Load data for .350 Rem. Mag. + .358 | 220gr | Atomic 29 HP

.350 Rem. Mag. cartridge drawing
Atomic 29 logo

Load Specifications

Bullet Manufacturer:Atomic 29
Bullet Weight:220 gr
Bullet Diameter:0.358"
Bullet Length:<<locked>>
Case Length (l3):2.17"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:72 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:22"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:16.5

Load data in caliber .350 Rem. Mag. with .358 | 220gr | Atomic 29 HP bullet and 65 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Hodgdon H335 and Hodgdon H322.

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 1680<<locked>>86%52,837 psi85%2411 fps100%
Accurate 2015ᴾ<<locked>>100%52,866 psi85%2490 fps100%
Accurate 2200<<locked>>92%56,173 psi90%2572 fps96%
Accurate 2230<<locked>>92%56,231 psi90%2579 fps96.4%
Accurate 2460<<locked>>98%55,521 psi89%2552 fps99.5%
Accurate 2495ᴾ<<locked>>100%40,393 psi65%2382 fps99.7%
Accurate 2520ᴾ<<locked>>100%52,199 psi84%2549 fps99%
Accurate 4064ᴾ<<locked>>100%37,623 psi60%2352 fps97.5%
Accurate LT-30<<locked>>92%53,795 psi86%2428 fps99.9%
Accurate LT-32<<locked>>92%54,302 psi87%2441 fps99.1%
ADI AR 2207<<locked>>90%53,345 psi86%2457 fps100%
ADI AR 2219<<locked>>94%55,521 psi89%2569 fps99.9%
ADI Benchmark 8208ᴾ<<locked>>100%52,214 psi84%2510 fps97.5%
Alliant AR-Compᴾ<<locked>>100%49,298 psi79%2520 fps100%
Alliant Power Pro 1200-R<<locked>>98%56,289 psi90%2651 fps97.8%
Alliant Reloder-10x<<locked>>96%53,867 psi86%2513 fps100%
Alliant Reloder-7<<locked>>90%55,056 psi88%2470 fps100%
Baschieri & Pellagri 106<<locked>>94%55,347 psi89%2467 fps100%
Hodgdon Benchmarkᴾ<<locked>>100%55,869 psi90%2516 fps98.5%
Hodgdon BL-C2ᴾ<<locked>>100%49,385 psi79%2530 fps97.7%
Hodgdon CFE223ᴾ<<locked>>100%56,028 psi90%2657 fps96.2%
Hodgdon H322<<locked>>96%53,417 psi86%2543 fps99.9%
Hodgdon H335<<locked>>96%54,404 psi87%2562 fps99.6%
Hodgdon H4198<<locked>>90%55,869 psi90%2470 fps99.8%
Hodgdon H4895ᴾ<<locked>>100%49,124 psi79%2500 fps96.3%
Hodgdon TrailBossᴾ<<locked>>100%32,358 psi52%1470 fps100%
Hodgdon VARGETᴾ<<locked>>100%48,414 psi78%2464 fps95.9%
