.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