10mm ? What was it originally loaded to

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Hey Jerkface,

The 1006 is listed as 2.4 pounds, and the FBI's chosen 1076 is something less than the 1006 since it is more than a half inch shorter overall. The Megastar is listed as a whopping 3.1 pounds empty. When you put 9 rounds in the 1006 and 15 rounds in the Megastar, the difference in weight is more significant. The heavyweight Megastar really makes a difference in controlling recoil. Everyone who ever shot my Megastar for the first time was quite surprised by the mild recoil the Megastar produced with full loads. Everyone expected the recoil of a 1911 45 auto, but they were surprised when they experienced the milder recoil from the Megastar that was shooting a more powerful round than the 45 Auto.

It really was a great 10MM auto for those who could handle the overall size and weight of the Megastar. I should also mention the big double stack handle is also big, and many folks said it was too big for their hand. It fit my hand very well, and I would say my hand is certainly not big. My hand is too small to palm a basketball, so I would not call it "big."

Again, it is a shame the Megastar did not succeed in sales and was discontinued. I think the political attitude of the Clinton Administration probably contributed to the failure of the Megastar.

Best wishes,
Dave Wile
 
ljnowell said:
Only if you are cherry picking loads. Its more like 357 mag, and even that can beat it our of a same length barrel. Plenty of data for 180gr 357s at 1400+ fps.

Yes there is and like Hodgdon data those numbers are generated from a 10 inch barrel. That extra 5 inches is where the extra velocity comes from.

Hodgdon tested it's 10mm loads in a 5 inch barrel they list a Max velocity with 180gr bullet at 1287fps. Run this through QL with a comparable 10 inch barrel and the velocity increases to 1436fps.

Calculated the other way. Hodgdon lists a max velocity of 1422fps with 180gr bullet in a 10 inch 357 Magnum. Drop that barrel length down to 5 inches and the velocity is reduced to 1209fps.
 
Nothing like 10mm threads. I load for the 10mm and others too, and it's got it's positive aspects, but you know it's getting deep when people seriously compare it to a .41 Mag or .44 Mag. It is very similar to .357 Magnum ballistics, it's kind of like a .357 Mag using a .400" bullet.

When the 10mm can shoot a 250gr @ 1500 fps then it will be like a .41 Magnum, it cannot so it's not. A .44 is more powerful than that so comparing the 10mm to the .44 Mag is only what fanatics do.

You hardly hear it for those comparing it to a magnum class revolver, but it is much closer to the .40 S&W performance wise. It shoots the same size and weight bullets as the .40, and it will shoot them a little faster if they're both loaded to the same pressures using the same barrel length. Good cartridge, just a wee bit over hyped.
Ouch...but the man speaks the truth. Some of us do get a little emotional when we talk about our much beloved and usually misunderstood 10mm. Don't judge us too harshly!

I wish the .41 magnum was more prevalent than it is now. What a great caliber. While I could technically carry my 10mm with 200 grain hardcast for dangerous game, I agree the .41 magnum would be preferable.

In regards to the 10mm vs. .357, the 10mm edges it out on all fronts that I've seen...but only by a small margin when properly loaded. My main Underwood loads for these calibers are as follows:

10mm 135 grain Nosler JHP -1600 FPS
.357 magnum 125 grain Gold Dot Bonded HP - 1600 FPS
 
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Ive enjoyed this thread. You 10mm folks are an interesting lot. And I think I mean that in a good way:)
 
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