I'm kicking myself for not saving some data from .458socomforums.com now that it is down. I was wondering if a thread could be started here. just data, no long dialogues.

Here's a few from Ammo Guide (http://ammoguide.com/cgi-bin/ai.cgi?sn=BMZphYYaaW&catid=662)- use at your risk:

BULLET                                     POWDER                                 CHARGE                   M/V                         M/E

300 Barnes                                 Alliant/Herc Reloder-7                  44.0F                      1930                           2482
300 Remington                           Alliant/Herc Reloder-7                  44.0F                       1940                           2508
500 Barnes                                Alliant/Herc 2400                         17.0F                         875                             850
500 Hornady                              IMR-4198                                    19.4M                        955                            1013
550 Woodleigh                          Alliant/Herc 2400                          17.0                          920                            1034
550 Woodleigh                          IMR 800-X                                    17.5F                       1200                            1759

M= MAXIMUM load
F= FULL Case

ETA: Table didn't embed for shit- sorry.

I saved a lot of the data from the 300 and 405 grain "bulk bullets" from midway. I'll post when I get home.

Cold mentioned in the AR variants section that they're switching to a new style/server or something to take care of the problems but it will take a while. I'm not sure how long a while is, but normally with IT and internet stuff its a priority and a while is only a few days. So I'm hoping that maybe by the weekend it'll be back up.

Do an advanced search on google looking just on the site: 458socomforums.com and click on the cached data and you will be able see past topics.

Ah, thats a great idea!

Here is what I saved from 458 socom forums months ago
Hope it helps
(right click-save as) and you'll always have them!

in addition to the charts posted above here are three loads I saved from various threads at 458socomforums.com

According to Dave Fortier's reloading data with Lil Gun:

405 Remy fp
29 grains
2.080 oal

300 Remy jhp
35 grains
2.020 oal

300 Barnes X
33 grains
2.260 oal

If you have the ability to compare the case volume under the bullet of any of these three to the FTX load, this should give you a place to start. Depending on your oal, I would start around 30 grains and work up.

loading 32gr of WW296 with an oal of 2.200. Velocity is around 1850 fps if I remember correctly with no pressure signs and 100% weapon function. This is with a 17" barrel. Groups are running 1.5" at 100 yds.These loads work for ME in MY weapon. Use at your own risk.

average velocity of 1764fps with 40gr of Re-7 with the 325gr FTX .05 off the lands, using Remington 2 1/2 primers.

Here is a load I worked up for my 16" RRA upper.


Barnes .458 SOCOM TAC-X bullets
H110 31.3 grains
Stareline brass
CCI 350 primers
2.255 overall length

Please tell us the range and target you shot to recover those bullets.

Nice pics.

Those were shot 100 yards into 18" of wet phone book and went through 15" to 16"

lol i was gonna post some of my data but it looks like I got beat to it.

I can still contribute a bit I suppose..

458 SOCOM
300gr Remington JHP
Remington 2½ Large Pistol Primers
41.5gr Reloder-7
OAL: 2.08"

Cycles, no high pressure signs, velocities were above 1760fps

Reloder-7 seems to yield lower velocities when compared to other powders, but it does allow for a complete case fill.


458 SOCOM
500gr Hornady DGS
Remington 2½ Large Pistol Primers
23.7gr-26gr Reloder-7
OAL: 2.250"

23.7gr charge has very light recoil but still cycles. 26gr felt more stout but did not produce any high pressure signs. I suspect velocity is just under the supersonic threshhold for the 23.7gr charge and a bit faster than 1200fps for the 26gr charge.

36.5 grains of W296
WLP primer
Remington 300 grain JHP
Hornady dies with Lee factory crimp (light to medium crimp)
2020 fps from 16" TJ upper
ymmv