Author Topic: MegaStar & Witness 10mm  (Read 225 times)

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LESchwartz

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MegaStar & Witness 10mm
« on: March 10, 2025, 04:47:33 PM »
My dad had a NIB Star MegaStar 10mm which I sold off for him about 20 years ago.  At the time, most 10mm loads were being downloaded to 40S&W levels, and 10mm pistols looked like they were on their last legs at the time, so I didn't think to keep it.  Silly me.

These days 10mm seems to be making a resurgence for use as a sidearm in the woods.  I got back in the game by purchasing an XDM earlier this year.  However, I really wanted to land a high capacity, steel frame pistol built for a steady diet of full power 10mm loads.  I considered one of the many 1911s, but the limited single stack capacity is a downer -- as is the rumors that they will shoot themselves apart on the hottest loads.  Similar durability stories abound for the Tanfoglio / EAA Witness, though the newer large frame models are supposed to have fixed this issue.  Sigs are expensive and single stacks at that.

I just made a purchase on a used MegaStar 10mm.  It's inbound as we speak and I have high hopes . . .

Larry

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« Last Edit: March 15, 2025, 10:51:41 AM by LESchwartz »
"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts."--Bertrand Russell

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LESchwartz

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Re: MegaStar 10mm
« Reply #1 on: March 12, 2025, 06:27:19 PM »
Just for grins, here's some links to some 10mm threads we've had over the past years:

"10mm Bear Loads":  https://www.sksboards.com/smf/index.php?topic=153432.0
"40 versus 10":  https://www.sksboards.com/smf/index.php?topic=153130.0
"Tell me about 10mm":  https://www.sksboards.com/smf/index.php?topic=81062.0
"The 10mm Debate":  https://www.sksboards.com/smf/index.php?topic=77692.0

Information page about the MegaStar:  http://www.star-firearms.com/firearms/guns/megastar/index.shtml

Larry
« Last Edit: March 13, 2025, 12:52:04 PM by LESchwartz »
"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts."--Bertrand Russell

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LESchwartz

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Re: MegaStar & Witness 10mm
« Reply #2 on: March 13, 2025, 08:55:26 PM »
Similar durability stories abound for the Tanfoglio / EAA Witness, though the newer large frame models are supposed to have fixed this issue.

I found a large frame witness in 10mm at Bass Pro and decided to pick it up!  I owned a small frame model back in the day, but sold it when I sold off my dad's megastar.

I have high hopes that I will be happy with one of the three full size 10mm pistols I now own.  In any case, the steel pistols should be able to take a steady diet of full power loads.  In addition, the extra weight should help tame the full power recoil.  As I mentioned above, I'm not so sure the same can be said about 10mm 1911s or other competition oriented steel 10mm pistols I'm seeing these days.

As for the polymer pistols, I have even less confidence in their durability with full power loads over time -- and that includes the XDM I already own.  And as for Glocks, I didn't like the idea of the unsupported chamber or the need for an aftermarket barrel for use with hard cast.  My thinking is that the current crop of "tactical" 10mm pistols are in no way capable of handling a stead diet of FULL power 10mm loads -- despite what the Glock fanboys may assert.

Larry

(click to enlarge)







« Last Edit: March 16, 2025, 11:57:45 AM by LESchwartz »
"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts."--Bertrand Russell

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LESchwartz

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Re: MegaStar & Witness 10mm
« Reply #3 on: March 16, 2025, 02:01:20 PM »
Editorial:

Here's a great video from the late Paul Harrel about 10 versus 40 ammo:  https://www.youtube.com/watch?v=ydwXJ2yhfnU.

Note that in the video, the conclusion is that some 10mm loads barely edge out .40 S&W -- even in the premium brands.  In fact, muzzle energies can range from the mid 400s to the mid 700s.  Quite a range.  For brands comparisons, see:  https://ammo.com/ballistics/10mm-ballistics.

So what's the conclusion?  If the intent is to feed your 10mm pistol a steady diet of lower power loads, most any pistol will do.  However, if your intent is to feed your 10mm pistol a steady diet of "full power" loads, you'll have to be allot more particular about your pistol.  So will your polymer frame (or even 1911-style) pistols take a steady diet of 10mm loads?  Certainly they will, especially if those loads are of the "downloaded" variety.  Will they take a steady diet of full power loads?  Well, now your in YMMV territory.

This is where I'm going to torque off a bunch of Glock / 1911 / P320 fanboys:  Such pistols might shoot themselves apart on a steady diet full power loads -- in fact, there are enough reports from around the web to throw suspicion on all but the stoutest of 10mm pistols.  For example of the three 10mm handguns I own, I am only confident in the Megastar's ability to handle a lifetime of full power loads.

As always, YMMV . . .

Larry
"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts."--Bertrand Russell

For more information see my SKS FAQ:  https://victorinc.com/SKS-FAQ.html

LESchwartz

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Re: MegaStar & Witness 10mm
« Reply #4 on: Today at 11:24:43 AM »
 . . . it's all coming back to me now and I'm starting to remember why I sold off my small frame 10mm Witness all those years ago . . .

It turns out the issue is the way the guide rod connects into the frame.  The lack of metal at this point can cause battering and eventual failure of the frame.  However in the years since, Henning has started selling an improved guide rod that distributes the force across a large area and prevents full power loads from battering the frame.  I'm kind of surprised that in the interviening 20 years Tanfoglio didn't just update the guide rod when they updated the 10mm frame size.  Oh well, $40 for a new guide rod wasn't that bad . . . I was already ordering some heavier Wolfe recoil springs anyway to play around with.

To see exactly what I'm talking about, see the photos and video linked below.

Larry

Video (see 4:35 to about 7:00):  https://www.youtube.com/watch?v=UJ7vFFB3rHY

« Last Edit: Today at 11:56:37 AM by LESchwartz »
"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts."--Bertrand Russell

For more information see my SKS FAQ:  https://victorinc.com/SKS-FAQ.html