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What 9mm round is the best for barrier penetration such as car doors, wood, auto glass? Would a +p round be any more beneficial?


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Posts: 4364 | Location: Pittsburgh, PA, USA | Registered: February 27, 2001Reply With QuoteReport This Post
and this little pig said:
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Don't have any specific data or source reflecting this opinion, but I would say a 147gr bullet (+P) would be preferable.
 
Posts: 3021 | Registered: February 07, 2003Reply With QuoteReport This Post
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quote:
Originally posted by odin:
Don't have any specific data or source reflecting this opinion, but I would say a 147gr bullet (+P) would be preferable.


Hollow point, ball?


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Posts: 4364 | Location: Pittsburgh, PA, USA | Registered: February 27, 2001Reply With QuoteReport This Post
Freethinker
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Experiments have demonstrated that hollow point handgun bullets perforate windshield glass better than FMJ. The former tend to deform to the glass surface rather than glancing off as can sometimes (not always, of course) FMJ.

It’s an interesting commentary on the spread of the idiotic “all handgun cartridges perform the same” notion that we would even wonder for a second if more power was better for penetration, but yes, +P would be better. That assumes, of course, that the +P rating actually means more power; it doesn’t always. A couple of loads in which it does are the Gold Dot 124 grain +P and the Winchester Ranger 127 grain +P+ load.

I haven’t performed any windshield or auto sheet metal penetration experiments with 9mm, but in 357 SIG, Gold Dot bullets went through windshields far better with much less point of aim to point of impact deviation than 45 ACP FMJ. I suspect that Gold Dot or another bonded bullet design would be best in 9mm as well. I would look at kinetic energy figures, but I would probably avoid 115 grain loads for the purpose.

And FWIW, when a full power 357 SIG load from a 4.4" P226 does not perforate auto sheet metal very well, no 9mm load will do any better.




“The fundamental cause of trouble in the world today is that the stupid are cocksure while the intelligent are full of doubt.”
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Posts: 42046 | Location: 10,150 Feet Above Sea Level in Colorado | Registered: April 04, 2002Reply With QuoteReport This Post
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I'd check out the ballistic data on the ATK LE website. The FBI protocol tests might be useful, particularly the auto glass and sheet metal tests.. You can also look up Dr Roberts comments on line.
 
Posts: 4302 | Location: Where ever Uncle Sam Sends Me | Registered: March 05, 2007Reply With QuoteReport This Post
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quote:
Originally posted by sigfreund:
Experiments have demonstrated that hollow point handgun bullets perforate windshield glass better than FMJ. The former tend to deform to the glass surface rather than glancing off as can sometimes (not always, of course) FMJ.

It’s an interesting commentary on the spread of the idiotic “all handgun cartridges perform the same” notion that we would even wonder for a second if more power was better for penetration, but yes, +P would be better. That assumes, of course, that the +P rating actually means more power; it doesn’t always. A couple of loads in which it does are the Gold Dot 124 grain +P and the Winchester Ranger 127 grain +P+ load.

I haven’t performed any windshield or auto sheet metal penetration experiments with 9mm, but in 357 SIG, Gold Dot bullets went through windshields far better with much less point of aim to point of impact deviation than 45 ACP FMJ. I suspect that Gold Dot or another bonded bullet design would be best in 9mm as well. I would look at kinetic energy figures, but I would probably avoid 115 grain loads for the purpose.

And FWIW, when a full power 357 SIG load from a 4.4" P226 does not perforate auto sheet metal very well, no 9mm load will do any better.


Referencing Fort Scott Munitions 9mm Spun copper cartridges with patented Tumble Upon Impact bullet. Looks like it took a rifle plate to stop penetration on body armor. See video > https://www.youtube.com/watch?v=g0sSr5EUW7w Windshield and auto sheet metal tests were not found. As per the videos, it did not appear excessive penetration in 10% box gel tests. I also do not place God’s Truth in YouTube videos. 


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Posts: 1381 | Location: Denver Area Colorado | Registered: December 14, 2008Reply With QuoteReport This Post
Fool for the City
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I thought that's what UZI black tips were for. Wink


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Posts: 5045 | Location: Pottstown, PA | Registered: April 26, 2002Reply With QuoteReport This Post
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