This ad for this 10mm ammo SCS® TUI® - 190Gr Solid Copper worries me!

Started by The_Shadow, July 13 2025 07:43:36 AM MDT

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The_Shadow

10MM SCS® TUI® - 190Gr Solid Copper Ammo 

https://fortscottmunitions.com/collections/handgun-ammo/products/10mm-scs-tui-190gr-solid-copper-ammo-copy

I would do a pull down documentation to see what's actually being used as powder.
They show 13 grains of Power Pistol as the load for this ammo. It would seem to be way much for a 190- grain bullet especially a LONG SOLID COPPER which will be longer than a lead or lead core bullet!
If I had some I'd do that documentation...
The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna

10 Round

Send me your address, I'll order it and have it shipped to you as I live in California. I don't order ammo. You can send me what's left

The_Shadow

The main reason I posted this one, is that the Fort Scott Ammo company had this shown as the load on their web page.  In my opinion if they are loading 13 grains of Alliant Power Pistol it would be a problem and possible dangerous load.
10 Round, I appreciate that offer but ...
10 Round, any handloader could do a careful pull-down an take a good picture of the powder and weigh what's inside to verify. If I could see the picture of the powder, it is possible I could ID it.

Mailing ammo is not a cost-effective deal. Also, because USPS is not allowed.

As a side note:
The most Power Pistol powder I saw loaded was Buffalo Bore with the Barnes 155 TAC-XP where they loaded 11.0 grains and the powder was very compressed with that Solid Copper...
The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna

10 Round

I live in California. I can't buy Ammo online. It's gotta go through a dealer and I have to show ID usually order out-of-state with one of my daughters.
 get a fake address. If you're worried and I'll send you the full box, you can send it back to me. If there's any left

10 Round

If you give me an address, I'll have it shipped to your address, you can keep it. I didn't read it all.Didn't know you couldn't ship at usps assholes.
 plus you can't even buy power pistol now

10 Round

And if you don't want to keep it, you can send me the cases and the bullets, no powder, and I'll reload them here with something else

The_Shadow

10 Round that ammo is too expensive for that project and shipping makes it even worse...Thanks though!
I will look around locally to see if I can find any.
The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna

crockett

Some guys are known to load to the non-existing SAAMI standard of 10mm +p+, and a little beyond, in a better supported chamber with stronger barrel steel, until the cases show beer bulges and birth giving stretch marks, up to 1600 FPS.

Now you know one of those guys.


By the way, I found 11.3gr of PP in UW's copper bullet loads. And I went into the higher 12s with my faster clones. You do the math.


















The_Shadow

#8
Originally did a UW pulldown of the Underwood 150 grain like Crockett has shown above and that is posted on the forum here:
https://www.10mm-auto.com/index.php?topic=6588.0

Well it amazes me just how much the Power Pistol loads have been pushed with the 100% copper projectiles.
Buffalo Bore's load sort of scared the crap out of me when I did the pull down on the Barnes 155 grain TAC-XP where 11.0 grains was stuffed and compressed as a solid.  I had to scrape it out of the case as shown.

Had a friend crunch the numbers in QuickLoads and that is where the real scare showed the high pressure valuses.
The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna

crockett

Quote from: The_Shadow on August 13 2025 03:36:14 PM MDTOriginally did a UW pulldown of the Underwood 150 grain like Crockett has shown above and that is posted on the forum here:

Well it amazes me just how much the Power Pistol loads have been pushed with the 100% copper projectiles.
Buffalo Bore's load sort of scared the crap out of me when I did the pull down on the Barnes 155 grain TAC-XP where 11.0 grains was stuffed and compressed as a solid.  I had to scrape it out of the case as shown.

Had a friend crunch the numbers in QuickLoads and that is where the real scare showed the high pressure valuses.



I skip the powder variables, because at the end of the day projectile velocity / size / caliber dictates the required barrel pressure.

Its 10k PSI over. I have done worse. Granted, with better barrels and uploading while watching for a dozen parameters.



crockett

Keep in mind that SAAMI max barrel pressure goes back to the initial design of the caliber and related tech. For the ten, that was 1983.

Both firearms and after market barrels have come a long way in those 42 years.

For instance, the .357 Magnum max pressure is 35k PSI.

The much smaller but newer .327 Federal Magnum is rated up to 45k PSI in the same frames such as the GP100.

The_Shadow

Crockett, The thing I like about your UW pull down is that it shows exactly the results as I found despite me not having the sophisticated scale, camera and such you have for these projects.

The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna

crockett

Quote from: The_Shadow on August 14 2025 07:33:35 AM MDTCrockett, The thing I like about your UW pull down is that it shows exactly the results as I found despite me not having the sophisticated scale, camera and such you have for these projects.




Yeah, that goes back to my love (addiction) for commercial / industrial grade tools. When my ex asked for divorce, so she could remarry 5 months later, I could all of the sudden afford all those nice things. Figures.

The real winner is, those tools never nag.

crockett

By the way, that powder photo was done with a cheap USB microscope for 20 bucks, many years ago.

https://www.amazon.com/KEEMIKA-Microscope-50x-1600x-Magnification-Compatible/dp/B0C7S6ZNYT



These days I use a real deal scope, with dedicated scope cam, mainly for my electronics passion, fixing graphics cards on board level etc





The_Shadow

The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna