I flew the Tempest yesterday evening, AFTER getting the in-game notification of the fix.
Although I couldn’t do extensive tests due to very little air opposition, I didn’t notice any significant difference.
Player controlled planes (Bf.110) did go down, albeit with some inconsistency (one tanked several hits before falling, another one got completely engulfed in flames with a quick burst).
AI plane (Ju52) took more than 400 rounds, aimed at engines and tail section, before going down.
A fair few more flights now, and can confirm, Hispanos are still incredibly underwhelming for what should be the most powerful 20mm aircraft armament in the game. I got a couple of kills on 110s with the Tempest that seemed ok, but generally even with good angles and concentrating fire on wing roots/engines of AI planes it was taking almost all of my ammo to down a bomber. Likewise the Spitfire Vc - still better off using the Hurricane, more reliable kills with rifle calibre machine guns…
And while I’m here, I’ll add my periodic plea to fix the Hurricane IID guns and give them some penetration. Any penetration at all…
I tested the Beaufighter and Spitfire VC with Hispanos in practice, shooting at tanks.
Only one AB kill after several passes with both planes.
Then I took the P38 with AN/M2 and killed several ABs and Tigers in just a few passes.
…Are we even supposed to destroy Tigers with 20mm? 
I hope you meant Pumas
The killfeed said something like Tiger III, Panzer IV (or whatever number), those kind of tanks.
Finally fixed!
Tempest is about to become my favorite fighter-bomber now.
Feels extremely good and Hispano MK.V is now powerful and deadly enough to take down bombers.
Yeah ive been using the tempest and the spitfire VC for the last week now. Very potent. 2 of the nicest flight models and weapons to match.
Also had a funny moment where AA blew of my wing half way, and could still fly lol (tempest). Completed a rearm and another bombing run (with 1 bomb because wing was gone lol)
