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Old 01-15-2020, 07:29 PM
5pins 5pins is offline
Join Date: Mar 2000
Location: HOT
Posts: 533
Cor Bon .38 Super 125gr +P JHP in Clear Ballistics Gel.

Test Gun: 1911
Barrel length: 5 inches.
Ammunition: Cor Bon .38 Super 125gr +P JHP.
Test media: 10% Clear Ballistics Gel.
Distance: 10 feet.
Chronograph: Caldwell Ballistic Precision Chronograph G2.
Five shot velocity average: 1290fps
Gel Temperature 70 degrees.

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Old 01-16-2020, 10:27 AM
KCJeep KCJeep is offline
Join Date: May 2016
Posts: 327
Excellent information, thank you. With Corbon's reputation I am surprised at the velocity, nothing notable for a 38 Super, but expansion and penetration was good.

I picked up some 115 Corbons in Super but have not shot them yet. Already have had issues with bullet set back just hand cycling a few of them. They are rated at 1475 fps but given your chrono results on the 125 I highly doubt that is accurate either.

Really appreciate your contributions here!
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Old 01-17-2020, 09:03 AM
AZ Desertrat AZ Desertrat is offline
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Location: Tempe, AZ
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I have two boxes that I have not tried yet....good to know info.
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Old 01-27-2020, 09:15 PM
SuperMan SuperMan is offline
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Join Date: Dec 2002
Location: NH, USA
Age: 67
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That is THE lowest I have ever seen a CorBon 125 run. I've only had two or three boxes as I usually carried the 115s but all mine were in the 1350-1375 range... The 115s were all is the 1460-1495 range...
If you can't deal with reality, reality will deal with you...
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Old 02-01-2020, 01:23 AM
Rock185 Rock185 is offline
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Join Date: Jan 2002
Location: Under the Tonto Rim, Great Southwest
Posts: 3,324
Some years ago, I chronographed the .38 Super 125 grain Corbon in a Kimber Target II with 5" barrel. It averaged 1314 FPS, not that much different than 5pins results. The same day, I tested Corbon 9MM 125 grain in my, identical except for chambering, 9MM Kimber Target II with 5" barrel. The 9MM averaged 1329 FPS. I thought the 9MM Corbon velocity was impressive, the 38 Super, not so much. I chronographed some Corbon 115 grain 9MM in a 5" gun that averaged 1440 FPS. This was all before the new owners took over Corbon, so I don't know what the newest Corbon does.

More recently, the Underwood 38S 125 averaged between 1265 FPS and 1322 FPS, tested in three different manufactuer's 5" guns. A bit short of the advertised 1350 FPS. The SIG V-Crown 125 grain, advertised as 1230 FPS, actually did average between 1223 and 1267 FPS in the same three 5" guns. Obviously the Corbon, Underwood and SIG V-Crown 38S ammo was loaded on the conservative side, likely to ensure it would not "Ka-Boom", even in a pistol that Bubba had gone overboard throating with his trusty Dremel tool
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