MP .458 SOCOM Please

**jmort** · 02-21-2019, 10:16 AM

There has been some bit of discussion and some bit of action I believe on this.
I love the .458 SOCOM as the only Plug and Play AR-15 heavy with no mag mods and bullets up to 600 grains.
As points of reference, here is the Barnes, but I see no need for a boat-tail
Otherwise nice looking bullet

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And Missouri Bullets is selling a 410 grain dedicated cast .458 SOCOM "sub-sonic thumper," their words, which would be real nice with a hollow-point , and a gas check. But a lighter super-sonic bullet would be nice, or two versions one streched out for sub-sonic.

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Hope this can get going and garner some interest. Could also work in a 45-70.
Thoughts???

**bluejay75** · 02-21-2019, 11:08 AM

The Barnes boolit posted is a much easier clone than the 452 version. Lose the tip, move grooves down lose the boat tail and I think its a great start. If you have some or one...lets get it sent to lar45 to see what the lead version looks like. Standby.

**hicard** · 02-21-2019, 04:51 PM

Yah, add lube grooves, HP's and a gas check to that Missouri bullet and you might have something. Maybe 325-335 grs.

**jmort** · 02-22-2019, 09:34 AM

Originally Posted by bluejay75

The Barnes boolit posted is a much easier clone than the 452 version. Lose the tip, move grooves down lose the boat tail and I think its a great start. If you have some or one...lets get it sent to lar45 to see what the lead version looks like. Standby.

I will order a box today.

**thraxx** · 02-22-2019, 09:54 AM

Originally Posted by bluejay75

The Barnes boolit posted is a much easier clone than the 452 version. Lose the tip, move grooves down lose the boat tail and I think its a great start. If you have some or one...lets get it sent to lar45 to see what the lead version looks like. Standby.

I'm pretty sure I have a box at home. PM me where to send it.

**bluejay75** · 02-22-2019, 10:14 AM

Originally Posted by thraxx

I'm pretty sure I have a box at home. PM me where to send it.

Pm to lar45 for address please.

**jmort** · 02-22-2019, 10:39 AM

Originally Posted by thraxx

I'm pretty sure I have a box at home. PM me where to send it.

Bless you for doing this.
Here is his member contact info
http://castboolits.gunloads.com/member.php?15-lar45

**tradbear55** · 02-22-2019, 12:29 PM

Will this bullet have a crimp ring. I would love to get this for my 45-70, but would prefer a crimp ring.

**jmort** · 02-22-2019, 12:34 PM

Since this discussion is ongoing we shall see. A crimp groove would be beneficial in a tube magazine. Once a design proposal gets up for discussion, everything can be hashed out.

**Smoke4320** · 02-22-2019, 12:59 PM

458 socom does not require a mag modification or special mag ..
any quality 223/5.56 AR15 mag should work

**dragon813gt** · 02-22-2019, 08:46 PM

The round was designed to work w/ standard GI magazines. Proprietary mags are made for more reliable feeding. But they aren’t needed. Pmags may need some modifications for reliable feeding. But they will also work unmodified w/ the right bullet. You don’t need proprietary mags w/ the 458 Socom.

**Echd** · 02-24-2019, 09:13 PM

With some GI mags it can help to bend the feed lips out just a touch. Not all of them, and it doesn't seem to be any rhyme or reason as to which ones. But it's easy to do and you do so little or it the mags still work fine with 223 afterwards in my experience.

**pmer** · 02-24-2019, 10:03 PM

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I got these 405 grain Marlin boolits to feed in my SOCOM by grinding the magazine lips back. I'm not sure why but I think its because the cartridge pops up free of the mag earlier in the forward movement of the BCG.

.325 meplat, the upper mag is the modified one.

After working with a smooth sided 305 grain with no check, a grooved and checked boolit doesn't sound to bad.

**thraxx** · 02-25-2019, 10:52 PM

I've got Barnes .458 - 300gr Tac-TX BT bullets, this is what we're basing the design on, correct?

**jmort** · 02-26-2019, 01:01 AM

Originally Posted by thraxx

I've got Barnes .458 - 300gr Tac-TX BT bullets, this is what we're basing the design on, correct?

Yes
Could you send a couple to LAR45. Please send him PM for him mailing address.
http://castboolits.gunloads.com/member.php?15-lar45

**jmort** · 02-26-2019, 01:03 AM

Originally Posted by thraxx

I've got Barnes .458 - 300gr Tac-TX BT bullets, this is what we're basing the design on, correct?

This is the bullet

Caliber 458 Socom
Type TTSX BT
Weight 300
Diameter .458
S.D. 0.204
B.C. 0.236
Twist Rate Standard
Length 1.235
Box QTY 50
Catalog # 30642

Yes
Could you send a couple to LAR45. Please send him PM for him mailing address.
http://castboolits.gunloads.com/member.php?15-lar45

**thraxx** · 02-26-2019, 10:27 AM

Thats the one.

I sent LAR45 a PM last night.

**jmort** · 02-26-2019, 10:46 AM

Bless you

**bluejay75** · 02-26-2019, 12:47 PM

Now what would be nice is if someone could make silicone tips to glue in for them to the specs for one of the pins that are offered.

**thraxx** · 02-26-2019, 01:57 PM

...or a muti-cavity mold for making your own?

BP	Bronze Point	IMR	Improved Military Rifle	PTD	Pointed
BR	Bench Rest	M	Magnum	RN	Round Nose
BT	Boat Tail	PL	Power-Lokt	SP	Soft Point
C	Compressed Charge	PR	Primer	SPCL	Soft Point "Core-Lokt"
HP	Hollow Point	PSPCL	Pointed Soft Point "Core Lokt"	C.O.L.	Cartridge Overall Length
PSP	Pointed Soft Point	Spz	Spitzer Point	SBT	Spitzer Boat Tail
LRN	Lead Round Nose	LWC	Lead Wad Cutter	LSWC	Lead Semi Wad Cutter
GC	Gas Check

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