“I Never Miss” is a GREAT skill to max out. At 11/5 (Blue Foxy Big Game Hunter COM) you’re looking at 7.7% Sniper Crit Damage per stack. These stacks only go away if you miss with a sniper or exit the game - meaning deaths, missing with a different weapon, and traveling to different locations doesn’t hurt you. You don’t even need to hit crits to stack. It’s amazing.
A good way I’ve found of stacking is to use a low level cryo Skorry Droog. (fire rate prefix freezes fast, Vladof grip for mag size and reload speed, low level so you don’t kill your target) For mobbing, it’s best to wait until you’ve got one enemy left that doesn’t move too fast (bigger Kraggons, Shuggaraths, etc) or wait for someone to stand still for a moment and shoot at you. (most common enemies do this, and so do Dahl ships when they’re dropping off soldiers) With a steady trigger finger, you can get up to 130 stacks in a few clips, which totals out to a little over 1000% sniper crit damage. Hold onto that number til you get to a boss, OHKO, then switch to another weapon to hold onto your stacks until you get to the next boss. Plus, as a cryo weapon, if your target happens to freeze, then that just means free stacks. PLUS, if you’ve got a bunch of stacks of Avalanche from a previous engagement, your freeze chance is increased and those stacks don’t decay too fast either.
Just WATCH THE RECOIL! Go for body shots and shoot a little low, you don’t want to look down and see that you have to start over because you missed one shot out of your volley. This method costs a lot of ammo but one-shotting Deadlift in UVHM makes it all worth it lol.
For bossing, I think I’d suggest a shock Bolshy Droog. (more mag size, and still Vladof grip) But any suggestions are welcome!!
PS - Speaking of Droogs, a Skorry corrosive variant will ruin RK5’s life!