See the Galaxy They Say - Should Have Joined the Navy
Ballistic Skill Tests made to hit a target within three metres are Easy (+30). Note that this bonus does not apply when shooting targets that are engaged in melee combat with the character.
This bonus does not apply when the attacker and the target are engaged in melee combat with each other. For weapons with a short range of less than 3 metres, point blank range is 1 meter less than the weapon’s short range