IMR 3031ᴾ<<locked>>100%46,644 psi75%2510 fps99.8%
IMR 4198<<locked>>96%55,477 psi89%2487 fps100%
IMR 4227<<locked>>86%56,101 psi90%2425 fps100%
IMR 8208 XBRᴾ<<locked>>100%52,214 psi84%2510 fps97.5%
Lovex D073.4<<locked>>90%52,779 psi85%2523 fps98.9%
Lovex D073.5<<locked>>98%55,651 psi89%2556 fps98.8%
Lovex D073.6ᴾ<<locked>>100%45,963 psi74%2470 fps98.1%
Lovex S053<<locked>>86%54,389 psi87%2375 fps100%
Lovex S060ᴾ<<locked>>100%51,314 psi82%2448 fps95.9%
Norma 200<<locked>>92%53,882 psi86%2497 fps100%
Norma 201ᴾ<<locked>>100%47,456 psi76%2444 fps96.7%
Norma 202ᴾ<<locked>>100%47,485 psi76%2467 fps98.9%
Ramshot Wild Boarᴾ<<locked>>100%51,576 psi83%2533 fps95.9%
Ramshot X-Terminator<<locked>>98%55,071 psi88%2523 fps96.4%
ReloadSwiss RS 14ᴾ<<locked>>100%32,155 psi52%1503 fps100%
ReloadSwiss RS 36<<locked>>86%55,927 psi90%2461 fps100%
ReloadSwiss RS 40<<locked>>98%56,318 psi90%2566 fps99.2%
Rottweil R 901ᴾ<<locked>>100%51,561 psi83%2493 fps99.2%
Rottweil R 902ᴾ<<locked>>100%44,672 psi72%2395 fps96%
Shooters World AR Plus<<locked>>90%52,779 psi85%2523 fps98.9%
Shooters World Match Rifleᴾ<<locked>>100%45,963 psi74%2470 fps98.1%
Shooters World Tactical Rifle<<locked>>94%53,940 psi86%2490 fps97.3%
SNPE Vectan BA6 1/2<<locked>>90%54,853 psi88%2238 fps100%
SNPE Vectan SP 10<<locked>>94%55,869 psi90%2575 fps99.6%
SNPE Vectan SP 3<<locked>>96%55,303 psi89%2530 fps100%
SNPE Vectan Tubal 3000ᴾ<<locked>>100%51,430 psi82%2431 fps99.2%
SNPE Vectan Tubal 5000ᴾ<<locked>>100%41,089 psi66%2297 fps98.5%
Somchem S321<<locked>>98%53,592 psi86%2552 fps98%
Somchem S335ᴾ<<locked>>100%49,298 psi79%2425 fps99.5%
Vihtavuori N110<<locked>>82%56,376 psi90%2313 fps100%
Vihtavuori N120<<locked>>90%53,461 psi86%2411 fps100%
Vihtavuori N130<<locked>>98%54,389 psi87%2467 fps100%
Vihtavuori N133ᴾ<<locked>>100%50,589 psi81%2431 fps100%
Vihtavuori N135ᴾ<<locked>>100%42,366 psi68%2395 fps99.8%
Vihtavuori N140ᴾ<<locked>>100%45,049 psi72%2408 fps98.7%
Vihtavuori N530ᴾ<<locked>>100%53,229 psi85%2516 fps97.7%
Vihtavuori N540ᴾ<<locked>>100%43,221 psi69%2395 fps98%
Winchester 748ᴾ<<locked>>100%50,807 psi81%2549 fps98.1%

