgdon H4198<<locked>>80%51,082 psi82%2398 fps100%
Hodgdon H4895<<locked>>80%34,940 psi56%2244 fps95.9%
Hodgdon Hybrid 100V<<locked>>98%35,520 psi57%2287 fps95.5%
Hodgdon LEVERevolution<<locked>>82%33,243 psi53%2254 fps95.7%
Hodgdon TrailBoss<<locked>>80%25,425 psi41%1339 fps100%
Hodgdon VARGET<<locked>>80%33,808 psi54%2205 fps95.3%
IMR 3031<<locked>>80%33,750 psi54%2260 fps99.7%
IMR 4064<<locked>>86%37,594 psi60%2270 fps95.5%
IMR 4198<<locked>>80%44,237 psi71%2306 fps100%
IMR 4895<<locked>>84%35,897 psi58%2293 fps95.7%
IMR 8208 XBR<<locked>>80%36,695 psi59%2251 fps97.1%
Lovex D073.4<<locked>>80%50,024 psi80%2470 fps99.9%
Lovex D073.5<<locked>>80%40,727 psi65%2326 fps98.9%
Lovex D073.6<<locked>>80%32,735 psi52%2218 fps97.8%
Lovex S060<<locked>>80%36,042 psi58%2195 fps95.5%
Lovex S062<<locked>>80%30,748 psi49%2139 fps95.3%
Norma 200<<locked>>80%48,878 psi78%2392 fps100%
Norma 201<<locked>>80%34,272 psi55%2205 fps96.5%
Norma 202<<locked>>80%34,171 psi55%2221 fps98.7%
Norma 203B<<locked>>84%34,490 psi55%2254 fps95.1%
Ramshot Big Game<<locked>>86%36,492 psi59%2313 fps95.3%
Ramshot TAC<<locked>>86%44,744 psi72%2395 fps95.1%
Ramshot Wild Boar<<locked>>80%35,636 psi57%2264 fps95.3%
Ramshot X-Terminator<<locked>>80%39,929 psi64%2293 fps96.5%
ReloadSwiss RS 14<<locked>>80%25,498 psi41%1371 fps100%
ReloadSwiss RS 40<<locked>>80%41,220 psi66%2333 fps99.2%
ReloadSwiss RS 50<<locked>>96%49,763 psi80%2484 fps95.2%
ReloadSwiss RS 5239.1 gr86%38,609 psi62%2395 fps95.7%
ReloadSwiss RS 60<<locked>>84%30,168 psi48%2218 fps95.8%
Rottweil R 901<<locked>>80%37,869 psi61%2257 fps99.2%
Rottweil R 902<<locked>>80%32,619 psi52%2162 fps95.9%
Rottweil R 903<<locked>>88%33,852 psi54%2251 fps95.8%
Shooters World AR Plus<<locked>>80%50,024 psi80%2470 fps99.9%
Shooters World Match Rifle<<locked>>80%32,735 psi52%2218 fps97.8%
Shooters World Precision<<locked>>80%30,748 psi49%2139 fps95.3%
Shooters World Tactical Rifle<<locked>>80%43,598 psi70%2343 fps98.3%
SNPE Vectan BA6 1/2<<locked>>80%50,894 psi82%2156 fps100%
SNPE Vectan SP 10<<locked>>80%46,238 psi74%2425 fps100%
SNPE Vectan SP 11<<locked>>88%35,375 psi57%2293 fps95%
SNPE Vectan SP 3<<locked>>80%43,801 psi70%2346 fps100%
SNPE Vectan SP 7<<locked>>86%42,409 psi68%2365 fps95.1%
SNPE Vectan SP 9<<locked>>82%35,650 psi57%2254 fps95.4%
SNPE Vectan Tubal 3000<<locked>>80%35,940 psi58%2178 fps98.9%
SNPE Vectan Tubal 5000<<locked>>80%29,283 psi47%2060 fps98.3%
Somchem S321<<locked>>80%39,073 psi63%2320 fps98.1%
Somchem S335<<locked>>80%35,491 psi57%2188 fps99.4%
Somchem S341<<locked>>82%36,622 psi59%2267 fps95.6%
Somchem S355<<locked>>86%32,996 psi53%2215 fps95.1%
Somchem S365<<locked>>94%30,327 psi49%2224 fps95%
Vihtavuori N120<<locked>>80%50,444 psi81%2336 fps100%
Vihtavuori N130<<locked>>80%40,872 psi66%2254 fps100%
Vihtavuori N133<<locked>>80%35,940 psi58%2185 fps100%
Vihtavuori N135<<locked>>80%31,067 psi50%2159 fps99.7%
Vihtavuori N140<<locked>>80%32,300 psi52%2165 fps98.5%
Vihtavuori N150<<locked>>84%29,327 psi47%2113 fps95.3%
Vihtavuori N160<<locked>>98%40,756 psi65%2379 fps95.1%
Vihtavuori N530<<locked>>80%36,506 psi59%2247 fps97.2%
Vihtavuori N540<<locked>>80%30,850 psi49%2149 fps97.7%
Winchester 6.5 StaBALL<<locked>>92%34,519 psi55%2224 fps95%
Winchester 748<<locked>>80%35,288 psi57%2280 fps97.7%
Winchester StaBALL Match<<locked>>80%32,547 psi52%2208 fps95%

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 116 powders for .300 CR loaded with the .308 | 180gr | A-Square MONO RN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,657 fps; across all powders the maximum-charge window runs from 1,496 fps to 2,657 fps. Accurate 4064 gives the best case fill at 100 %, and 116 of the 116 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (430 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, Accurate 4350, ADI AR 2208 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for .300 CR with the .308 | 180gr | A-Square MONO RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Bofors RP7, Hodgdon H414 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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