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View Full Version : Informal Test: Corbon .380 DPX Ammunition/Bersa Thunder Pistol


Stephen A. Camp
September 21, 2005, 08:48 PM
Hello. I recently received some of this ammunition from Corbon. It is a standard pressure load, something appreciated by many shooters who prefer not loading their handguns with anything +P rated.

http://i5.photobucket.com/albums/y171/hipowersandhandguns/380DPXFedammo1.jpg
The 80-gr. DPX is centered between Federal Classic 90-gr. JHP on the left and Federal 95-gr. FMJ on the right.

It uses a homogeneous copper alloy bullet with a large hollow cavity; there is no jacket and the bullet is designed to perform to the FBI protocol of at least 12" penetration. Not having access to ballistic gelatin nor a constant-temperature laboratory, I do not know how well it will meet such testing, but am extremely hopeful after my own "backyard ballistics" informal testing.

http://i5.photobucket.com/albums/y171/hipowersandhandguns/380DPXexp1.jpg
This expanded DPX bullet was fired into water using a Bersa Thunder pistol having a 3.5" barrel. Expansion was remarkably consistent whether fired into water or super-saturated newsprint.

Ten shots were fired approximately ten feet from the chronograph screens and the average velocity from my Bersa Thunder was 1067 ft/sec, slightly higher than Corbon's nominally-listed 1050 ft/sec.

When fired into both water and super-saturated newsprint, expansion was very consistant and uniform. These bullets did not fragment and I could find no loss in bullet weight from recovered bullets.

Accuracy was very good and these cartridges ran smoothly in the Bersa. There was no "hesitation" at all in feeding and ejection was positive. There were zero malfunctions.

http://i5.photobucket.com/albums/y171/hipowersandhandguns/380DPX15ydtargetbersa1.jpg
Using a rest and a two-hand hold from a seated position, this five-shot group was about average for the DPX and Bersa at 15 yards. Certainly this is farther than most might deem necessary for this type/caliber firearm, but if it is satisfactory at this distance, it should be fine closer in as well. There was no evidence whatsoever of anything other than bullets impacting the target that were stabile in flight; no tipping or out-of-round holes.

Only forty shots were fired and that's not a definitive test for reliability at all, but it does appear that this round should feed in most .380 autoloaders.

If this ammunition might be useful to you, please contact Corbon via their website at www.corbon.com for pricing and availability. If it is not on the market yet, it should be very soon.

For those interested in a more detailed report, follow the link below:

http://www.hipowersandhandguns.com/Bersa%20Thunder.htm


Best.

BobK
September 21, 2005, 11:13 PM
Dpx is some impressive stuff. I carry it in 45acp and 9mm. Waiting for the 32acp to come out. Thanks Steven.

Dave R
September 21, 2005, 11:20 PM
This looks like it might be a great carry load for the Kel-Tec P-3AT. I wish someone who had one could try it. Guess I'll have to e-mail Cor-Bon.

Marcus
September 21, 2005, 11:25 PM
We got to try some of the new DPX loads in ballistic gel at the last Pa. shoot. If I remember right the .380 DPX was fired from Jody Hudson`s Kel Tec P3AT. The blocks were covered by 4 layers of denim. Expansion was very good,similar to the pic you posted and penetration was around 9" if memory serves. Darn good for a .380. All the DPX loads were very impressive,matching and usually exceeding the performance of the other loads we tried. Marcus

TeamCORBON
September 22, 2005, 06:23 AM
From Mr. Hudson's P11, we shot the 9mm DPX load. It expanded nicely and penetrated 16" in the denim clad gelatin block.