With new weapons like the Two-Step Goodbye, which has a 4x critical multiplier, is it possible to get 100% critical chance? I realize mathematically it is, when you factor in Light Touch, Finesse, Elite Riot Gear, 1st Recon Beret, etc., but is there a maximum attainable critical chance (like the maximum 85% DR for armor in Fallout 3). Is there a critical percentage ceiling, or can you go all the way up to (and beyond) the 100% mark?

There is no theoretical limit to crit chance.

I have 10 Luck + 3% from Built to Destroy + 5% from Elite Riot Gear and + 5% from Finesse:

That means I have a total base Critical of 23%:

That means I have 100% chance to score a critical hit with Rat Slayer.

And I'm almost level 50 and I have neutral Karma so I'm gonna take the level 50 perk that gives me extra 50% critical hit damage. And I have Better Criticals.

So that means Rat Slayer and any other weapons will do 100% + Critical damage.

Oh no, I get the math. I realize you can have 100% in theory, I just wanted to confirm that it is in fact possible in practice...that people are actually experiencing 100% critical hits with a given weapon.

I think you can go all the way up to 100%.

Going over 100% for crit chance is kinda silly because 100% mean you will always crit. Anything more means you are more likely to always crit? That doesn't make sense. "I am 10% more likely to crit 100% of the time!" Yeah, and 60% of the time I'm right every time.

Ulysses' Duster (5%)
10 Luck (10%)
Finesse (5%)
Built to Destroy (3%)
1st Recon Beret (5%)

28% crit total.

Light touch +5% additional crit. (is not multiplied, only added)

100% crit on Two-Step
75% crit on Lucky (True Police Stories makes it 100%)
61% crit on x2 weaponry (True Police Stories makes it 81%)
33% crit on x1 weaponry