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

Start Load - Barrel Length: 22"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>80%43,497 psi70%2283 fps100%
Accurate 2015<<locked>>80%27,920 psi45%2060 fps96.6%
Accurate 2200<<locked>>90%52,649 psi84%2523 fps95.3%
Accurate 2230<<locked>>90%52,272 psi84%2523 fps95.6%
Accurate 2460<<locked>>84%34,330 psi55%2218 fps95.6%
Accurate 2495<<locked>>86%25,019 psi40%2064 fps95.8%
Accurate 2520<<locked>>88%34,142 psi55%2254 fps95.1%
Accurate 4064<<locked>>94%31,009 psi50%2218 fps95.4%
Accurate LT-30<<locked>>80%37,144 psi60%2172 fps97.9%
Accurate LT-32<<locked>>80%37,536 psi60%2175 fps96%
ADI AR 2207<<locked>>80%39,175 psi63%2260 fps100%
ADI AR 2219<<locked>>80%34,316 psi55%2231 fps96.9%
ADI Benchmark 8208<<locked>>94%43,323 psi69%2375 fps95.6%
Alliant AR-Comp<<locked>>80%25,831 psi41%2073 fps98.2%
Alliant Power Pro 1200-R45.6 gr90%43,323 psi69%2451 fps95.1%
Alliant Reloder-10x<<locked>>80%32,576 psi52%2172 fps99%
Alliant Reloder-7<<locked>>80%40,379 psi65%2264 fps100%
Baschieri & Pellagri 106<<locked>>80%35,273 psi57%2162 fps97.7%
Hodgdon Benchmark<<locked>>88%38,754 psi62%2251 fps95%
Hodgdon BL-C2<<locked>>94%40,205 psi64%2382 fps95.5%
Hodgdon CFE223<<locked>>98%52,286 psi84%2602 fps95.4%
Hodgdon H32240.5 gr80%31,531 psi51%2169 fps95.9%
Hodgdon H33544.4 gr82%33,895 psi54%2224 fps95.6%
Hodgdon H4198<<locked>>80%41,031 psi66%2251 fps98.2%
Hodgdon H4895<<locked>>98%46,122 psi74%2454 fps95.6%
Hodgdon TrailBoss<<locked>>80%23,815 psi38%1312 fps100%
Hodgdon VARGET<<locked>>98%45,484 psi73%2421 fps95.2%
IMR 3031<<locked>>84%28,036 psi45%2136 fps95.4%
IMR 4198<<locked>>80%34,606 psi55%2169 fps99.7%
IMR 4227<<locked>>80%46,746 psi75%2306 fps100%
IMR 8208 XBR<<locked>>94%43,323 psi69%2375 fps95.6%
Lovex D073.4<<locked>>80%36,898 psi59%2270 fps95.7%
Lovex D073.5<<locked>>88%39,160 psi63%2310 fps95.6%
Lovex D073.6<<locked>>92%34,693 psi56%2277 fps95.2%
Lovex S053<<locked>>80%45,542 psi73%2264 fps100%
Lovex S060<<locked>>98%48,269 psi77%2402 fps95.3%
Norma 200<<locked>>80%36,666 psi59%2238 fps99.8%
Norma 201<<locked>>96%42,003 psi67%2359 fps95.4%
Norma 202<<locked>>88%32,256 psi52%2195 fps95.2%
Ramshot Wild Boar<<locked>>98%48,109 psi77%2480 fps95.1%
Ramshot X-Terminator<<locked>>94%48,182 psi77%2425 fps95%
ReloadSwiss RS 14<<locked>>80%23,540 psi38%1339 fps100%
ReloadSwiss RS 36<<locked>>80%46,311 psi74%2336 fps100%
ReloadSwiss RS 40<<locked>>84%35,737 psi57%2238 fps95%
Rottweil R 901<<locked>>86%33,866 psi54%2192 fps95.4%
Rottweil R 902<<locked>>98%41,959 psi67%2349 fps95.3%
Shooters World AR Plus<<locked>>80%36,898 psi59%2270 fps95.7%
Shooters World Match Rifle<<locked>>92%34,693 psi56%2277 fps95.2%
Shooters World Tactical Rifle<<locked>>88%43,888 psi70%2346 fps95.2%
SNPE Vectan BA6 1/2<<locked>>80%42,003 psi67%2083 fps100%
SNPE Vectan SP 10<<locked>>80%34,737 psi56%2234 fps95.8%
SNPE Vectan SP 3<<locked>>80%33,286 psi53%2178 fps97.6%
SNPE Vectan Tubal 3000<<locked>>86%33,185 psi53%2129 fps95.3%
SNPE Vectan Tubal 5000<<locked>>90%30,153 psi48%2083 fps95.4%
Somchem S321<<locked>>90%40,596 psi65%2352 fps95.3%
Somchem S335<<locked>>84%30,139 psi48%2087 fps95.3%
Vihtavuori N110<<locked>>80%53,142 psi85%2277 fps100%
Vihtavuori N120<<locked>>80%39,392 psi63%2224 fps100%
Vihtavuori N130<<locked>>80%31,386 psi50%2100 fps98.5%
Vihtavuori N133<<locked>>80%27,224 psi44%2014 fps96%
Vihtavuori N135<<locked>>84%25,382 psi41%2044 fps95.6%
Vihtavuori N140<<locked>>90%32,779 psi53%2185 fps95.7%
Vihtavuori N530<<locked>>94%43,468 psi70%2372 fps95.7%
Vihtavuori N540<<locked>>92%33,446 psi54%2211 fps95.3%
Winchester 748<<locked>>92%39,030 psi63%2352 fps95.4%

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 65 powders for .350 Rem. Mag. loaded with the .358 | 220gr | Atomic 29 HP. Hodgdon CFE223 delivers the highest muzzle velocity at 2,657 fps; across all powders the maximum-charge window runs from 1,470 fps to 2,657 fps. Accurate 2015 gives the best case fill at 100 %, and 65 of the 65 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (430 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.358" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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 1200-R, Hodgdon H335, Hodgdon H322 rank at the top here: for .350 Rem. Mag. with the .358 | 220gr | Atomic 29 HP 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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