Hi Everyone
Didn`t find anything via search....
Rules about Hard target say: Penalty of -20BS for enemies who fire at you when you charge or run. (DH Rulebook Page 116)
Rules also say that if you run opponents get penalty of -20BS when you run. (DH Rulebook Page 192)
So I see two ways to handle the skill:
1: It only gives you the benefit of the -20 BS penalty for your opponents if you charge. And of course you get the same benefit whilst running like anybody else.
2: It grands you -20BS penalty for opponents when you charge and additional -20BS penalty if you run.
I would prefer option 2, otherwise it would be a very weak skill. Especially compared to the cost which is 200xp in most advanced schemes, as far as I know.