Marines' explosive bonus has half the promised effect on explosive turrets
Placed by Vegas, IAF High Velocity Sentry Cannon deals its base 60 damage, as predicted by the extended weapon stats view. As Jaeger, the stats display 60+40 damage for 100 total, but in-game it only deals 80 damage, unable to one-shot a 88 HP Drone on Brutal solo. Crash & Sarge: 60+20 damage told, 70 dealt.
Ideally I'd also want the bonus' effectiveness raised to a point where at least Jaeger's explosive sentry can one-shot 104 HP Drones on a direct hit on Brutal with 4+ players (it doesn't need to one-hit an entire horde though). Then again, those direct hits aren't all that easy to achieve...
Judging by https://steamcommunity.com/sharedfiles/filedetails/?id=1375321111 (Ctrl+F "Sentries") and https://steamcommunity.com/app/563560/discussions/2/1698294337792286677/?ctp=5#c3183485686827907114, explosive turrets' damage has always been +5 per skillpoint in explosives. Perhaps it's only the new descriptions that are wrong? (Or were they always wrong? I didn't check until a week after the descriptions update.)