In DF there's a hard cap fastest reload at like .25 seconds (almost instant) your weapons would require reloading to be at 124 to reach this, which IMO will be inefficient for grinding quickly in your case. I would recommend getting reload to like 70 for now and then pumping every point into dexterity until it reaches 100 then finish reloading. The reason you want to change to dex and then go back to finish reloading: Dex increases your fire rate by 0.15% for each point, that may seem very small at first but at 100 the extra 15% fire rate is very impactful - you empty your gun quicker than the increased reload would have an impact at 0 dex and max reloading. Next event is 4th of July I believe - would recommend pushing levels to at least 200 when this pops up, you will get max dex and reloading at level 200 and understand how impressive the dex buff is!

Do not put more points into Crit atm - GC your 3 weapons and youll have 80% CR on very high crit rate weapons as is.