I'd like to observe that using the values for Laser Sniper (Hit) gives me my Grenadier (Hit) standing to within 0.003 levels. I have no primary skills in the profession, so here's what I can propose:
Agility *20 60%
Courage 3%
Dexterity 3%
Perception 2%
Serendipity 1%
Aim 4%
Combat Reflexes 3%
Coolness 4%
Marksmanship 8%
Weapons Handling 8%
Unknown: (Edit: these should be correct, but need testing)
Combat Sense 5%
Commando 3%
Support Weapon Systems 39%
Explosive Projectile Weaponry Technology 14%
If a couple people that have used a support weapon could post their skills or test out these percentages to verify, i think we can bag this one quickly.
Grenadier (Dmg) doesn't yield so easily to such childish cheats, though. I'll fiddle around with some possibilities.
Edit:
With Witte's help to get professions from wiki, i ran a script to check these percentages. Of all the avatars with information on the wiki, 57 had sufficient data given to pass the sanity test (skills contribute to a
Laser Sniper (Hit) standing within +- 0.02 levels of the professional standing listed).
55 of those 57 (Thank you to all those who help maintain wiki) also pass the same test for the calculated level of
Grenadier (Hit) using these numbers, and two fail. The two who failed were Angelica Coffee Lastrome and Vintage Yquem Port. I checked on the wiki and neither of them included their Explosive Projectile Weapon Technology skill level, but probably have some due to having Support Weapon Systems skills, so the explanation for those two failures is clear. Of those passing both tests, two had
Support Weapons Systems skills above 5, and
Commando levels above 5, thus possessing all of the contributing skills:
Jake BD Janson
Petrus PM Molinos
This is not a very closely-monitored test, but it seems good enough to state tentatively that all the contributions above are as listed.
If neomaven or Stryker or someone else with all those skills could test the results or send me the relevant skill levels plus their pro standing, we can conclude this one.
Edit 2: Grenadier (Dmg)
I tried some Monte Carlo/metropolis for the (Dmg), but there are too many solutions that give passably good fits with the numbers available. No one that meets the criteria now on there has kill strike. It would be really nice if a couple more ubers would upload a full NRF dump to wiki... (Dmg) won't be cracked until we know at least for sure which skills are used, and ideally a few percentages for sure.