that idiot should be beaten with his own shotgun for perpetuating this incredibly dangerous and irresponsible advice on birdshot.
this is the result of "across the room" birdshot hit.
(cut and paste link on your own)
this is typical of the results of using this idiot's advice. it results in either the goblin running off which would happen in a pure miss or the the goblin beating your ass and killing you which would happen with a hit or miss.
loading with birdshot just ensures you will NOT stop an attacker. it is the exact same as using an unloaded firearm.
i use 9mm hornady critical duty in my m9A1, hotnady 150grain amax for 308, 62grain ss109 for 556, hornady critical defense for 45acp, buffalo bore 95grain fmj 1150fps for 380acp (pretty close to 9mm 115grain nato), 00buck shotgun, just whatever is available for the ak usually silver bear hp.