Editing Warhammer 40,000/8th Edition Tactics (section)

====Hitting====
By and large, this will be a WS or BS value. Regardless of the name of the stat, here called "AS" for "Accuracy Skill". 

The odds of hitting is: (7-AS-modifier)/6

*An ability to re-roll will multiply this value by (6+x)/6, where x is the number of facings on a hit roll you can re-roll, so if you re-roll 1s x is 1, re-roll 1s, 2s, 3s and 4s x is 4.
*Re-rolling all failed hits means x=7-AS, note that modifiers do not change the effect of re-rolling all failed hits, this is only affected by the AS. 
*Abaddon's ability to re-roll hit rolls even if they hit mean x=7-AS-modifier instead.