10mm SOCOM (pic)

TonyRumore · February 23 2016 06:15:30 PM MST

We'll be testing this thing in an AR-15 shortly. The case holds nearly 60 grains of powder. It should push the 135gr bullet to about 3,000fps.

Tony

Rich10 · February 23 2016 07:59:36 PM MST

${$default_shocked_smiley}$

${$default_grin_smiley}$

${$default_cool_smiley}$

oldman10mm · February 23 2016 08:06:46 PM MST

WANT !!!

sqlbullet · February 23 2016 08:19:13 PM MST

Very nifty

Blades · February 23 2016 08:42:14 PM MST

Whoa. ${$default_shocked_smiley}$ Will the bullet hold up at 3000 fps?

TonyRumore · February 24 2016 06:46:36 AM MST

I guess we'll find out.

Tony Rumore
Tromix

Schrambo · February 24 2016 06:49:27 AM MST

Tony-

For the love of God please stop!!

I've already have your 375 and 458 SOCOMs, you KNOW I'll have to build this, too!! ${$default_wink_smiley}$

Looking forward to the testing...

The_Shadow · February 24 2016 06:56:23 AM MST

Tony you have gone and done it now! ${$default_shocked_smiley}$ It appears to be based on the 458 SOCOM case necked down to 0.400", I'll continue to study this one... ${$default_cool_smiley}$

The thing will be bullets capable of holding up to the velocities...I can see the Barnes, Lehigh, Cutting Edge, Hornady and a few other bullets as being better suited for holding up to the higher velocities.

Thanks for sharing and showing us the workup. ${$default_cheesy_smiley}$

sqlbullet · February 24 2016 09:28:20 AM MST

I guess I have to order another AR lower and upper.

Blades · February 24 2016 11:07:10 AM MST

Quote from: TonyRumore on February 24 2016 06:46:36 AM MST
I guess we'll find out.

Tony Rumore
Tromix

LOL - I suppose that is the way to find out. Shoot it and see what happens.

Pablo · February 24 2016 11:26:54 AM MST

Oh boy. I need to cancel my 9x25 order now.

Need dies for this.

The_Shadow · February 24 2016 11:48:12 AM MST

Some of the 100% copper / bronze projectiles would be of interest for the 10mm SOCOM
Barnes has the 125gr Catalog # 30500, 140gr Catalog # 30502 and 155gr Catalog # 30504 in the TAC XP line
Lehigh Defense has Controlled Fracturing 140gr Bullet, Xtreme Defense 115gr Bullet, Xtreme Penetrator 140gr Bullet
Cutting Edge has the Handgun Raptor HGHP 120gr, HGHP 150gr and Handgun Solid HGS 190gr
Copper Only Projectiles (C.O.P.) 155gr

Maker Bullets none shown
North Fork Bullets none shown

TonyRumore · February 24 2016 04:03:03 PM MST

Quote from: Pablo on February 24 2016 11:26:54 AM MST
Oh boy. I need to cancel my 9x25 order now.

Need dies for this.

We actually have 10mm SOCOM neck sizing dies that we use in our .375 SOCOM 3-die set. It is used to pre-form the .458 SOCOM cases to .40 caliber before finishing them off in the .375 full length size die.

So to make a 10mm SOCOM case, we first neck size a .458 SOCOM case to 10mm, then run the case up into a .458 SOCOM full length size die that has the expander button replaced with a 40 caliber pill. The bullet is then installed using a standard .458 SOCOM seating die.

We designed the 10mm SOCOM chamber with a relatively long throat, so you can seat a 200gr XTP to the base of the case neck and it will still chamber even though it is seated WAY long compared to how it would be seated in a standard 10mm case.

Tony Rumore
Tromix

rw · February 24 2016 05:23:36 PM MST

I did not need to see this..

Keiichi · February 24 2016 05:50:10 PM MST

Amazing looking cartridge you've got there. Definitely one I'd be interested in shooting some day.

My only question, though, (and I'm genuinely interested in finding this out for my carbine) is who makes bullets designed for such high velocities? Wouldn't most factory hollow points just disintegrate going that fast?

Edit: reread the thread, looks like a few options were proposed as good candidates. I'm very interested in seeing gel test results for this. Thanks for sharing your experiments with us ${$default_smiley_smiley}$