While there are already rules for shotguns, six shooters are different from flintlocks. While boots of speed will give a character a distinct advantage in duels, bad guys will be cheating too. Time travelers will want to pick up local gear, basically a silver piece is going to be treated as a silver dollar. The strange markings will be assumed to be from some obscure european country. Assayers have ways of ascertaining metal content.
Your mechanic, probably powered by grit, seems legit.
I've always felt that while pathfinder is a great game system and has a good set of base rules, that it doesn't always work for different genres. IMO, if you want to play a different genre, find a game system built for it. Boot Hill is a good one for Westerns.
How do your daily dex-based points interact with other Pools like Grit and Panache? Or in place systems like Initiative?
There are Rogue Talents like Snap Shot, and abilities baked into classes/archetypes specifically to help those characters go first when going first matters most. It seems unfair to trivialize player investment, so be careful with how easily accessed a "draw 1st" mechanic is to everyone. And make sure enemy NPC's start each day with the same pool of points that they can spend to draw first.
And at this point, it's almost just like Initiative... it's just as big of a gamble to see who has the most points they are willing to spend on this duel (probably all you have left for today) as it is rolling a D20 for Initiative.
There is literally a Gunslinger Deed called Gunslinger's Initiative. Lol. It's almost as if Pathfinder wanted them duel.
And do not discredit or discount melee weapons simply because you are playing "guns everywhere". Remember that bows and swords and horse-drawn buggies were still used in WW2. People will use what is available, and given the opportunity, they will likely become quite proficient with whatever they have. Ninjas were once townsfolk with garden tools. I absolutely wouldn't make melee rare, by any means.
And do not discredit or discount melee weapons simply because you are playing "guns everywhere". Remember that bows and swords and horse-drawn buggies were still used in WW2. People will use what is available, and given the opportunity, they will likely become quite proficient with whatever they have. Ninjas were once townsfolk with garden tools. I absolutely wouldn't make melee rare, by any means.
To add on your point, if advanced firearm are being used, melee weaponry really starts to get outshined. Advanced firearm can fire multiple shot and they hit on touch AC within their first five range increament. Which means, their's not need to limit access to melee weapon more than it make sense for the world. For example, smith might not actually make greatsword and spear anymore as it's a waste of time and money.
As for my advice with the system, i feel like it could work pretty well with E6 rule as western tend to be kinda gritty and ''realistic''. Unless of course you want something like Western&Dragons with Cowboy shooting dragons out of the sky.
If you're not familliar with E6, it's basically;
- Pathfinder, but no one can raise above 6th level.
- Each time a character would gain enough xp to go from 6th level to 7th level, they gain an ''epic level'' which grant an extra feat.
- Some spell and abilities accessible at higher level can be bought as a feat, or feat chain with the DM permission.
I've been playing E6 for a few years now and it pretty much solved all problems i've ever had with Pathfinder, which is higher level play power level. (Not that it's bad, it's just not my thing)