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Discussion Starter #1
I found the following over on another forum in a thread about using the Fiveseven for CCW, someone stated he thought it was huge and made his HK USP 40 look tiny. The numbers really put things in true perspective if you ask me especially when you consider the nearly identical size, 20% lighter weight, 55% more capacity, etc, etc, etc, etc.



Just for fun lets compare your USP40 to the Fiveseven…

Weight
USP40 = 1.66
FN-FS = 1.36
(-0.30)

Height
USP40 = 5.35
FN-FS = 5.39
(+0.04)

Width
USP40 = 1.26
FN-FS = 1.54
(+0.28 )

Length
USP40 = 7.64
FN-FS = 8.19
(+0.55)

Capacity
USP40 = 13
FN-FS = 20
(+7)

Ballistics
165gr 1200fps 527ft/lb
28gr 2250fps 315ft/lb

Jello Penetration (bare)
.40 ~9-14"
5.7 ~9-14"

Jello Penetration (clothed)
.40 ~12-16+"
5.7 ~9-14"

Recoil
.40/165gr = 1.00lb/sec, 19.45ft/sec, 9.75ft/lb
_5.7/28gr = 0.39lb/sec, _9.14ft/sec, 1.76ft/lb

Ammunition Cost
40s&w $0.30-1.25
5.7x28 $0.36-0.75

Pistol Cost
USP40 ~$710
FN-FS ~$855
 

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good comparison!!
 

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Why does the .40 have a higher penetration with "clothed" jello?
 

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Discussion Starter #4
djv38 said:
Why does the .40 have a higher penetration with "clothed" jello?
The barrier material quite often plugs up the bullet cavity turning it into a quasi FMJ and thus defeating the purpose of using an HP design, this is one of the aspects people often forget (or simply don't know) about using designer bullets. This is one of the nice aspects of 5.7 in that over-penetration is greatly reduced because it does not rely on expansion to create its wound cavity.
 

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I hate my Five-seveNs im gonna get rid of them :twisted: :roll:
 

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Farmer Ted said:
djv38 said:
Why does the .40 have a higher penetration with "clothed" jello?
The barrier material quite often plugs up the bullet cavity turning it into a quasi FMJ and thus defeating the purpose of using an HP design, this is one of the aspects people often forget (or simply don't know) about using designer bullets. This is one of the nice aspects of 5.7 in that over-penetration is greatly reduced because it does not rely on expansion to create its wound cavity.
Didn't know that. I put a few Speer Gold Dot hollow points into a cardboard box full of sand and got excellent expansion even though the hollowpoint still had cardboard stuck in it. It may have been because of the sand though. I suppose desity affects how well it performs. It also never said it was a hollow point and I kinda assumed it was an FMJ.
 
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