Corbon DPX 9mm, .40 S&W, .45 ACP duty ammo vs. Fed HST as control

[DocGKR]

9mm Corbon 115 gr +P Barnes XPB JHP; ave vel=1229 fps (G19); gel cal= 9.5cm@593fps
BG: pen=14.8", RD=0.54", RL=0.48", RW=115.1gr
4LD: pen=15.1", RD=0.54", RL=0.49", RW=115.4gr

9mm Fed 147 gr HST JHP; ave vel=997 fps (G19)
BG: pen=14.6", RD=0.61", RL=0.39", RW=147.1gr
4LD: pen=15.6", RD=0.56", RL=0.53", RW=145.5gr

115 gr +P XPB vs. 147 gr HST--BG top/4LD bottom:


.40 S&W Corbon 140 gr Barnes XPB JHP; ave vel=1207 fps (S&W 4006); gel cal=9.5cm@590fps
BG: pen=12.6", RD=0.64", RL=0.49", RW=140.1gr
4LD: pen=11.5", RD=0.64", RL=0.49", RW=141.1gr

.40 S&W Fed 180 gr HST JHP; ave vel=959 fps (S&W 4006)
BG: pen=14.0", RD=0.70", RL=0.43", RW=181.2gr
4LD: pen=15.0", RD=0.56", RL=0.52", RW=180.7gr

140 gr XPB vs. 180 gr HST--BG top/4LD bottom:


.45 ACP Corbon 160 gr Barnes XPB JHP; ave vel=1101 fps (1911); gel cal=9.0cm@576fps
BG: pen=13.9" RD=0.66", RL=0.43", RW=159.7gr
4LD: pen=13.2", RD=0.64", RL=0.46", RW=160.1gr

.45 ACP Corbon 185 gr +P Barnes XPB JHP; ave vel=1097 fps (1911); gel cal=9.0cm@576fps
BG: pen=16.8" RD=0.65", RL=0.51", RW=185.3gr
4LD: pen=16.5", RD=0.66", RL=0.51", RW=185.9gr

.45 ACP Fed 230 gr +P HST JHP; ave vel=996 fps (1911)
BG: pen=12.2", RD=0.85", RL=0.41", RW=230.5gr
4LD: pen=14.6", RD=0.69", RL=0.46", RW=230.7gr

185 gr +P XPB vs. 230 gr +P HST--BG top/4LD bottom:


Like the HST loads, the Barnes XPB bullets performed very well in both bare gel and 4 layer denim; the only area of concern was a propensity for the Barnes XPB bullets to have difficulties with auto windshield intermediate barriers. The Barnes bullets would frequently begin to yaw off course after only a few centimeters of travel in gel and would often veer to 90 degrees and exit the gel blocks in under 10 cm--this phenomena requires further study.

[Glock17JHP]

I think I like the Federal 9mm 147 grain HST performance better from a Glock 19 than a Glock 17...

[Zhukov]

Great data - thanks Doc!

Looks like I need to update my FAQ over on Arfcom with some new data...

[DocGKR]

"I think I like the Federal 9mm 147 grain HST performance better from a Glock 19 than a Glock 17..."

After accounting for lot to lot variations, the terminal performance is identical between a G19 and G17.

[Glock17JHP]

The 9mm HST went 14.6 inches in BG in the Glock 19...
I seem to recall about 12.5 inches in a Glock 17...
I prefer 14.6 over 12.5 inches...

I use RA9T for this reason specifically... I like BG to be at least 13-14 inches in my Glock 17...

Am I too picky???

[DocGKR]

Yes...you will see that much variation lot-to-lot, even when fired from the same pistol.

[ElyasWolff]

[b]

Like the HST loads, the Barnes XPB bullets performed very well in both bare gel and 4 layer denim; the only area of concern was a propensity for the Barnes XPB bullets to have difficulties with auto windshield intermediate barriers. The Barnes bullets would frequently begin to yaw off course after only a few centimeters of travel in gel and would often veer to 90 degrees and exit the gel blocks in under 10 cm--this phenomena requires further study.

Is this phenomenon limited to the XPB, or does it affect all Barnes x-bullets. For example, will a 62 grain .224 X-Bullet also deviate off course with regularity?

[PA PATRIOT]

I wonder if the expanding Pedals of the Barnes XPB JHP are compressing back at a different rate, or maybe one or two pedals open before the others creating a drag which tilts the bullet throwing it off course.

Just a uneducated guess by a Greenhorn.

[DocGKR]

"I wonder if the expanding Pedals of the Barnes XPB JHP are compressing back at a different rate, or maybe one or two pedals open before the others creating a drag which tilts the bullet throwing it off course."

Bingo!

Happens primarily to the XPB's--the TSX's generally end up being wad-cutters, as discussed earlier: https://www.m4carbine.net/showthread.php?t=26127&page=2

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The 185 gr XPB might work better as a standard pressure--one would have to test to determine that.

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I didn't make the pick, both work fine:

.45 ACP Fed 230 gr HST JHP; ave vel=906 fps (1911)
BG: pen=14.2", RD=0.76", RL=0.51", RW=230.4gr
4LD: pen=14.2", RD=0.73", RL=0.46", RW=230.6gr

.45 ACP Fed 230 gr +P HST JHP; ave vel=996 fps (1911)
BG: pen=12.2", RD=0.85", RL=0.41", RW=230.5gr
4LD: pen=14.6", RD=0.69", RL=0.46", RW=230.7gr

[Burt Gummer]

...the only area of concern was a propensity for the Barnes XPB bullets to have difficulties with auto windshield intermediate barriers. The Barnes bullets would frequently begin to yaw off course after only a few centimeters of travel in gel and would often veer to 90 degrees and exit the gel blocks in under 10 cm--this phenomena requires further study.

One year later, has the DPX/windshield phenomena been addressed? If not, does this mean DPX fails the FBI standards?