9 mm Corbon 100 gr +P PowerBall 1555 f/s from G17
BG: pen=10.9”, RD=0.60”, RW=93.9gr
4 layer denim: pen=11.4”, RD=0.58”, RW=97.5gr
The mighty 4.7” of pen after the auto windshield was not comforting…
.40 S&W Corbon 135 gr Powerball from S&W 4006
BG: vel=1362 f/s, pen=11.6”, RD=0.65”, RW=131.4gr
4 layer denim: vel=1359 f/s, pen=12.1”, RD=0.65”, RW=131.9gr
auto windshield: vel=1365 f/s, pen=7.9”, RD=0.61”, RW=103.6gr
.45 ACP Corbon 165 gr +P Powerball from 1911
BG: vel=1230 f/s, pen=12.1”, RD=0.70”, RW=158.8gr
4 layer denim: vel=1267 f/s, pen=11.8”, RD=0.66”, RW=159.7gr
auto windshield: vel=1251 f/s, pen=5.5”, RD=0.73”, RW=143.5gr
The frequent core-jacket separations and rounded leading edges of the PB loads are a concern, as is their poor terminal performance after intermediate barrier penetration. We were frankly unimpressed with these loads. If you have to use Corbon handgun loads, stick with their DPX loadings of the superb Barnes XPB all copper bullets.
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