Bill, I got a question for you.
In Iridium Lite V1, the attacker is required to roll 1d20 + Weapon Use skill + Aptitude over the defense of his opponent. Does "Weapon use skill" means Weapon Use ranks + Stat? If so it looks really easy to hit someone.
Example stats :
Opponent defense = Stat 7 + Stat 7 = 14
Attacker Weapons Use = Stat 7 + Skill 3 + Apt 2 = 12
The attacker has to roll 2 or more to hit... Easy. If the Stat is not included, it means he has to roll 9 or more.
So what the right way?
May have gotten a bit muddledd there. Here is the pertinent parts from the IL SR.
Each person rolls a d20 and adds their Weapon Use Skill for the weapon used (i.e. Pistol Use for Pistols) and their Fighter Aptitude.
So, the max end would be Weapon Use Skill 5 + Fighter Aptitude 6 for a total of +11. That is the high end. DEF is STR + AGL and high end here would be 20. Thus, you have to roll a 9 or about a 55% chance to hit on a d20.
Now, if you start looking at I am average shlub we go somewhere different. Say all 5s for stats. Say, a 3 in WU and 3 in FA. You get a +6 to hit a 10 or about a 80% to hit on a d20.
In actual play, most folks try for a high defense and you do not often get 10s. 15 is more like it. FA may go as high as 6 but that means no aptitude in anything else. WU can get that high but again, you are burning up a lot of your development points then.