.450 Bushmaster Reloading Data

Disclaimer: These loads were collected off the Internet and never tested by anyone at 450bm.com. We don’t know if they will work or if they were posted on the Internet by a psycho to blow up your gun and kill you. FOR INFORMATIONAL PURPOSES ONLY!

Lil’ Gun

185 SWCFMJ (tested in boltgun, not BM450b) OAL 2.040

  • 38grs. 2512 fps
  • 39grs.  2501 fps
  • 40grs. 2664 fps
  • 41grs. 2701 fps
  • 42grs. 2765 fps

200gr Encapsulated SWC

  • 43grs. 2483 fps
  • 44grs. 2495 fps
  • 45grs. 2542 fps
  • 46grs. 2587 fps

200gr Barnes, OAL 2.24

  • 39.5grs. 2500 fps
  • 40.6grs. 2630 fps
  • 41.7grs. 2690 fps
  • 43.9grs. 270 fps

200gr Barnes, OAL 2.24

  • 42.8grs
  • no secondary crimp 2414fps
  • light crimp 2475fps
  • heavy crimp 2564fps

200gr. Barnes 2.25 OAL

  • 48grs. 2620fps

230FMJ, OAL 2.100

  • 41grs. 2304 fps
  • 42grs. 2329 fps
  • 43grs. 2451 fps
  • 44grs. 2480 fps
  • 45grs 2539fps

230 gr. Zero Brand FMJ OAL 2.100

  • 33.8 – 2000 fps
  • 34.5 – 2180 fps
  • 36.1 – 2270 fps
  • 38.0 – 2350 fps
  • 39.5 – 2410 fps

240gr. XTP/MAG (Data from Hornady)

  • 32.0grs. 2000 fps
  • 34.1grs. 2100 fps
  • 36.2grs 2200 fps
  • 38.3grs. 2300 fps

250gr. FTX OAL 2.230

  • 35.1grs. 2127 fps
  • 37.0grs. 2218 fps

250gr. FTX OAL 2.225 (Data from Hornady)

  • 30.3grs. 1900 fps
  • 32.8grs. 2000 fps
  • 35.4grs. 2100 fps
  • 37.9grs. 2200 fps

250gr Montana Gold OAL unknown

  • 38grs. unknown fps

275gr Barnes Likely 2.20 OAL

  • 34.5grs
  • no secondary crimp 2050fps
  • light crimp 2093fps
  • heavy crimp 2128 fps
  • 34grs. 2000fps
  • 34.5grs. 2050
  • 35grs 2075fps

300gr. XTP/MAG OAL 2.065

  • 27.2grs. 1600 fps
  • 28.8grs 1700 fps
  • 30.5grs. 1800 fps
  • 32.2grs. 1900 fps

300gr .458 resized to .452 OAL unknown

  • 30.5grs. 1857 fps

300gr .458 resized to .452, 320gr actual weight 50/50 linotype-wheelweight alloy, gas check, OAL 2.15

  • 38grs. 2000+fps

400gr .458 resized to .452 OAL 2.14

  • 27grs. 1576 fps
  • 28 grs. 1614 fps

400gr. .458 resized to .452 OAL unknown (probably same as above as these from same poster)

  • 25.5 grs — 1387 fps
  • 26.0 grs — 1435 fps
  • 26.5 grs — 1498 fps
  • 27.0 grs — 1499 fps (All three went into a 1 1/3 inch group)
  • 27.5 grs — 1508 fps
  • 28.5 grs — 1543 fps
  • 29.0 grs — 1545 fps

AA1680

240gr. XTP/MAG, OAL 2.13, CCI 450 primers

  • 45g 2202 fps. NO pressure signs
  • 46g 2287 fps. NO pressure signs (case is sealing well at this point)
  • 47g 2367 fps. NO pressure signs
  • 48g 2404 fps. ABSOLUTLY NO PRESSURE SIGNS (accuracy is 1MOA)

250gr Montana Gold OAL 2.125

  • 46grs 2103 fps
  • 47grs 2111 fps
  • 48grs 2153 fps
  • 49grs 2093 fps
  • 50grs 2121 fps
  • 51grs 2162 fps

250gr. FTX OAL 2.26

  • 45g 2440 fps (my chrono took a crap after the first two shots)
  • 46g unknown fps “no pressure signs”
  • 47g unknown fps “no pressure signs”
  • 48g unknown fps “low to medium low pressure signs,” compressed load, bullet seated .400 inches

275gr Barnes

  • 39.2grs heavy crimp 1708fps.
  • 40.1grs heavy crimp 1749fps
  • 41.2grs heavy crimp 1811fps (100% case capacity)

H110

250gr Montana Gold, unknown OAL

  • 39.2 unknown FPS

240 XTP/MAG OAL 2.060 (Data from Hornady)

  • 35.6grs. 2000 fps
  • 37.2grs. 2100 fps
  • 38.9grs. 2200 fps
  • 40.6grs. 2300 fps

250 FTX OAL 2.225

  • 33.6grs. 1900 fps
  • 36.4grs. 2000 fps
  • 39.2grs. 2100 fps

275gr. Barnes X OAL 2.26

  • 29grs 1654fps
  • 31grs 1771fps
  • 33grs error
  • 35grs 1805fps
  • 37grs 1942fps
  • 38grs 2004fps

275gr. Barnes X OAL 2.225″

  • 37grs. 2000
  • 37.5grs. 2017
  • 38grs. 2097 fps
  • 38.5grs. 2077

300gr. XTP/MAG OAL 2.065

  • 29.5grs. 1600 fps
  • 31.9grs 1700 fps
  • 34.4grs. 1800 fps

Viht N120

300gr. XTP/MAG OAL 2.065

  • 34.2grs. 1600 fps
  • 36.0grs. 1700 fps
  • 37.7grs. 1800 fps
  • 39.5grs. 1900 fps

Meta

Tags

45 Professional 200gr. 230gr. 240gr. 250gr 275gr. 460S&W 5744 AA1680 Background Barnes Barnes X Case Capacity Crimp Crimping Crimping Tool FMJ FPFMJ Gas Tube H110 Headspacing Hornady Hornady 240gr XTP/MAG IMR4227 Lead Bullets Lil'Gun Lower Recoil Magazine Magnum Primers Modifications Montana Gold OAL Penetration Pressure Pressure Signs Rainier Resizing .458 Resizing 284 Side Crimp Spit-Fire TMZ SST Thunk TMJ Troubleshooting W296