Nice shooting! Did you say 80yds? wow, that's some shot. Your CPHP had about 8-9fpe left at that distance which is plenty for a small G-hog and even adult ones.
I got a similarly sized young one 2yrs ago with my 850 .22 which shot CPHP's @ 605-610fps (then, now a litte more power) out of the muzzle but the distance was more like 15yds. I got almost all the G-hogs that summer of '08 with my Diana 36 .177 Springer, which is a 14fpe gun averaging 860 and 905fps with 8.3gr Superdomes and 7.9 CPHP's respectively. All you need is 9-10fpe on impact for a passthrough on most G-hogs, depending on the angle and their size.
In '09 I shot half the G-hogs with the Diana 350 .22 and the rest with the .22 Condor but this is after I shot 12 G-hogs with a 14fpe gun the year before and recovered every one. So I knew how deadly even mid-powered Springers can be. I just like Magnum springers and PCP's too. I don't discriminate

This year I use the .25 Condor now and then, because it costs too much dang $ to just let it sit there

I try to share the hunting duties with all my guns and will switch every couple of months. Speaking of which, the 350 .177 needs some glass now so it can see some action before all the critters are completely gone from my backyard, hehehe.